Hypofractionated Radiation Therapy or Conventional Radiation Therapy After Surgery in Treating Patients With Prostate Cancer

Sponsor
NRG Oncology (Other)
Overall Status
Active, not recruiting
CT.gov ID
NCT03274687
Collaborator
National Cancer Institute (NCI) (NIH)
296
241
2
111.1
1.2
0

Study Details

Study Description

Brief Summary

This randomized phase III trial studies how well hypofractionated radiation therapy works compared to conventional radiation therapy after surgery in treating patients with prostate cancer. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. Conventional radiation therapy uses high energy x-rays, gamma rays, neutrons, protons, or other sources to kill tumor cells and shrink tumors. It is not yet known whether giving hypofractionated radiation therapy or conventional radiation therapy after surgery may work better in treating patients with prostate cancer.

Condition or Disease Intervention/Treatment Phase
  • Radiation: Hypofractionated radiation therapy
  • Radiation: Conventional radiation therapy
  • Drug: Optional androgen deprivation therapy
Phase 3

Detailed Description

PRIMARY OBJECTIVES:
  1. To demonstrate that hypofractionated post-prostatectomy radiotherapy (HYPORT) does not increase patient-reported gastrointestinal (GI) or genitourinary (GU) symptoms over conventionally fractionated post-prostatectomy (COPORT) at the 2-year time point.
SECONDARY OBJECTIVES:
  1. To compare patient-reported GI symptoms using the Expanded Prostate Cancer Index Composite (EPIC)-26 at end of radiation therapy (RT) and 6, 12, 24, and 60 months from end of treatment.

  2. To compare patient-reported GU symptoms using the EPIC-26 at end of RT and 6, 12, 24, and 60 months from end of treatment.

  3. To compare the cost effectiveness based on the cost of radiotherapy and measured utilities for health outcomes using the EuroQol five dimensions questionnaire (EQ-5D).

  4. To compare time to progression (TTP) where progression is defined as the first occurrence of biochemical failure (BF), local failure, regional failure, distant metastasis (DM), institution of new unplanned anticancer treatment, or death from prostate cancer (prostate cancer specific mortality [PCSM]).

  5. To compare freedom from biochemical failure (FFBF) and TTP rates with an alternate prostate specific antigen (PSA) >= PSA nadir + 2 ng/mL definition of BF.

  6. To compare local failure, regional failure, salvage therapy (i.e. institution of new unplanned anticancer treatment), DM, PCSM, and overall survival (OS) rates.

  7. Assessment of adverse events. VIII. Paraffin-embedded tissue block, serum, plasma, whole blood, and urine for future translational research analyses for predictors of toxicity following hypofractionated or conventionally fractionated post-prostatectomy radiotherapy.

After completion of study treatment, patients are followed up every 6 months for 2 years and every year for 3 years and thereafter.

Study Design

Study Type:
Interventional
Actual Enrollment :
296 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Randomized Phase III Trial of Hypofractionated Post-prostatectomy Radiation Therapy (HYPORT) Versus Conventional Post-prostatectomy Radiation Therapy (COPORT)
Actual Study Start Date :
Jul 28, 2017
Actual Primary Completion Date :
Dec 1, 2020
Anticipated Study Completion Date :
Nov 1, 2026

Arms and Interventions

Arm Intervention/Treatment
Active Comparator: Conventional radiation therapy

Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation.

Radiation: Conventional radiation therapy
62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity.

Drug: Optional androgen deprivation therapy
Any luteinizing hormone-releasing hormone (LHRH) agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
Other Names:
  • ADT
  • Experimental: Hypofractionated radiation therapy

    Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation.

    Radiation: Hypofractionated radiation therapy
    66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity.
    Other Names:
  • Hypofractionated Radiotherapy
  • hypofractionation
  • Drug: Optional androgen deprivation therapy
    Any luteinizing hormone-releasing hormone (LHRH) agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Other Names:
  • ADT
  • Outcome Measures

    Primary Outcome Measures

    1. Change in Urinary Domain of the Expanded Prostate Cancer Index (EPIC) at Two Years [Baseline (randomization), 2 years]

      The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The urinary domain contains 12 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.

    2. Change in Bowel Domain of the Expanded Prostate Cancer Index (EPIC) at Two Years [Baseline, 2 years]

      The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The bowel domain contains 14 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.

    Secondary Outcome Measures

    1. Change in Urinary Domain Score of the Expanded Prostate Cancer Index (EPIC) at End of Radiation Therapy (RT), 6 Months, 1 and 5 Years [Baseline, end of RT, then 6 months,1 and 5 years from the start of RT (5 year time point has not yet been reached). RT dates depend on timing and duration of androgen deprivation therapy (ADT) (optional) and RT.]

      The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The urinary domain contains 12 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.

    2. Change in Bowel Domain Score of the Expanded Prostate Cancer Index (EPIC) at End of RT, 6 Months, 1 and 5 Years [Baseline, end of RT, then 6 months,1 and 5 years from the start of RT (5 year time point has not yet been reached). RT dates depend on timing and duration of ADT (optional) and RT.]

      The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The bowel domain contains 14 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.

    3. Percentage of Participants With Biochemical Failure [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years.]

      Biochemical failure was analyzed using two different definitions. The protocol definition of biochemical failure is a PSA measurement ≥ 0.4 ng/mL and rising (i.e. PSA ≥ 0.4 ng/mL followed by a value higher than the first by any amount) or followed by initiation of salvage hormones. The Phoenix definition of biochemical failure is a PSA measurement ≥ PSA nadir + 2 ng/mL where nadir is the lowest post-RT PSA value. Time to biochemical failure is defined as time from randomization to the date of first biochemical failure, last known follow-up (censored), or death without biochemical failure (competing risk). Biochemical failure rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.

    4. Percentage of Participants With Progression [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Progression (failure) is defined as the first occurrence of biochemical failure, local failure, regional failure, distant failure, institution of new unplanned anticancer treatment, or death from prostate cancer. Time to progression is defined as time from randomization to the date of progression, last known follow-up (censored), or death without progression (competing risk). Progression rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.

    5. Percentage of Participants With Local-Regional Failure [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Local-regional failure is defined as local or regional failure. Local failure is defined as the development of a new biopsy-proven mass in the prostate bed. Regional failure is defined as radiographic evidence (CT or MRI) of lymphadenopathy (lymph node size ≥ 1.0 cm in the short axis) in a patient without the diagnosis of a hematologic/lymphomatous disorder associated with adenopathy. Time to local-regional failure is defined as time from randomization to the date of first local-regional failure, last known follow-up (censored), or death without local-regional (competing risk). Local-regional failure rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.

    6. Percentage of Participants Receiving Salvage Therapy [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Salvage therapy is defined as the initiation of new unplanned anticancer treatment. Time to salvage therapy initiation is defined as time from randomization to the date of first salvage therapy, last known follow-up (censored), or death without salvage therapy (competing risk). Salvage therapy rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of salvage initiation times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.

    7. Percentage of Participants With Distant Metastasis [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Distant metastasis (failure) is defined as radiographic evidence of hematogenous spread evaluated by bone scan, CT, or MRI. Time to distant metastasis is defined as time from randomization to the date of first distant metastasis, last known follow-up (censored), or death without local recurrence (competing risk). Distant metastasis rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.

    8. Percentage of Participants Who Died From Prostate Cancer (Prostate Cancer Specific Mortality) [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Cause of death was centrally reviewed. Count and percentage at time of analysis are reported.

    9. Percent of Participants Alive (Overall Survival) [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Overall survival time is defined as time from registration/randomization to the date of death (failure) from any cause or last known follow-up (censored). Overall survival rates are estimated by the Kaplan-Meier method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. 2-year rates are provided.

    10. Number of Participants With Grade 3+ Adverse Events [From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.]

      Common Terminology Criteria for Adverse Events (CTCAE) version 4 grades adverse event severity from 1=mild to 5=death. Summary data is provided in this outcome measure; see Adverse Events Module for specific adverse event data. Counts of participants with any grade 3 or higher adverse event, any grade 3 or higher gastrointestinal adverse events, and any grade 3 or higher genitourinary adverse events are reported. Adverse events of any attribution are included.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    Male
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • PRIOR TO STEP 1 REGISTRATION

    • Adenocarcinoma of the prostate treated primarily with radical prostatectomy

    • Any type of radical prostatectomy will be permitted, including retropubic, perineal, laparoscopic, or robotically assisted; there is no time limit for the date of radical prostatectomy

    • One of the following pathologic T-classifications: pT2 or pT3

    • Patients with positive surgical margins are eligible

    • One of the following pathologic N-classifications: pN0, pNX

    • If a lymph node dissection is performed, the number of lymph nodes removed per side of the pelvis and the extent of the pelvic lymph node dissection (obturator versus (vs.) extended lymph node dissection) should be noted whenever possible

    • No clinical evidence of regional lymph node metastasis

    • Computed tomography (CT) (with contrast if renal function is acceptable; a noncontrast CT is permitted if the patient is not a candidate for contrast), magnetic resonance imaging (MRI), nodal sampling, or dissection of the pelvis within 120 days prior to step 1 registration

    • Patients with pelvic lymph nodes equivocal or questionable by imaging are eligible if the nodes are =< 1 cm in the short axis

    • A post-radical prostatectomy study entry PSA >= 45 days after prostatectomy and within 30 days prior to step 1, < 2.0 ng/mL

    • No evidence of a local recurrence in the prostate fossa based on a digital rectal examination (DRE) within 60 days prior to step 1 registration

    • Patients with equivocal or questionable DRE findings should have an MRI of the pelvis to exclude the presence of a prostate fossa mass

    • Patients with equivocal or questionable exam findings by DRE or MRI are eligible if a biopsy of the lesion is negative for tumor

    • No evidence of bone metastases (M0) on bone scan (Na F positron emission tomography (PET)/CT is an acceptable substitute) within 120 days prior to step 1 registration

    • Equivocal bone scan findings are allowed if plain films and/or MRI are negative for metastasis

    • Zubrod performance status 0-1 within 60 days prior to step 1 registration

    • The patient or a legally authorized representative must provide study-specific informed consent prior to step 1 registration

    • Willingness and ability to complete the Expanded Prostate Cancer Index Composite (EPIC-26) questionnaire

    • Only English and French-speaking patients are eligible to participate

    • PRIOR TO STEP 2 REGISTRATION

    • The EPIC-26 must be completed in full and entered within 10 business days after step 1 registration; NRG Oncology Statistical and Data Management Center has 3 business days to score the results and send a notification to the site to proceed to step 2 randomization

    Exclusion Criteria:
    • A post-prostatectomy PSA nadir >= 0.2 ng/mL AND Gleason >= 7

    • pT2 with a negative surgical margin and PSA < 0.1 ng/mL

    • Androgen deprivation therapy started prior to prostatectomy for > 6 months (180 days) duration;

    • Note: The use of finasteride or dutasteride (? tamsulosin) for longer periods prior to prostatectomy is acceptable

    • Androgen deprivation therapy started after prostatectomy and prior to step 1 registration for > 6 weeks (42 days)

    • Neoadjuvant chemotherapy before or after prostatectomy

    • Prior invasive (except non-melanoma skin cancer) malignancy unless disease-free for a minimum of 3 years and not in the pelvis; (for example, carcinoma in situ of the oral cavity is permissible if disease free for a minimum of 3 years; however, patients with prior history of bladder cancer are not allowed no matter the disease free duration); prior hematological (e.g., leukemia, lymphoma, myeloma) malignancy is not allowed

    • Previous chemotherapy for any other disease site if given within 3 years prior to step 1

    • Prior radiotherapy, including brachytherapy, to the region of the study cancer that would result in overlap of radiation therapy treatment volumes

    • Severe, active co-morbidity, defined as follows:

    • Unstable angina and/or congestive heart failure requiring hospitalization within the last 6 months

    • Transmural myocardial infarction within the last 6 months

    • Acute bacterial or fungal infection requiring intravenous antibiotics at the time of step 1 registration

    • Chronic obstructive pulmonary disease exacerbation or other respiratory illness requiring hospitalization or precluding study therapy at the time of step 1 registration

    • Severe hepatic disease, defined as a diagnosis of Child-Pugh class B or C hepatic disease

    • Human immunodeficiency virus (HIV) positive with CD4 count < 200 cells/microliter; note that patients who are HIV positive are eligible, provided they are under treatment with highly active antiretroviral therapy (HAART) and have a CD4 count >= 200 cells/microliter within 30 days prior to registration; note also that HIV testing is not required for eligibility for this protocol

    • End-stage renal disease (ie, on dialysis or dialysis has been recommended)

    • Prior allergic reaction to the study drugs involved in this protocol

    • History of inflammatory bowel disease, prior bowel surgeries (or colostomy) for any reason, or prior partial/radical cystectomy for any reason

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 University of Alabama at Birmingham Cancer Center Birmingham Alabama United States 35233
    2 University of South Alabama Mitchell Cancer Institute Mobile Alabama United States 36688
    3 University of Arkansas for Medical Sciences Little Rock Arkansas United States 72205
    4 Marin Cancer Care Inc Greenbrae California United States 94904
    5 Marin General Hospital Greenbrae California United States 94904
    6 Kaiser Permanente Los Angeles Medical Center Los Angeles California United States 90027
    7 Los Angeles County-USC Medical Center Los Angeles California United States 90033
    8 USC / Norris Comprehensive Cancer Center Los Angeles California United States 90033
    9 Cedars Sinai Medical Center Los Angeles California United States 90048
    10 Fremont - Rideout Cancer Center Marysville California United States 95901
    11 Kaiser Permanente Oakland-Broadway Oakland California United States 94611
    12 Stanford Cancer Institute Palo Alto Palo Alto California United States 94304
    13 Pomona Valley Hospital Medical Center Pomona California United States 91767
    14 Kaiser Permanente-Rancho Cordova Cancer Center Rancho Cordova California United States 95670
    15 Rohnert Park Cancer Center Rohnert Park California United States 94928
    16 The Permanente Medical Group-Roseville Radiation Oncology Roseville California United States 95678
    17 University of California Davis Comprehensive Cancer Center Sacramento California United States 95817
    18 South Sacramento Cancer Center Sacramento California United States 95823
    19 Kaiser Permanente Medical Center - Santa Clara Santa Clara California United States 95051
    20 Kaiser Permanente Cancer Treatment Center South San Francisco California United States 94080
    21 Gene Upshaw Memorial Tahoe Forest Cancer Center Truckee California United States 96161
    22 University of Colorado Hospital Aurora Colorado United States 80045
    23 Penrose-Saint Francis Healthcare Colorado Springs Colorado United States 80907
    24 UCHealth Memorial Hospital Central Colorado Springs Colorado United States 80909
    25 Yale University New Haven Connecticut United States 06520
    26 Helen F Graham Cancer Center Newark Delaware United States 19713
    27 Christiana Care Health System-Christiana Hospital Newark Delaware United States 19718
    28 Beebe Health Campus Rehoboth Beach Delaware United States 19971
    29 TidalHealth Nanticoke / Allen Cancer Center Seaford Delaware United States 19973
    30 UM Sylvester Comprehensive Cancer Center at Coral Gables Coral Gables Florida United States 33146
    31 UM Sylvester Comprehensive Cancer Center at Deerfield Beach Deerfield Beach Florida United States 33442
    32 Mayo Clinic in Florida Jacksonville Florida United States 32224-9980
    33 University of Miami Miller School of Medicine-Sylvester Cancer Center Miami Florida United States 33136
    34 Cleveland Clinic-Weston Weston Florida United States 33331
    35 Grady Health System Atlanta Georgia United States 30303
    36 Emory University Hospital Midtown Atlanta Georgia United States 30308
    37 Emory University Hospital/Winship Cancer Institute Atlanta Georgia United States 30322
    38 Emory Saint Joseph's Hospital Atlanta Georgia United States 30342
    39 Lewis Cancer and Research Pavilion at Saint Joseph's/Candler Savannah Georgia United States 31405
    40 The Cancer Center of Hawaii-Pali Momi 'Aiea Hawaii United States 96701
    41 Queen's Medical Center Honolulu Hawaii United States 96813
    42 The Cancer Center of Hawaii-Liliha Honolulu Hawaii United States 96817
    43 SIH Cancer Institute Carterville Illinois United States 62918
    44 University of Chicago Comprehensive Cancer Center Chicago Illinois United States 60637
    45 Decatur Memorial Hospital Decatur Illinois United States 62526
    46 Crossroads Cancer Center Effingham Illinois United States 62401
    47 Loyola University Medical Center Maywood Illinois United States 60153
    48 UC Comprehensive Cancer Center at Silver Cross New Lenox Illinois United States 60451
    49 OSF Saint Francis Radiation Oncology at Peoria Cancer Center Peoria Illinois United States 61615
    50 OSF Saint Francis Medical Center Peoria Illinois United States 61637
    51 SwedishAmerican Regional Cancer Center/ACT Rockford Illinois United States 61114
    52 Carle Cancer Center Urbana Illinois United States 61801
    53 Goshen Center for Cancer Care Goshen Indiana United States 46526
    54 McFarland Clinic PC - Ames Ames Iowa United States 50010
    55 Iowa Methodist Medical Center Des Moines Iowa United States 50309
    56 University of Kansas Cancer Center Kansas City Kansas United States 66160
    57 Olathe Health Cancer Center Olathe Kansas United States 66061
    58 University of Kansas Cancer Center-Overland Park Overland Park Kansas United States 66210
    59 Cotton O'Neil Cancer Center / Stormont Vail Health Topeka Kansas United States 66606
    60 Ascension Via Christi Hospitals Wichita Wichita Kansas United States 67214
    61 Owensboro Health Mitchell Memorial Cancer Center Owensboro Kentucky United States 42303
    62 East Jefferson General Hospital Metairie Louisiana United States 70006
    63 Ochsner Medical Center Jefferson New Orleans Louisiana United States 70121
    64 Maine Medical Center-Bramhall Campus Portland Maine United States 04102
    65 Maine Medical Center- Scarborough Campus Scarborough Maine United States 04074
    66 University of Maryland/Greenebaum Cancer Center Baltimore Maryland United States 21201
    67 Central Maryland Radiation Oncology in Howard County Columbia Maryland United States 21044
    68 University of Maryland Radiation Oncology Center at Union Hospital Elkton Maryland United States 21921
    69 UM Baltimore Washington Medical Center/Tate Cancer Center Glen Burnie Maryland United States 21061
    70 Boston Medical Center Boston Massachusetts United States 02118
    71 Lowell General Hospital Lowell Massachusetts United States 01854
    72 Beth Israel Deaconess Hospital-Plymouth Plymouth Massachusetts United States 02360
    73 Saint Joseph Mercy Hospital Ann Arbor Michigan United States 48106
    74 Henry Ford Cancer Institute-Downriver Brownstown Michigan United States 48183
    75 21st Century Oncology MHP - Clarkston Clarkston Michigan United States 48346
    76 McLaren Cancer Institute-Clarkston Clarkston Michigan United States 48346
    77 Henry Ford Macomb Hospital-Clinton Township Clinton Township Michigan United States 48038
    78 Wayne State University/Karmanos Cancer Institute Detroit Michigan United States 48201
    79 Henry Ford Hospital Detroit Michigan United States 48202
    80 21st Century Oncology MHP - Farmington Farmington Hills Michigan United States 48334
    81 Weisberg Cancer Treatment Center Farmington Hills Michigan United States 48334
    82 Genesys Hurley Cancer Institute Flint Michigan United States 48503
    83 McLaren Cancer Institute-Flint Flint Michigan United States 48532
    84 Mercy Health Saint Mary's Grand Rapids Michigan United States 49503
    85 Spectrum Health at Butterworth Campus Grand Rapids Michigan United States 49503
    86 West Michigan Cancer Center Kalamazoo Michigan United States 49007
    87 McLaren-Greater Lansing Lansing Michigan United States 48910
    88 Sparrow Hospital Lansing Michigan United States 48912
    89 McLaren Cancer Institute-Lapeer Region Lapeer Michigan United States 48446
    90 Saint Mary Mercy Hospital Livonia Michigan United States 48154
    91 McLaren Cancer Institute-Macomb Mount Clemens Michigan United States 48043
    92 McLaren Cancer Institute-Central Michigan Mount Pleasant Michigan United States 48858
    93 McLaren Cancer Institute-Owosso Owosso Michigan United States 48867
    94 McLaren Cancer Institute-Northern Michigan Petoskey Michigan United States 49770
    95 Saint Joseph Mercy Oakland Pontiac Michigan United States 48341
    96 McLaren-Port Huron Port Huron Michigan United States 48060
    97 21st Century Oncology MHP - Troy Troy Michigan United States 48098
    98 Henry Ford West Bloomfield Hospital West Bloomfield Michigan United States 48322
    99 Metro Health Hospital Wyoming Michigan United States 49519
    100 Saint Luke's Hospital of Duluth Duluth Minnesota United States 55805
    101 Mayo Clinic Health Systems-Mankato Mankato Minnesota United States 56001
    102 Mayo Clinic in Rochester Rochester Minnesota United States 55905
    103 Coborn Cancer Center at Saint Cloud Hospital Saint Cloud Minnesota United States 56303
    104 Southeast Cancer Center Cape Girardeau Missouri United States 63703
    105 Siteman Cancer Center at West County Hospital Creve Coeur Missouri United States 63141
    106 North Kansas City Hospital Kansas City Missouri United States 64116
    107 Kansas City Veterans Affairs Medical Center Kansas City Missouri United States 64128
    108 The University of Kansas Cancer Center-South Kansas City Missouri United States 64131
    109 University of Kansas Cancer Center - North Kansas City Missouri United States 64154
    110 University of Kansas Cancer Center - Lee's Summit Lee's Summit Missouri United States 64064
    111 Heartland Regional Medical Center Saint Joseph Missouri United States 64506
    112 Washington University School of Medicine Saint Louis Missouri United States 63110
    113 Siteman Cancer Center-South County Saint Louis Missouri United States 63129
    114 Mercy Hospital Saint Louis Saint Louis Missouri United States 63141
    115 Siteman Cancer Center at Saint Peters Hospital Saint Peters Missouri United States 63376
    116 Billings Clinic Cancer Center Billings Montana United States 59101
    117 Bozeman Deaconess Hospital Bozeman Montana United States 59715
    118 Benefis Healthcare- Sletten Cancer Institute Great Falls Montana United States 59405
    119 Kalispell Regional Medical Center Kalispell Montana United States 59901
    120 Wentworth-Douglass Hospital Dover New Hampshire United States 03820
    121 Dartmouth Hitchcock Medical Center Lebanon New Hampshire United States 03756
    122 University of New Mexico Cancer Center Albuquerque New Mexico United States 87102
    123 Lovelace Radiation Oncology Albuquerque New Mexico United States 87109
    124 New Mexico Oncology Hematology Consultants Albuquerque New Mexico United States 87109
    125 Memorial Medical Center - Las Cruces Las Cruces New Mexico United States 88011
    126 Northwell Health Imbert Cancer Center Bay Shore New York United States 11706
    127 New York-Presbyterian/Brooklyn Methodist Hospital Brooklyn New York United States 11215
    128 Roswell Park Cancer Institute Buffalo New York United States 14263
    129 Mary Imogene Bassett Hospital Cooperstown New York United States 13326
    130 Arnot Ogden Medical Center/Falck Cancer Center Elmira New York United States 14905
    131 Northwell Health/Center for Advanced Medicine Lake Success New York United States 11042
    132 NYP/Weill Cornell Medical Center New York New York United States 10065
    133 Dickstein Cancer Treatment Center White Plains New York United States 10601
    134 UNC Lineberger Comprehensive Cancer Center Chapel Hill North Carolina United States 27599
    135 Novant Health Presbyterian Medical Center Charlotte North Carolina United States 28204
    136 Duke University Medical Center Durham North Carolina United States 27710
    137 Rex Cancer Center Raleigh North Carolina United States 27607
    138 NHRMC Radiation Oncology - Supply Supply North Carolina United States 28462
    139 NHRMC Radiation Oncology - 16th Street Wilmington North Carolina United States 28401
    140 Novant Health Forsyth Medical Center Winston-Salem North Carolina United States 27103
    141 Cleveland Clinic Akron General Akron Ohio United States 44307
    142 UHHS-Chagrin Highlands Medical Center Beachwood Ohio United States 44122
    143 Geauga Hospital Chardon Ohio United States 44024
    144 Adena Regional Medical Center Chillicothe Ohio United States 45601
    145 Case Western Reserve University Cleveland Ohio United States 44106
    146 Cleveland Clinic Cancer Center/Fairview Hospital Cleveland Ohio United States 44111
    147 Cleveland Clinic Foundation Cleveland Ohio United States 44195
    148 Ohio State University Comprehensive Cancer Center Columbus Ohio United States 43210
    149 Mercy Cancer Center-Elyria Elyria Ohio United States 44035
    150 Cleveland Clinic Cancer Center Independence Independence Ohio United States 44131
    151 Cleveland Clinic Cancer Center Mansfield Mansfield Ohio United States 44906
    152 Hillcrest Hospital Cancer Center Mayfield Heights Ohio United States 44124
    153 UH Seidman Cancer Center at Lake Health Mentor Campus Mentor Ohio United States 44060
    154 UH Seidman Cancer Center at Southwest General Hospital Middleburg Heights Ohio United States 44130
    155 University Hospitals Parma Medical Center Parma Ohio United States 44129
    156 North Coast Cancer Care Sandusky Ohio United States 44870
    157 UH Seidman Cancer Center at Firelands Regional Medical Center Sandusky Ohio United States 44870
    158 Cleveland Clinic Cancer Center Strongsville Strongsville Ohio United States 44136
    159 ProMedica Flower Hospital Sylvania Ohio United States 43560
    160 UHHS-Westlake Medical Center Westlake Ohio United States 44145
    161 Cleveland Clinic Wooster Family Health and Surgery Center Wooster Ohio United States 44691
    162 University of Oklahoma Health Sciences Center Oklahoma City Oklahoma United States 73104
    163 Abington Memorial Hospital Abington Pennsylvania United States 19001
    164 Crozer-Keystone Regional Cancer Center at Broomall Broomall Pennsylvania United States 19008
    165 Christiana Care Health System-Concord Health Center Chadds Ford Pennsylvania United States 19317
    166 Geisinger Medical Center Danville Pennsylvania United States 17822
    167 Northeast Radiation Oncology Center Dunmore Pennsylvania United States 18512
    168 Crozer Regional Cancer Center at Brinton Lake Glen Mills Pennsylvania United States 19342
    169 UPMC Pinnacle Cancer Center/Community Osteopathic Campus Harrisburg Pennsylvania United States 17109
    170 Thomas Jefferson University Hospital Philadelphia Pennsylvania United States 19107
    171 Guthrie Medical Group PC-Robert Packer Hospital Sayre Pennsylvania United States 18840
    172 Reading Hospital West Reading Pennsylvania United States 19611
    173 Geisinger Wyoming Valley/Henry Cancer Center Wilkes-Barre Pennsylvania United States 18711
    174 Prisma Health Cancer Institute - Spartanburg Boiling Springs South Carolina United States 29316
    175 Medical University of South Carolina Charleston South Carolina United States 29425
    176 Prisma Health Cancer Institute - Faris Greenville South Carolina United States 29605
    177 Saint Francis Cancer Center Greenville South Carolina United States 29607
    178 Prisma Health Cancer Institute - Eastside Greenville South Carolina United States 29615
    179 Self Regional Healthcare Greenwood South Carolina United States 29646
    180 Gibbs Cancer Center-Pelham Greer South Carolina United States 29651
    181 The Radiation Oncology Center-Hilton Head/Bluffton Hilton Head Island South Carolina United States 29926
    182 Carolina Regional Cancer Center Myrtle Beach South Carolina United States 29577
    183 Prisma Health Cancer Institute - Seneca Seneca South Carolina United States 29672
    184 Spartanburg Medical Center Spartanburg South Carolina United States 29303
    185 Vanderbilt University/Ingram Cancer Center Nashville Tennessee United States 37232
    186 UT Southwestern/Simmons Cancer Center-Dallas Dallas Texas United States 75390
    187 University of Texas Medical Branch Galveston Texas United States 77555-0565
    188 UTMB Cancer Center at Victory Lakes League City Texas United States 77573
    189 American Fork Hospital / Huntsman Intermountain Cancer Center American Fork Utah United States 84003
    190 Farmington Health Center Farmington Utah United States 84025
    191 Logan Regional Hospital Logan Utah United States 84321
    192 Intermountain Medical Center Murray Utah United States 84107
    193 McKay-Dee Hospital Center Ogden Utah United States 84403
    194 Ogden Regional Medical Center Ogden Utah United States 84405
    195 Utah Valley Regional Medical Center Provo Utah United States 84604
    196 Riverton Hospital Riverton Utah United States 84065
    197 Utah Cancer Specialists-Salt Lake City Salt Lake City Utah United States 84106
    198 Huntsman Cancer Institute/University of Utah Salt Lake City Utah United States 84112
    199 LDS Hospital Salt Lake City Utah United States 84143
    200 South Jordan Health Center South Jordan Utah United States 84009
    201 Norris Cotton Cancer Center-North Saint Johnsbury Vermont United States 05819
    202 Augusta Health Center for Cancer and Blood Disorders Fishersville Virginia United States 22939
    203 Naval Medical Center - Portsmouth Portsmouth Virginia United States 23708-2197
    204 Overlake Medical Center Bellevue Washington United States 98004
    205 Ascension Saint Elizabeth Hospital Appleton Wisconsin United States 54915
    206 Ascension Southeast Wisconsin Hospital - Elmbrook Campus Brookfield Wisconsin United States 53045
    207 Mayo Clinic Health System Eau Claire Hospital-Luther Campus Eau Claire Wisconsin United States 54703
    208 Ascension Saint Francis - Reiman Cancer Center Franklin Wisconsin United States 53132
    209 Aurora Cancer Care-Grafton Grafton Wisconsin United States 53024
    210 Aurora BayCare Medical Center Green Bay Wisconsin United States 54311
    211 Aurora Cancer Care-Kenosha South Kenosha Wisconsin United States 53142
    212 Gundersen Lutheran Medical Center La Crosse Wisconsin United States 54601
    213 Mayo Clinic Health System-Franciscan Healthcare La Crosse Wisconsin United States 54601
    214 University of Wisconsin Hospital and Clinics Madison Wisconsin United States 53792
    215 Aurora Bay Area Medical Group-Marinette Marinette Wisconsin United States 54143
    216 Froedtert Menomonee Falls Hospital Menomonee Falls Wisconsin United States 53051
    217 Aurora Saint Luke's Medical Center Milwaukee Wisconsin United States 53215
    218 Medical College of Wisconsin Milwaukee Wisconsin United States 53226
    219 Aurora Sinai Medical Center Milwaukee Wisconsin United States 53233
    220 Zablocki Veterans Administration Medical Center Milwaukee Wisconsin United States 53295
    221 Ascension Mercy Hospital Oshkosh Wisconsin United States 54904
    222 Vince Lombardi Cancer Clinic - Oshkosh Oshkosh Wisconsin United States 54904
    223 Ascension All Saints Hospital Racine Wisconsin United States 53405
    224 Vince Lombardi Cancer Clinic-Sheboygan Sheboygan Wisconsin United States 53081
    225 Aurora Medical Center in Summit Summit Wisconsin United States 53066
    226 Vince Lombardi Cancer Clinic-Two Rivers Two Rivers Wisconsin United States 54241
    227 Aurora West Allis Medical Center West Allis Wisconsin United States 53227
    228 Froedtert West Bend Hospital/Kraemer Cancer Center West Bend Wisconsin United States 53095
    229 Aspirus Cancer Care - Wisconsin Rapids Wisconsin Rapids Wisconsin United States 54494
    230 Tom Baker Cancer Centre Calgary Alberta Canada T2N 4N2
    231 Juravinski Cancer Centre at Hamilton Health Sciences Hamilton Ontario Canada L8V 5C2
    232 London Regional Cancer Program London Ontario Canada N6A 4L6
    233 Centre De Sante Et De Services Sociaux De Chicoutimi Chicoutimi Quebec Canada G7H 5H6
    234 CIUSSSEMTL-Hopital Maisonneuve-Rosemont Montreal Quebec Canada H1T 2M4
    235 CHUM - Centre Hospitalier de l'Universite de Montreal Montreal Quebec Canada H2X 3E4
    236 The Research Institute of the McGill University Health Centre (MUHC) Montreal Quebec Canada H3H 2R9
    237 CHU de Quebec-L'Hotel-Dieu de Quebec (HDQ) Quebec City Quebec Canada G1R 2J6
    238 Centre Hospitalier Universitaire de Sherbrooke-Fleurimont Sherbrooke Quebec Canada J1H 5N4
    239 Allan Blair Cancer Centre Regina Saskatchewan Canada S4T 7T1
    240 Saskatoon Cancer Centre Saskatoon Saskatchewan Canada S7N 4H4
    241 Kantonsspital Aarau Aarau Switzerland 5001

    Sponsors and Collaborators

    • NRG Oncology
    • National Cancer Institute (NCI)

    Investigators

    • Principal Investigator: Mark Buyyounouski, NRG Oncology

    Study Documents (Full-Text)

    More Information

    Publications

    None provided.
    Responsible Party:
    NRG Oncology
    ClinicalTrials.gov Identifier:
    NCT03274687
    Other Study ID Numbers:
    • NRG-GU003
    • NCI-2016-01771
    • NRG-GU003
    • NRG-GU003
    • NRG-GU003
    • U10CA180868
    First Posted:
    Sep 7, 2017
    Last Update Posted:
    Jun 28, 2022
    Last Verified:
    May 1, 2022
    Studies a U.S. FDA-regulated Drug Product:
    No
    Studies a U.S. FDA-regulated Device Product:
    No
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details
    Pre-assignment Detail Of 298 screened, 296 participants were randomized.
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy (ADT): Any luteinizing hormone-releasing hormone (LHRH) agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Period Title: Overall Study
    STARTED 152 144
    Eligible 151 143
    Eligible With Adverse Event Data 148 141
    COMPLETED 151 143
    NOT COMPLETED 1 1

    Baseline Characteristics

    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy Total
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Total of all reporting groups
    Overall Participants 151 143 294
    Age, Customized (Count of Participants)
    ≤ 49 years
    3
    2%
    2
    1.4%
    5
    1.7%
    50 - 59 years
    27
    17.9%
    31
    21.7%
    58
    19.7%
    60 - 69 years
    74
    49%
    83
    58%
    157
    53.4%
    ≥ 70 years
    47
    31.1%
    27
    18.9%
    74
    25.2%
    Sex: Female, Male (Count of Participants)
    Female
    0
    0%
    0
    0%
    0
    0%
    Male
    151
    100%
    143
    100%
    294
    100%
    Ethnicity (NIH/OMB) (Count of Participants)
    Hispanic or Latino
    7
    4.6%
    5
    3.5%
    12
    4.1%
    Not Hispanic or Latino
    142
    94%
    136
    95.1%
    278
    94.6%
    Unknown or Not Reported
    2
    1.3%
    2
    1.4%
    4
    1.4%
    Race (NIH/OMB) (Count of Participants)
    American Indian or Alaska Native
    0
    0%
    0
    0%
    0
    0%
    Asian
    2
    1.3%
    5
    3.5%
    7
    2.4%
    Native Hawaiian or Other Pacific Islander
    0
    0%
    0
    0%
    0
    0%
    Black or African American
    22
    14.6%
    21
    14.7%
    43
    14.6%
    White
    125
    82.8%
    114
    79.7%
    239
    81.3%
    More than one race
    0
    0%
    0
    0%
    0
    0%
    Unknown or Not Reported
    2
    1.3%
    3
    2.1%
    5
    1.7%
    EPIC Group (Count of Participants)
    A Score Group (bowel domain score > 96, urinary domain score > 84)
    56
    37.1%
    52
    36.4%
    108
    36.7%
    B Score Group (bowel domain score > 96, urinary domain score ≤ 84)
    29
    19.2%
    32
    22.4%
    61
    20.7%
    C Score Group (bowel domain score ≤ 96, urinary domain score > 84)
    31
    20.5%
    31
    21.7%
    62
    21.1%
    D Score Group (bowel domain score ≤ 96, urinary domain score ≤ 84)
    35
    23.2%
    28
    19.6%
    63
    21.4%
    Prior androgen deprivation therapy (ADT) (Count of Participants)
    No
    118
    78.1%
    110
    76.9%
    228
    77.6%
    Yes
    33
    21.9%
    33
    23.1%
    66
    22.4%
    Prostate-specific antigen (PSA) ng/mL (Count of Participants)
    0.0 - 0.5
    135
    89.4%
    128
    89.5%
    263
    89.5%
    0.6 - 1.0
    10
    6.6%
    14
    9.8%
    24
    8.2%
    1.1 - 1.5
    3
    2%
    1
    0.7%
    4
    1.4%
    1.6 - 2.0
    3
    2%
    0
    0%
    3
    1%
    Gleason score (Count of Participants)
    6
    16
    10.6%
    7
    4.9%
    23
    7.8%
    7
    105
    69.5%
    109
    76.2%
    214
    72.8%
    8
    14
    9.3%
    15
    10.5%
    29
    9.9%
    9
    15
    9.9%
    11
    7.7%
    26
    8.8%
    10
    1
    0.7%
    1
    0.7%
    2
    0.7%
    T-Stage (Count of Participants)
    T2
    76
    50.3%
    60
    42%
    136
    46.3%
    T3
    75
    49.7%
    83
    58%
    158
    53.7%
    N-Stage (Count of Participants)
    NX
    30
    19.9%
    33
    23.1%
    63
    21.4%
    N0
    121
    80.1%
    110
    76.9%
    231
    78.6%
    Zubrod (Count of Participants)
    0
    128
    84.8%
    127
    88.8%
    255
    86.7%
    1
    23
    15.2%
    16
    11.2%
    39
    13.3%

    Outcome Measures

    1. Primary Outcome
    Title Change in Urinary Domain of the Expanded Prostate Cancer Index (EPIC) at Two Years
    Description The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The urinary domain contains 12 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.
    Time Frame Baseline (randomization), 2 years

    Outcome Measure Data

    Analysis Population Description
    Eligible participants with baseline and two-year data
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 127 117
    Mean (Standard Deviation) [units on a scale]
    -4.12
    (14.72)
    -5.06
    (15.16)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Null hypothesis (H0): mean change score of HYPORT (∆2) is worse than that of COPORT (∆1), specifically ∆2 - ∆1 < -5. Alternative hypothesis (HA): ∆2 is not worse than ∆1, specifically ∆2 - ∆1 ≥ -5. The study sample size is based on 90% power for this endpoint and 91% power for the bowel endpoint (resulting in 81.9% statistical power to reject the null hypothesis for both endpoints) and a one-sided alpha=0.025 with an overall type I error of 0.05 with a Bonferroni adjustment.
    Type of Statistical Test Non-Inferiority
    Comments The non-inferiority margin for the difference in mean change score (∆2 - ∆1) is -5.
    Statistical Test of Hypothesis p-Value 0.98
    Comments
    Method t-test, 1 sided
    Comments
    2. Primary Outcome
    Title Change in Bowel Domain of the Expanded Prostate Cancer Index (EPIC) at Two Years
    Description The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The bowel domain contains 14 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.
    Time Frame Baseline, 2 years

    Outcome Measure Data

    Analysis Population Description
    Eligible participants with baseline and two-year data
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 127 117
    Mean (Standard Error) [units on a scale]
    -1.42
    (8.35)
    -4.21
    (11.0)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Null hypothesis (H0): mean change score of HYPORT (∆2) is worse than that of COPORT (∆1), specifically ∆2 - ∆1 < -5. Alternative hypothesis (HA): ∆2 is not worse than ∆1, specifically ∆2 - ∆1 ≥ -5. The study sample size is based on 91% power for this endpoint and 90% power for the urinary endpoint (resulting in 81.9% statistical power to reject the null hypothesis for both endpoints) and a one-sided alpha=0.025 with an overall type I error of 0.05 with a Bonferroni adjustment.
    Type of Statistical Test Non-Inferiority
    Comments The non-inferiority margin for the difference in mean change score (∆2 - ∆1) is -6.
    Statistical Test of Hypothesis p-Value 0.96
    Comments
    Method t-test, 1 sided
    Comments
    3. Secondary Outcome
    Title Change in Urinary Domain Score of the Expanded Prostate Cancer Index (EPIC) at End of Radiation Therapy (RT), 6 Months, 1 and 5 Years
    Description The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The urinary domain contains 12 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.
    Time Frame Baseline, end of RT, then 6 months,1 and 5 years from the start of RT (5 year time point has not yet been reached). RT dates depend on timing and duration of androgen deprivation therapy (ADT) (optional) and RT.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants with baseline data
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    End of RT
    -4.34
    (22.61)
    -7.90
    (20.93)
    6 months
    0.08
    (20.26)
    -1.71
    (18.55)
    1 year
    -2.32
    (22.63)
    -5.41
    (21.15)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments End of RT
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.70
    Comments
    Method t-test, 2 sided
    Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments 6 months
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.67
    Comments
    Method t-test, 2 sided
    Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments 1 year
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.66
    Comments
    Method t-test, 2 sided
    Comments
    4. Secondary Outcome
    Title Change in Bowel Domain Score of the Expanded Prostate Cancer Index (EPIC) at End of RT, 6 Months, 1 and 5 Years
    Description The EPIC is a prostate cancer health-related quality of life (HRQOL) self-administered instrument measuring patient-reported urinary, bowel, sexual, and hormonal symptoms related to prostate cancer treatments. Response options for each item form a Likert scale with scores transformed linearly to a 0-100 scale. Domain scores are also on a 0-100 scale with higher scores representing better HRQOL. The bowel domain contains 14 items. Change from baseline is calculated by subtracting baseline from later score, with a positive change score indicating increased HRQOL.
    Time Frame Baseline, end of RT, then 6 months,1 and 5 years from the start of RT (5 year time point has not yet been reached). RT dates depend on timing and duration of ADT (optional) and RT.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants with baseline data
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    End of RT
    -6.83
    (15.82)
    -14.96
    (21.32)
    6 months
    -1.90
    (13.63)
    -2.70
    (13.98)
    1 year
    -2.67
    (12.65)
    -3.11
    (13.93)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments End of RT
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0011
    Comments
    Method t-test, 2 sided
    Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments 6 months
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.93
    Comments
    Method t-test, 2 sided
    Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments 1 year
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.30
    Comments
    Method t-test, 2 sided
    Comments
    5. Secondary Outcome
    Title Percentage of Participants With Biochemical Failure
    Description Biochemical failure was analyzed using two different definitions. The protocol definition of biochemical failure is a PSA measurement ≥ 0.4 ng/mL and rising (i.e. PSA ≥ 0.4 ng/mL followed by a value higher than the first by any amount) or followed by initiation of salvage hormones. The Phoenix definition of biochemical failure is a PSA measurement ≥ PSA nadir + 2 ng/mL where nadir is the lowest post-RT PSA value. Time to biochemical failure is defined as time from randomization to the date of first biochemical failure, last known follow-up (censored), or death without biochemical failure (competing risk). Biochemical failure rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Protocol definition
    8.3
    5.5%
    11.8
    8.3%
    Phoenix definition
    3.5
    2.3%
    8.0
    5.6%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Protocol definition of biochemical failure
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.29
    Comments
    Method Gray's test
    Comments Two-sided significance level 0.05
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Phoenix definition of biochemical failure
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.22
    Comments
    Method Gray's test
    Comments Two-sided significance level 0.05
    6. Secondary Outcome
    Title Percentage of Participants With Progression
    Description Progression (failure) is defined as the first occurrence of biochemical failure, local failure, regional failure, distant failure, institution of new unplanned anticancer treatment, or death from prostate cancer. Time to progression is defined as time from randomization to the date of progression, last known follow-up (censored), or death without progression (competing risk). Progression rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Number (95% Confidence Interval) [percentage of participants]
    14.4
    9.5%
    14.7
    10.3%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.96
    Comments Two-sided significance level 0.05
    Method Gray's test
    Comments
    7. Secondary Outcome
    Title Percentage of Participants With Local-Regional Failure
    Description Local-regional failure is defined as local or regional failure. Local failure is defined as the development of a new biopsy-proven mass in the prostate bed. Regional failure is defined as radiographic evidence (CT or MRI) of lymphadenopathy (lymph node size ≥ 1.0 cm in the short axis) in a patient without the diagnosis of a hematologic/lymphomatous disorder associated with adenopathy. Time to local-regional failure is defined as time from randomization to the date of first local-regional failure, last known follow-up (censored), or death without local-regional (competing risk). Local-regional failure rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Number (95% Confidence Interval) [percentage of participants]
    0.7
    0.5%
    0.8
    0.6%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.35
    Comments Two-sided significance level 0.05
    Method Gray's test
    Comments
    8. Secondary Outcome
    Title Percentage of Participants Receiving Salvage Therapy
    Description Salvage therapy is defined as the initiation of new unplanned anticancer treatment. Time to salvage therapy initiation is defined as time from randomization to the date of first salvage therapy, last known follow-up (censored), or death without salvage therapy (competing risk). Salvage therapy rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of salvage initiation times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Number (95% Confidence Interval) [percentage of participants]
    7.5
    5%
    5.8
    4.1%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.41
    Comments Two-sided significance level 0.05
    Method Gray's test
    Comments
    9. Secondary Outcome
    Title Percentage of Participants With Distant Metastasis
    Description Distant metastasis (failure) is defined as radiographic evidence of hematogenous spread evaluated by bone scan, CT, or MRI. Time to distant metastasis is defined as time from randomization to the date of first distant metastasis, last known follow-up (censored), or death without local recurrence (competing risk). Distant metastasis rates are estimated using the cumulative incidence method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. Two-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Number (95% Confidence Interval) [percentage of participants]
    0.7
    0.5%
    2.2
    1.5%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.60
    Comments Two-sided significance level 0.05
    Method Gray's test
    Comments
    10. Secondary Outcome
    Title Percentage of Participants Who Died From Prostate Cancer (Prostate Cancer Specific Mortality)
    Description Cause of death was centrally reviewed. Count and percentage at time of analysis are reported.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Count of Participants [Participants]
    0
    0%
    0
    0%
    11. Secondary Outcome
    Title Percent of Participants Alive (Overall Survival)
    Description Overall survival time is defined as time from registration/randomization to the date of death (failure) from any cause or last known follow-up (censored). Overall survival rates are estimated by the Kaplan-Meier method. The protocol specifies that the distributions of failure times be compared between the arms, which is reported in the statistical analysis results. 2-year rates are provided.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Two-year rates reported here. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible participants
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 151 143
    Number (95% Confidence Interval) [percentage of participants]
    98.6
    65.3%
    98.5
    68.9%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.61
    Comments Two-side significance level 0.05
    Method Log Rank
    Comments
    Method of Estimation Estimation Parameter Hazard Ratio (HR)
    Estimated Value 1.58
    Confidence Interval (2-Sided) 95%
    0.26 to 9.47
    Parameter Dispersion Type:
    Value:
    Estimation Comments Reference = COPORT
    12. Secondary Outcome
    Title Number of Participants With Grade 3+ Adverse Events
    Description Common Terminology Criteria for Adverse Events (CTCAE) version 4 grades adverse event severity from 1=mild to 5=death. Summary data is provided in this outcome measure; see Adverse Events Module for specific adverse event data. Counts of participants with any grade 3 or higher adverse event, any grade 3 or higher gastrointestinal adverse events, and any grade 3 or higher genitourinary adverse events are reported. Adverse events of any attribution are included.
    Time Frame From randomization to last follow-up. Maximum follow-up at time of analysis was 3.0 years. Follow-up schedule: end of RT, then 6, 12, 18, 24 months from start of RT, then yearly.

    Outcome Measure Data

    Analysis Population Description
    Eligible with adverse event data
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    Measure Participants 148 141
    All adverse events
    25
    16.6%
    20
    14%
    Gastrointestinal Adverse Events
    3
    2%
    2
    1.4%
    Genitourinary Adverse Events
    6
    4%
    10
    7%
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Patients with any grade 3 or higher adverse event of any attribution
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.53
    Comments
    Method Chi-squared
    Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Patients with any grade 3 or higher gastrointestinal adverse event of any attribution
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.6929
    Comments
    Method Chi-squared
    Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Conventional Radiation Therapy, Hypofractionated Radiation Therapy
    Comments Patients with any grade 3 or higher genitourinary adverse event of any attribution
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.2605
    Comments
    Method Chi-squared
    Comments

    Adverse Events

    Time Frame Adverse events were to be evaluated at end of RT, then every 6 months from start of RT for two years, then yearly. RT dates depends on timing and duration of ADT (optional) and RT. Maximum follow-up at time of of analysis was 3.0 years.
    Adverse Event Reporting Description All-cause mortality was assessed in eligible participants. Adverse events were assessed in eligible participants with adverse event data.
    Arm/Group Title Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Arm/Group Description Conventional post-prostatectomy radiation therapy (COPORT) over 7 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Conventional radiation therapy: 62.5 Gy in 25 daily fractions of 2.5 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed. Hypofractionated post-prostatectomy radiation therapy (HYPORT) over 5 weeks. Patients may also receive optional androgen deprivation therapy per doctor recommendation. Hypofractionated radiation therapy: 66.6 Gy in 37 daily fractions of 1.8 Gy to the prostate bed in the absence of disease progression or unacceptable toxicity. Optional androgen deprivation therapy: Any LHRH agonist/antagonist with or without an oral antiandrogen can be used up to a six-month administration dose, starting 7-9 weeks before radiation therapy and may begin as early as 42 days prior to or any time after screening. An oral antiandrogen alone is not allowed.
    All Cause Mortality
    Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/151 (0%) 0/143 (0%)
    Serious Adverse Events
    Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 1/148 (0.7%) 8/141 (5.7%)
    Cardiac disorders
    Myocardial infarction 0/148 (0%) 1/141 (0.7%)
    Gastrointestinal disorders
    Proctitis 0/148 (0%) 1/141 (0.7%)
    Immune system disorders
    Anaphylaxis 0/148 (0%) 1/141 (0.7%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Treatment related secondary malignancy 0/148 (0%) 1/141 (0.7%)
    Renal and urinary disorders
    Cystitis noninfective 0/148 (0%) 3/141 (2.1%)
    Hematuria 0/148 (0%) 1/141 (0.7%)
    Renal and urinary disorders - Other 0/148 (0%) 1/141 (0.7%)
    Renal calculi 1/148 (0.7%) 1/141 (0.7%)
    Urinary retention 0/148 (0%) 1/141 (0.7%)
    Reproductive system and breast disorders
    Pelvic pain 0/148 (0%) 1/141 (0.7%)
    Other (Not Including Serious) Adverse Events
    Conventional Radiation Therapy Hypofractionated Radiation Therapy
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 130/148 (87.8%) 120/141 (85.1%)
    Gastrointestinal disorders
    Abdominal pain 8/148 (5.4%) 5/141 (3.5%)
    Constipation 17/148 (11.5%) 17/141 (12.1%)
    Diarrhea 43/148 (29.1%) 53/141 (37.6%)
    Gastrointestinal disorders - Other 13/148 (8.8%) 17/141 (12.1%)
    Proctitis 8/148 (5.4%) 18/141 (12.8%)
    Rectal hemorrhage 6/148 (4.1%) 18/141 (12.8%)
    General disorders
    Fatigue 80/148 (54.1%) 62/141 (44%)
    Infections and infestations
    Urinary tract infection 8/148 (5.4%) 2/141 (1.4%)
    Musculoskeletal and connective tissue disorders
    Back pain 8/148 (5.4%) 7/141 (5%)
    Renal and urinary disorders
    Cystitis noninfective 12/148 (8.1%) 10/141 (7.1%)
    Hematuria 9/148 (6.1%) 20/141 (14.2%)
    Renal and urinary disorders - Other 36/148 (24.3%) 22/141 (15.6%)
    Urinary frequency 75/148 (50.7%) 73/141 (51.8%)
    Urinary incontinence 45/148 (30.4%) 48/141 (34%)
    Urinary retention 14/148 (9.5%) 9/141 (6.4%)
    Urinary tract pain 11/148 (7.4%) 15/141 (10.6%)
    Urinary urgency 43/148 (29.1%) 45/141 (31.9%)
    Reproductive system and breast disorders
    Erectile dysfunction 24/148 (16.2%) 18/141 (12.8%)
    Vascular disorders
    Hot flashes 37/148 (25%) 32/141 (22.7%)
    Hypertension 8/148 (5.4%) 11/141 (7.8%)

    Limitations/Caveats

    Local and regional failure data was collected as a combined event (local-regional progression) and therefore is reported as a single outcome measure.

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    PI's are required to abide by the sponsor's publication guidelines which require review by coauthors and subsequent review and approval by the sponsor.

    Results Point of Contact

    Name/Title Wendy Seiferheld
    Organization NRG Oncology
    Phone 215-574-3208
    Email seiferheldw@nrgoncology.org
    Responsible Party:
    NRG Oncology
    ClinicalTrials.gov Identifier:
    NCT03274687
    Other Study ID Numbers:
    • NRG-GU003
    • NCI-2016-01771
    • NRG-GU003
    • NRG-GU003
    • NRG-GU003
    • U10CA180868
    First Posted:
    Sep 7, 2017
    Last Update Posted:
    Jun 28, 2022
    Last Verified:
    May 1, 2022