Study of Pembrolizumab (MK-3475) Plus Docetaxel Versus Placebo Plus Docetaxel in Chemotherapy-naïve Metastatic Castration-resistant Prostate Cancer (mCRPC) (MK-3475-921/KEYNOTE-921)

Sponsor
Merck Sharp & Dohme LLC (Industry)
Overall Status
Active, not recruiting
CT.gov ID
NCT03834506
Collaborator
(none)
1,090
215
2
45.9
5.1
0.1

Study Details

Study Description

Brief Summary

The purpose of this study is to assess the efficacy and safety of the combination of pembrolizumab (MK-3475) and docetaxel in the treatment of men with metastatic castration-resistant prostate cancer (mCRPC) who have not received chemotherapy for mCRPC but have progressed on or are intolerant to Next Generation Hormonal Agent (NHA).

There are two primary study hypotheses.

Hypothesis 1: The combination of pembrolizumab plus docetaxel plus prednisone is superior to placebo plus docetaxel plus prednisone with respect to Overall Survival (OS).

Hypothesis 2: The combination of pembrolizumab plus docetaxel plus prednisone is superior to placebo plus docetaxel plus prednisone with respect to Radiographic Progression-free Survival (rPFS) per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as assessed by blinded independent central review.

Condition or Disease Intervention/Treatment Phase
Phase 3

Study Design

Study Type:
Interventional
Actual Enrollment :
1090 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
A Phase 3, Randomized, Double-blind Study of Pembrolizumab (MK-3475) Plus Docetaxel Plus Prednisone Versus Placebo Plus Docetaxel Plus Prednisone in Participants With Chemotherapy-naïve Metastatic Castration-Resistant Prostate Cancer (mCRPC) Who Have Progressed on a Next Generation Hormonal Agent (NHA) (KEYNOTE-921)
Actual Study Start Date :
May 2, 2019
Actual Primary Completion Date :
Aug 3, 2022
Anticipated Study Completion Date :
Feb 28, 2023

Arms and Interventions

Arm Intervention/Treatment
Experimental: Pembrolizumab+Docetaxel

On Day 1 of each 21-day cycle, participants receive dexamethasone 8 mg by oral tablets at 12 hours, 3 hours and 1 hour prior to docetaxel administration PLUS docetaxel 75 mg/m^2 by intravenous (IV) infusion for up to a maximum of 10 cycles (approximately 7 months). Participants receive prednisone 5 mg by oral tablets twice daily during each docetaxel cycle up to a maximum of 10 cycles (approximately 7 months). Participants also receive pembrolizumab 200 mg by IV infusion on day 1 of each 21-day cycle for up to a maximum of 35 cycles (approximately 2 years).

Biological: Pembrolizumab
IV infusion
Other Names:
  • MK-3475
  • KEYTRUDA®
  • Drug: Docetaxel
    IV infusion
    Other Names:
  • TAXOTERE®
  • Drug: Prednisone
    Oral tablets

    Drug: Dexamethasone
    Oral tablets
    Other Names:
  • DECADRON®
  • Placebo Comparator: Placebo+Docetaxel

    On Day 1 of each 21-day cycle, participants receive dexamethasone 8 mg by oral tablets at 12 hours, 3 hours and 1 hour prior to docetaxel administration PLUS docetaxel 75 mg/m^2 by IV infusion for up to a maximum of 10 cycles (approximately 7 months). Participants receive prednisone 5 mg by oral tablets twice daily during each docetaxel cycle up to a maximum of 10 cycles (approximately 7 months). Participants also receive placebo by IV infusion on day 1 of each 21-day cycle for up to a maximum of 35 cycles (approximately 2 years).

    Drug: Docetaxel
    IV infusion
    Other Names:
  • TAXOTERE®
  • Drug: Prednisone
    Oral tablets

    Drug: Placebo
    IV infusion
    Other Names:
  • Normal saline or dextrose infusion
  • Drug: Dexamethasone
    Oral tablets
    Other Names:
  • DECADRON®
  • Outcome Measures

    Primary Outcome Measures

    1. Overall Survival (OS) [Up to approximately 28 months]

      Time from randomization to death due to any cause

    2. Radiographic Progression-free Survival (rPFS) Per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review [Up to approximately 28 months]

      Time from randomization to radiographic progression, or death due to any cause, whichever occurs first

    Secondary Outcome Measures

    1. Time to Initiation of the First Subsequent Anti-cancer Therapy (TFST) [Up to approximately 28 months]

      Time from randomization to initiation of the first subsequent anti-cancer therapy or death, whichever occurs first

    2. Prostate-specific Antigen (PSA) Response Rate [Up to approximately 28 months]

      Percentage of participants in the analysis population who have a negative change (decrease) in PSA level of ≥50% measured twice ≥3 weeks apart

    3. Objective Response Rate (ORR) Per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review [Up to approximately 28 months]

      Percentage of participants in the analysis population who have a best overall response of either confirmed Complete Response (CR) or a confirmed Partial Response (PR) per PCWG-modified RECIST 1.1

    4. Duration of Response (DOR) Per Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review [Up to approximately 28 months]

      Time from first documented evidence of confirmed Complete Response (CR) or Partial Response (PR) per PCWG-modified RECIST 1.1 until disease progression or death from any cause, whichever occurs first

    5. Time to Pain Progression (TTPP) as Assessed by Brief Pain Inventory-Short Form (BPI-SF) Item 3 ("Worst Pain in 24 Hours") and Opiate Analgesic Use (Analgesic Quantification Algorithm [AQA] Score) [Up to approximately 28 months]

      Time from randomization to pain progression. In this study, pain progression will be assessed by participant responses to Item 3 of the BPI-SF and participant AQA Scores which are both assessed by participants daily for 7 consecutive days

    6. Time to First Symptomatic Skeletal-related Event (SSRE) [Up to approximately 28 months]

      Time from randomization to the first SSRE. SSRE is defined as radiation to prevent or relieve skeletal symptoms, occurrence of new symptomatic pathological fracture, spinal cord compression, or surgery to bone

    7. Time to Prostate-specific Antigen (PSA) Progression [Up to approximately 28 months]

      Time from randomization to PSA progression. PSA progression date is defined as the date of 1) ≥25% increase and ≥2 ng/mL above the nadir, confirmed by a second value ≥3 weeks later if there is PSA decline from baseline, or 2) ≥25% increase and ≥2 ng/mL increase from baseline beyond 12 weeks if there is no PSA decline from baseline

    8. Time to Radiographic Soft Tissue Progression Per Soft Tissue Rules of Prostate Cancer Working Group (PCWG)-modified Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as Assessed by Blinded Independent Central Review [Up to approximately 28 months]

      Time from randomization to radiographic soft tissue progression per PCWG-modified RECIST 1.1

    9. Number of Participants Who Experience an Adverse Event (AE) [Up to approximately 28 months]

      An AE is defined as any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment

    10. Number of Participants Who Discontinue Study Treatment Due to an Adverse Event (AE) [Up to approximately 28 months]

      The number of participants who discontinue study treatment due to an AE will be presented

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    Male
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Has histologically- or cytologically-confirmed adenocarcinoma of the prostate without small cell histology

    • Has prostate cancer progression while on androgen deprivation therapy (or post bilateral orchiectomy) within 6 months prior to screening

    • Has current evidence of metastatic disease documented by either bone lesions on bone scan and/or soft tissue disease by computed tomography/magnetic resonance imaging (CT/MRI)

    • Has received prior treatment with one (but not more than one) NHA (eg, abiraterone acetate, enzalutamide, apalutamide, or darolutamide) for metastatic hormone-sensitive prostate cancer (mHSPC) or castration-resistant prostate cancer (CRPC) and either a) progressed through treatment OR b) has become intolerant of the drug

    • Has ongoing androgen deprivation with serum testosterone <50 ng/dL (<2.0 nM)

    • Participants receiving bone resorptive therapy (including, but not limited to, bisphosphonate or denosumab) must have been on stable doses prior to randomization

    • Participants must agree to the following during the study treatment period and for at least 120 days after the last dose of pembrolizumab or for at least 180 days after the last dose of docetaxel (whichever is longer): Refrain from donating sperm PLUS Use contraception unless confirmed to be azoospermic (vasectomized or secondary to medical cause)

    • Participants must agree to use male condom when engaging in any activity that allows for passage of ejaculate to another person of any sex

    • Has provided newly obtained core or excisional biopsy (obtained within 12 months of screening) from soft tissue not previously irradiated (samples from tumors progressing in a prior site of radiation are allowed). Participants with bone only or bone predominant disease may provide a bone biopsy sample

    • Has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 assessed within 7 days of randomization

    Exclusion Criteria:
    • Has a known additional malignancy that is progressing or has required active treatment in the last 3 years

    • Has an active autoimmune disease that has required systemic treatment in past 2 years

    • Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy

    • Has undergone major surgery including local prostate intervention (excluding prostate biopsy) within 28 days prior to randomization and not recovered adequately from the toxicities and/or complications

    • Has a gastrointestinal disorder affecting absorption or is unable to swallow tablets/capsules

    • Has an active infection (including tuberculosis) requiring systemic therapy

    • Has a history of (non-infectious) pneumonitis that required steroids or current pneumonitis

    • Has known active human immunodeficiency virus (HIV), hepatitis B virus (HBV) or hepatitis C virus (HCV) infection

    • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis

    • Has severe hypersensitivity (≥Grade 3) to pembrolizumab and/or any of its excipients

    • Has symptomatic congestive heart failure (New York Heart Association Class III or IV heart disease)

    • Has had a prior anti-cancer monoclonal antibody (mAb) prior to randomization or who has not recovered (i.e., Grade ≤1 or at baseline) from AEs due to mAbs

    • Has used herbal products that may have hormonal anti-prostate cancer activity and/or are known to decrease PSA levels (e.g. saw palmetto) prior to randomization

    • Has received prior treatment with radium or other therapeutic radiopharmaceuticals for prostate cancer

    • Has received prior therapy with an anti-programmed cell death-1 (anti-PD-1), anti-programmed cell death-ligand 1 (anti-PD-L1), or anti PD-L2 agent or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (e.g., cytotoxic T-lymphocyte-associated protein 4 [CTLA-4], OX-40, CD137)

    • Has received prior treatment with docetaxel or another chemotherapy agent for mCRPC

    • Has hypersensitivity to docetaxel or polysorbate 80

    • Is currently receiving either strong or moderate inhibitors of cytochrome P450 (CYP)3A4 that cannot be discontinued for the duration of the study

    • Has received prior targeted small molecule therapy or abiraterone acetate, enzalutamide, apalutamide, or darolutamide within 4 weeks prior to the first dose of study treatment, or has not recovered (i.e., Grade ≤1 or at baseline) from AEs due to a previously administered agent

    • Has received prior radiotherapy to within 2 weeks of start of study treatment. Participants must have recovered from all radiation-related toxicities, not require corticosteroids, and not have had radiation pneumonitis

    • Has received a live vaccine within 30 days prior to randomization

    • Has received treatment with 5α reductase inhibitors (eg, finasteride or dutasteride), estrogens, and/or cyproterone within 4 weeks prior to randomization

    • Has received prior treatment with ketoconazole for prostate cancer

    • Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks prior to the first dose of study treatment

    • Has a "superscan" bone scan

    • Is expecting to conceive or father children within the projected duration of the study, starting with the screening visit through 120 days after the last dose of study treatment

    • Has had an allogenic tissue/solid organ transplant

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 University of South Alabama, Mitchell Cancer Institute ( Site 0065) Mobile Alabama United States 36604
    2 St. Joseph Heritage Healthcare ( Site 0069) Fullerton California United States 92835
    3 University of Southern California Norris Comprehensive Cancer Center ( Site 0061) Los Angeles California United States 90033
    4 USC Norris Oncology Hematology Newport Beach ( Site 0093) Newport Beach California United States 92663
    5 University of California San Francisco ( Site 0023) San Francisco California United States 94158
    6 University of Colorado Cancer Center ( Site 0022) Aurora Colorado United States 80045
    7 Yale Cancer Center ( Site 0038) New Haven Connecticut United States 06510
    8 Moffitt Cancer Center ( Site 0080) Tampa Florida United States 33612
    9 Georgia Cancer Center at Augusta University ( Site 0026) Augusta Georgia United States 30912
    10 Mount Sinai Hospital Medical Center ( Site 0042) Chicago Illinois United States 60608
    11 Methodist Hospital- Merriillville ( Site 0008) Merrillville Indiana United States 46410
    12 Karmanos Cancer Institute ( Site 0077) Detroit Michigan United States 48201
    13 Henry Ford Health System ( Site 0039) Detroit Michigan United States 48202-2608
    14 Cancer & Hematology Centers of Western Michigan ( Site 0013) Grand Rapids Michigan United States 49503
    15 Washington University School of Medicine ( Site 0057) Saint Louis Missouri United States 63110
    16 St. Vincent Frontier Cancer Center ( Site 0016) Billings Montana United States 59102
    17 Nebraska Cancer Specialists ( Site 0034) Omaha Nebraska United States 68130
    18 Comprehensive Cancer Centers of Nevada ( Site 0092) Las Vegas Nevada United States 89169
    19 John Theurer Cancer Center at Hackensack University Medical Center ( Site 0004) Hackensack New Jersey United States 07601
    20 Associated Medical Professionals of NY ( Site 0060) Syracuse New York United States 13210
    21 Duke Cancer Center ( Site 0010) Durham North Carolina United States 27710
    22 W. G. Bill Hefner VA Medical Center ( Site 0029) Salisbury North Carolina United States 28144
    23 University Hospitals Cleveland Medical Center ( Site 0036) Cleveland Ohio United States 44106
    24 Oregon Health Sciences University ( Site 0031) Portland Oregon United States 97239
    25 Carolina Urologic Research Center ( Site 0070) Myrtle Beach South Carolina United States 29572
    26 Inova Schar Cancer Institute ( Site 0006) Fairfax Virginia United States 22031-4867
    27 Virginia Cancer Institute ( Site 0052) Richmond Virginia United States 23230
    28 Blue Ridge Cancer Care ( Site 0086) Roanoke Virginia United States 24014
    29 Centro de Oncologia e Investigacion Buenos Aires COIBA ( Site 1013) Berazategui Buenos Aires Argentina B1884BBF
    30 Instituto de Investigaciones Clinicas ( Site 1000) Mar del Plata Buenos Aires Argentina B7600FZN
    31 Centro de Diagnostico Urologico ( Site 1008) Buenos Aires Caba Argentina C1120AAT
    32 Hospital Britanico de Buenos Aires ( Site 1006) Buenos Aires Caba Argentina C1280AEB
    33 Sanatorio Parque ( Site 1002) Rosario Santa Fe Argentina S2000DSV
    34 Instituto de Investigaciones Metabolicas [Buenos Aires, Argentina] ( Site 1011) Buenos Aires Argentina C1012AAR
    35 Hospital Aleman ( Site 1004) Buenos Aires Argentina C1118AAT
    36 Instituto Medico Alexander Fleming ( Site 1010) Buenos Aires Argentina C1426ANZ
    37 CEMAIC ( Site 1014) Cordoba Argentina X5008HHW
    38 St George Hospital ( Site 0157) Kogarah New South Wales Australia 2217
    39 Macquarie University ( Site 0151) Macquarie University New South Wales Australia 2109
    40 Port Macquarie Base Hospital ( Site 0153) Port Macquarie New South Wales Australia 2444
    41 Calvary Mater Newcastle ( Site 0148) Waratah New South Wales Australia 2298
    42 Redcliffe Hospital ( Site 0161) Redcliffe Queensland Australia 4020
    43 John Flynn Hospital & Medical Centre ( Site 0164) Tugun Queensland Australia 4224
    44 Hollywood Private Hospital ( Site 0163) Nedlands Western Australia Australia 6009
    45 Ordensklinikum Linz GmbH Elisabethinen ( Site 0373) Linz Oberosterreich Austria 4020
    46 Medizinische Universitat Graz ( Site 0374) Graz Steiermark Austria 8036
    47 SCRI-CCCIT GesmbH ( Site 0371) Salzburg Austria 5020
    48 Medizinische Universitaet Wien ( Site 0375) Wien Austria 1090
    49 Hospital de Caridade de Ijui ( Site 1038) Ijui Rio Grande Do Sul Brazil 98700-000
    50 Uniao Brasileira de Educacao e Assistencia Hospital Sao Lucas da Pucrs ( Site 1021) Porto Alegre Rio Grande Do Sul Brazil 90610-000
    51 Centro de Novos Tratamentos Itajai - Clinica de Neoplasias Litoral ( Site 1035) Itajai Santa Catarina Brazil 88301-215
    52 Hospital de Base de Sao Jose de Rio Preto ( Site 1022) Sao Jose do Rio Preto Sao Paulo Brazil 15090-000
    53 A.C. Camargo Cancer Center ( Site 1026) Sao Paulo Brazil 01509-900
    54 Nova Scotia Health Authority QEII-HSC ( Site 0114) Halifax Nova Scotia Canada B3H 2Y9
    55 Hamilton Health Sciences-Juravinski Cancer Centre ( Site 0116) Hamilton Ontario Canada L8V5C2
    56 Grand River Hospital ( Site 0120) Kitchener Ontario Canada N2G 1G3
    57 Lakeridge Health ( Site 0117) Oshawa Ontario Canada L1G 2B9
    58 Sunnybrook Research Institute ( Site 0108) Toronto Ontario Canada M4N 3M5
    59 Princess Margaret Cancer Centre ( Site 0107) Toronto Ontario Canada M5G 2M9
    60 CIUSSS du Bas Saint Laurent - Hopital Regional de Rimouski ( Site 0102) Rimouski Quebec Canada G5L 5T1
    61 CIUSSS de l Estrie - CHUS - Centre Hosp. Univ. Sherbrooke ( Site 0105) Sherbrooke Quebec Canada J1H 5N4
    62 CHU de Quebec-Universite Laval-Hotel Dieu de Quebec ( Site 0103) Quebec Canada G1R 2J6
    63 Centro Investigación del Cáncer James Lind ( Site 1041) Temuco Araucania Chile 4780000
    64 Rey y Oreilly Limitada ( Site 1048) Temuco Araucania Chile 4810148
    65 Fundacion Arturo Lopez Perez ( Site 1049) Santiago Region M. De Santiago Chile 7500921
    66 Pontificia Universidad Catolica de Chile ( Site 1047) Santiago Region M. De Santiago Chile 8330032
    67 Bradford Hill Centro de Investigaciones Clinicas ( Site 1044) Santiago Region M. De Santiago Chile 8420383
    68 Centro de Investigaciones Clinicas Vina del Mar ( Site 1042) Vina del Mar Valparaiso Chile 2540488
    69 Peking University First Hospital ( Site 1303) Beijing Beijing China 100034
    70 The Fifth Medical Center of PLA General Hospital ( Site 1307) Beijing Beijing China 100071
    71 Beijing Cancer Hospital ( Site 1305) Beijing Beijing China 100142
    72 The First Affiliated Hospital of Xiamen University ( Site 1319) Xiamen Fujian China 361003
    73 Sun Yat Sen Memorial Hospital ( Site 1323) Guangzhou Guangdong China 510220
    74 The First Affiliated Hospital of Guangzhou Medical University ( Site 1330) Guangzhou Guangdong China 510230
    75 Harbin Medical University Cancer Hospital ( Site 1326) Harbin Heilongjiang China 150081
    76 Henan Cancer Hospital ( Site 1321) Zhengzhou Henan China 450008
    77 Hubei Cancer Hospital ( Site 1329) Wuhan Hubei China 430079
    78 Hunan Cancer Hospital ( Site 1320) Changsha Hunan China 410013
    79 Nanjing Drum Tower Hospital ( Site 1312) Nanjing Jiangsu China 210008
    80 Fudan University Shanghai Cancer Center ( Site 1300) Shanghai Shanghai China 200032
    81 Zhongshan Hospital Fudan University ( Site 1301) Shanghai Shanghai China 200032
    82 The Second Affiliated Hospital of Zhejiang University School of Medicine ( Site 1309) Hangzhou Zhejiang China 310009
    83 Zhejiang Provincial People's Hospital ( Site 1310) Hangzhou Zhejiang China 310014
    84 Hospital Pablo Tobon Uribe ( Site 1066) Medellin Antioquia Colombia 050034
    85 Biomelab S A S ( Site 1067) Barranquilla Atlantico Colombia 080002
    86 Clinica de la Costa Ltda. ( Site 1073) Barranquilla Atlantico Colombia 080020
    87 Sociedad de Oncología Y Hematología del Cesar S.A.S. ( Site 1068) Valledupar Cesar Colombia 200001
    88 Oncomedica S.A. ( Site 1057) Monteria Cordoba Colombia 230002
    89 Instituto Nacional de Cancerologia E.S.E ( Site 1061) Bogota Distrito Capital De Bogota Colombia 110321
    90 Clinica Colsanitas S.A. Sede Clinica Universitaria Colombia ( Site 1062) Bogota Distrito Capital De Bogota Colombia 111321
    91 Oncologos del Occidente S.A. ( Site 1072) Pereira Risaralda Colombia 660001
    92 Centro Medico Imbanaco de Cali S.A ( Site 1064) Cali Valle Del Cauca Colombia 760042
    93 Hemato Oncologos S.A. ( Site 1065) Cali Valle Del Cauca Colombia 760042
    94 C.H. de Saint Quentin ( Site 0481) Saint Quentin Aisne France 02321
    95 Clinique Sainte Anne ( Site 0431) Strasbourg Alsace France 67000
    96 Centre Jean Perrin ( Site 0434) Clermont-Ferrand Auvergne France 63011
    97 Centre Leon Berard ( Site 0422) Lyon Auvergne France 69373
    98 Institut Paoli Calmettes. ( Site 0419) Marseille Bouches-du-Rhone France 13009
    99 CHU Jean Minjoz ( Site 0423) Besancon Doubs France 25000
    100 CHU de Brest -Site Hopital Morvan ( Site 0441) Brest Finistere France 29200
    101 Institut Bergonie ( Site 0421) Bordeaux Gironde France 33076
    102 Institut Claudius Regaud IUCT Oncopole ( Site 0418) Toulouse Haute-Garonne France 31059
    103 Hopital Foch ( Site 0428) Suresnes Hauts-de-Seine France 92151
    104 Institut De Cancerologie De L Ouest ( Site 0448) Saint Herblain Loire-Atlantique France 44805
    105 Centre Hospitalier Regional du Orleans ( Site 0430) Orleans Loiret France 45100
    106 Centre D Oncologie de Gentilly ( Site 0432) Nancy Meurthe-et-Moselle France 54100
    107 C.H.U. Lyon Sud ( Site 0436) Pierre Benite Rhone France 69310
    108 CHU Amiens Picardie Site Sud Amiens ( Site 0438) Amiens Somme France 80000
    109 Institut Gustave Roussy ( Site 0416) Villejuif Val-de-Marne France 94800
    110 Institut Sainte Catherine ( Site 0447) Avignon Vaucluse France 84000
    111 Institut Mutualiste Montsouris ( Site 0446) Paris France 75014
    112 Universitaetsklinikum Freiburg - Medizinische Klinik ( Site 0304) Freiburg Baden-Wurttemberg Germany 79106
    113 Universitaetsklinikum in Mannheim ( Site 0314) Mannheim Baden-Wurttemberg Germany 68167
    114 Studienpraxis Urologie ( Site 0309) Nuertingen Baden-Wurttemberg Germany 72622
    115 Universitaetsklinik fuer Urologie ( Site 0307) Tuebingen Baden-Wurttemberg Germany 72076
    116 Klinikum Rechts der Isar ( Site 0300) Muenchen Bayern Germany 81675
    117 Universitaetsklinik der Paracelsus Medizinischen Privatuniversitaet ( Site 0318) Nuernberg Bayern Germany 90419
    118 Universitaetsklinikum Wuerzburg ( Site 0302) Wuerzburg Bayern Germany 97080
    119 Universitaetsklinikum Goettingen ( Site 0345) Goettingen Niedersachsen Germany 37075
    120 Uniklinik RWTH Aachen ( Site 0308) Aachen Nordrhein-Westfalen Germany 52074
    121 Universitaetsklinikum des Saarlandes ( Site 0348) Homburg Saarland Germany 66421
    122 Universitaetsklinikum Jena ( Site 0305) Jena Thuringen Germany 07747
    123 Charite Universitaetsmedizin Berlin ( Site 0301) Berlin Germany 10117
    124 Cork University Hospital ( Site 0727) Cork Ireland T12 YE02
    125 Tallaght University Hospital ( Site 0730) Dublin Ireland D24 NROA
    126 Mid Western Cancer Centre ( Site 0728) Limerick Ireland
    127 Soroka Medical Center ( Site 0548) Beer Sheva Israel 8410101
    128 Assaf Harofeh MC ( Site 0547) Beer Yaakov-Zerifin Israel 7030001
    129 Rambam Medical Center ( Site 0543) Haifa Israel 3109601
    130 Hadassah Ein Kerem Medical Center ( Site 0546) Jerusalem Israel 9112001
    131 Meir Medical Center ( Site 0544) Kfar Saba Israel 4428164
    132 Rabin Medical Center ( Site 0545) Petach-Tikwa Israel 4941492
    133 Chaim Sheba Medical Center ( Site 0541) Ramat Gan Israel 5262000
    134 Sourasky Medical Center ( Site 0542) Tel Aviv Israel 6423906
    135 Istituto Clinico Humanitas Research Hospital ( Site 0452) Rozzano Milano Italy 20089
    136 Azienda Ospedaliera Cannizzaro ( Site 0458) Catania Italy 95126
    137 A.O. Universitaria di Modena ( Site 0454) Modena Italy 41100
    138 Istituto Nazionale Tumori IRCCS Fondazione Pascale ( Site 0457) Napoli Italy 80131
    139 Azienda Ospedaliera San Camillo Forlanini ( Site 0455) Roma Italy 00152
    140 Azienda Ospedaliera Santa Maria Terni ( Site 0456) Terni Italy 05100
    141 Presidio Ospedaliero Santa Chiara ( Site 0451) Trento Italy 38122
    142 National Cancer Center Hospital East ( Site 0702) Kashiwa Chiba Japan 277-8577
    143 Toho University Sakura Medical Center ( Site 0703) Sakura Chiba Japan 285-8741
    144 National Hospital Organization Shikoku Cancer Center ( Site 0716) Matsuyama Ehime Japan 791-0280
    145 Kanazawa University Hospital ( Site 0701) Kanazawa Ishikawa Japan 920-8641
    146 Kitasato University Hospital ( Site 0705) Sagamihara Kanagawa Japan 252-0375
    147 Yokohama City University Medical Center ( Site 0706) Yokohama Kanagawa Japan 232-0024
    148 Nara Medical University Hospital ( Site 0715) Kashihara Nara Japan 634-8522
    149 Kindai University Hospital ( Site 0714) Osakasayama Osaka Japan 589-8511
    150 Osaka University Hospital ( Site 0713) Suita Osaka Japan 565-0871
    151 Saitama Medical University International Medical Center ( Site 0708) Hidaka Saitama Japan 1932
    152 Dokkyo Medical University Saitama Medical Center ( Site 0707) Koshigaya Saitama Japan 343-8555
    153 Hamamatsu University Hospital ( Site 0720) Hamamatsu Shizuoka Japan 431-3192
    154 Yamaguchi University Hospital ( Site 0717) Ube Yamaguchi Japan 755-8505
    155 Chiba Cancer Center ( Site 0704) Chiba Japan 260-8717
    156 Kyushu University Hospital ( Site 0718) Fukuoka Japan 812-8582
    157 University of Miyazaki Hospital ( Site 0721) Miyazaki Japan 889-1692
    158 Nagasaki University Hospital ( Site 0719) Nagasaki Japan 852-8501
    159 Toranomon Hospital ( Site 0711) Tokyo Japan 105-8470
    160 Nippon Medical School Hospital ( Site 0709) Tokyo Japan 113-8603
    161 Keio University Hospital ( Site 0710) Tokyo Japan 160-8582
    162 National Cancer Center ( Site 0174) Goyang-si Kyonggi-do Korea, Republic of 10408
    163 Seoul National University Bundang Hospital ( Site 0175) Seongnam-si Kyonggi-do Korea, Republic of 13620
    164 Seoul National University Hospital ( Site 0171) Seoul Korea, Republic of 03080
    165 Asan Medical Center ( Site 0176) Seoul Korea, Republic of 05505
    166 Samsung Medical Center ( Site 0172) Seoul Korea, Republic of 06351
    167 Medisch Centrum Leeuwarden ( Site 0477) Leeuwarden Fryslan Netherlands 8934 AD
    168 Ziekenhuis Gelderse Vallei ( Site 0485) Ede Gelderland Netherlands 6746 RP
    169 Radboud University Medical Center ( Site 0470) Nijmegen Gelderland Netherlands 6525 GA
    170 VieCuri Medisch Centrum ( Site 0487) Venlo Limburg Netherlands 5912 BL
    171 Jeroen Bosch Ziekenhuis ( Site 1200) Den Bosch Noord-Brabant Netherlands 5223 GZ
    172 Catharina Ziekenhuis ( Site 0472) Eindhoven Noord-Brabant Netherlands 5623 EJ
    173 Antoni van Leeuwenhoek Ziekenhuis ( Site 0480) Amsterdam Noord-Holland Netherlands 1066 CX
    174 Ziekenhuis Hilversum ( Site 0466) Hilversum Noord-Holland Netherlands 1213 XZ
    175 Ziekenhuisgroep Twente ( Site 0469) Hengelo Overijssel Netherlands 7555 DL
    176 Reinier de Graaf Groep ( Site 0484) Delft Zuid-Holland Netherlands 2625 AD
    177 Hagaziekenhuis ( Site 1201) Den Haag Zuid-Holland Netherlands 2545 AA
    178 Chelyabinsk Regional Clinical Oncological Dispensary ( Site 0565) Chelyabinsk Chelyabinskaya Oblast Russian Federation 454087
    179 Krasnoyarsk Regional Clinical Oncological Dispensary ( Site 0585) Krasnoyarsk Krasnoyarskiy Kray Russian Federation 660133
    180 SBIH City clinical hospital named after D.D. Pletniov ( Site 0575) Moscow Moskva Russian Federation 105077
    181 Russian Scientific Center of Radiology ( Site 0559) Moscow Moskva Russian Federation 117485
    182 Central Clinical Hospital with Polyclinic ( Site 0562) Moscow Moskva Russian Federation 121359
    183 National Medical Research Radiological Center ( Site 0556) Moscow Moskva Russian Federation 125284
    184 Volga District Medical Center Federal Medical and Biological Agency ( Site 0572) Nizhny Novgorod Nizhegorodskaya Oblast Russian Federation 603074
    185 Omsk Clinical Oncology Dispensary ( Site 0568) Omsk Omskaya Oblast Russian Federation 644013
    186 SBHI Samara Regional Clinical Oncology Dispensary ( Site 0576) Samara Samarskaya Oblast Russian Federation 443031
    187 Clinical Research Center of specialized types medical care-Oncology ( Site 0570) Saint Petersburg Sankt-Peterburg Russian Federation 197758
    188 Russian Scientific Center of Radiology and Surgical Technologies ( Site 0567) Saint Petersburg Sankt-Peterburg Russian Federation 197758
    189 SPb SBHI City Clinical Oncological Dispensary ( Site 0571) Saint Petersburg Sankt-Peterburg Russian Federation 198255
    190 Leningrad Regional Oncology Center ( Site 0588) Saint-Petersburg Sankt-Peterburg Russian Federation 188663
    191 Tomsk National Research Medical Center of Russian Academy of Sciences ( Site 0579) Tomsk Tomskaya Oblast Russian Federation 634050
    192 Instituto Catalan de Oncologia - ICO ( Site 0330) L Hospitalet De Llobregat Barcelona Spain 08908
    193 Hospital Consorci Sanitari Parc Tauli ( Site 0335) Sabadell Barcelona Spain 08208
    194 Hospital Universitario Marques de Valdecilla ( Site 0336) Santander Cantabria Spain 39008
    195 Hospital Josep Trueta ( Site 0321) Girona Gerona Spain 17007
    196 Hospital del Mar ( Site 0333) Barcelona Spain 08003
    197 Hospital Clinic ( Site 0323) Barcelona Spain 08036
    198 Hospital Universitario Ramon y Cajal ( Site 0328) Madrid Spain 28034
    199 Hospital Clinico San Carlos ( Site 0324) Madrid Spain 28040
    200 Hospital Universitario HM Sanchinarro ( Site 0322) Madrid Spain 28050
    201 Hospital Universitario Virgen de la Victoria ( Site 0337) Malaga Spain 29016
    202 Hospital Virgen del Rocio ( Site 0329) Sevilla Spain 41013
    203 National Cheng Kung University Hospital ( Site 0134) Tainen Tainan Taiwan 704
    204 China Medical University Hospital ( Site 0132) Taichung Taiwan 40447
    205 Taichung Veterans General Hospital ( Site 0133) Taichung Taiwan 40705
    206 National Taiwan University Hospital ( Site 0131) Taipei Taiwan 10048
    207 Taipei Veterans General Hospital ( Site 0135) Taipei Taiwan 11217
    208 University Hospitals Bristol NHS Foundation Trust ( Site 0530) Bristol Bristol, City Of United Kingdom BS2 8ED
    209 Cambridge University Hospitals NHS Trust ( Site 0540) Cambridge Cambridgeshire United Kingdom CB2 0QQ
    210 Torbay Hospital ( Site 0532) Torquay Devon United Kingdom TQ2 7AA
    211 Weston Park Hospital ( Site 0539) Sheffield England United Kingdom S10 2SJ
    212 Royal Marsden Hospital ( Site 0526) Sutton England United Kingdom SM2 5PT
    213 Mount Vernon Cancer Centre ( Site 0536) Northwood Hertfordshire United Kingdom HA6 2RN
    214 Barts Cancer Institute ( Site 0483) London London, City Of United Kingdom EC1A 7BE
    215 University of North Midlands NHS Foundation Trust ( Site 0527) Stoke-on-Trent Staffordshire United Kingdom ST4 6QG

    Sponsors and Collaborators

    • Merck Sharp & Dohme LLC

    Investigators

    • Study Director: Medical Director, Merck Sharp & Dohme LLC

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    None provided.
    Responsible Party:
    Merck Sharp & Dohme LLC
    ClinicalTrials.gov Identifier:
    NCT03834506
    Other Study ID Numbers:
    • 3475-921
    • MK-3475-921
    • KEYNOTE-921
    • JAPAC-CTI
    • 2018-004116-22
    First Posted:
    Feb 8, 2019
    Last Update Posted:
    Aug 12, 2022
    Last Verified:
    Aug 1, 2022
    Individual Participant Data (IPD) Sharing Statement:
    Yes
    Plan to Share IPD:
    Yes
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Keywords provided by Merck Sharp & Dohme LLC
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Aug 12, 2022