Panitumumab and Irinotecan for Malignant Gliomas

Sponsor
Annick Desjardins (Other)
Overall Status
Terminated
CT.gov ID
NCT01017653
Collaborator
Amgen (Industry)
16
1
1
19.9
0.8

Study Details

Study Description

Brief Summary

This is a phase II study of the combination of panitumumab with irinotecan in malignant glioma patients. The primary objective of the study is to determine the activity of the combination of panitumumab with irinotecan as measured by 6-month progression-free survival. Secondary objectives include the following- to determine the safety of panitumumab in combination with irinotecan in patients with malignant glioma; to determine the effect of panitumumab in combination with irinotecan on corticosteroid dose for each patient; to explore any relationship between epidermal growth factor receptor (EGF-R) mutational analysis and efficacy or toxicity; and, to determine the response rate and overall survival of recurrent glioblastoma (GBM) patients treated with panitumumab in combination with irinotecan.

The patients will have histologically documented grade 4 malignant gliomas (glioblastoma multiforme or gliosarcoma) that have failed at least one prior chemotherapy regimen and all patients will have received radiation therapy. This study will investigate second or greater line of therapy for recurrent grade 4 malignant glioma. The patient population will include 32 patients.

The patients will undergo a baseline magnetic resonance imaging (MRI) as well as a MRI after every six-week cycle to determine response and progression. After 16 patients with recurrent GBM are treated, an interim analysis will be conducted. The most common side effects associated with panitumumab have been dermatological (skin) problems such as erythema (redness of the skin), acneiform rash (skin eruptions of the face), skin exfoliation, pruritus (itching), skin fissures (skin tears), xerosis (dryness of the eye, skin, or mouth), and rash. The most common side effects associated with irinotecan have been decreased blood counts of platelets (increased risk of bleeding), white blood cells (increased risk of infection), red blood cells (anemia); diarrhea, constipation, nausea, vomiting, tiredness, fever, mouth sores, dehydration (excessive loss of body fluids), rash, itching, changes in skin color, swelling, numbness, tingling, dizziness, confusion, low blood pressure, sweating, hot flashes, hair loss, inflammation of the liver, flu-like symptoms, decreased urine output, shortness of breath, and pneumonia (inflammatory disease of the lungs).

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Actual Enrollment :
16 participants
Allocation:
N/A
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
Phase II Study of Panitumumab in Combination With Irinotecan for Malignant Gliomas
Study Start Date :
Feb 1, 2010
Actual Primary Completion Date :
Oct 1, 2011
Actual Study Completion Date :
Oct 1, 2011

Arms and Interventions

Arm Intervention/Treatment
Experimental: Panitumumab and irinotecan

Drug: Irinotecan
Irinotecan: for those patients on an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. For those not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment on both drugs will continue until tumor progression or unacceptable toxicity.
Other Names:
  • Camptosar
  • CPT-11
  • Drug: Panitumumab
    Panitumumab, 6 mg/kg, as an intravenous infusion every other week. Treatment on both drugs will continue until tumor progression or unacceptable toxicity.
    Other Names:
  • Vectibix
  • Outcome Measures

    Primary Outcome Measures

    1. 6-month Progression-free Survival (PFS) [6 months]

      Percentage of participants surviving six months from the start of study treatment without progression of disease. PFS was defined as the time from the date of study treatment initiation to the date of the first documented progression according to the Macdonald criteria, or to death due to any cause. Macdonald criteria are standard criteria in neuro-oncology. Tumor assessment was made according to the adapted MacDonald criteria based on the combined evaluation of: 1) assessment of the MRI scan for measurable, evaluable, and new lesions (made by the independent external expert too), 2) overall assessment of neurological performance (made by the investigator), and 3) concomitant steroid use (as reported by the investigator).

    Secondary Outcome Measures

    1. One-Year Overall Survival [1 year]

      Percentage of participants surviving 12 months from the start of study treatment. OS was defined as the time from the date of study treatment initiation to the date of the death due to any cause.

    2. Safety of Panitumumab in Combination With Irinotecan [16 months]

      Number of participants experiencing a toxicity ≥ grade 3 as graded per CTCAE v.3.0

    3. Effect of Panitumumab in Combination With Irinotecan on Corticosteroid Dose [Baseline and Day 29]

      Average change in corticosteroid dose from baseline to the end of cycle 1.

    4. Relationship Between Epidermal Growth Factor Receptor (EGF-R) Mutational Analysis and Efficacy or Toxicity [16 months]

      Number of participants with an abnormal fluorescence in situ hybridization (FISH) interpretation that 1) survived < 6 months and 2) experienced a ≥ grade 3 toxicity as graded per CTCAE v.3.0

    5. Objective Response Rate [16 months]

      Number of participants with an objective response (complete response or partial response) based on modified Macdonald criteria. A complete response is defined as the disappearance of all enhancing rumor and mass effect, off all corticosteroids, accompanied by a stable or improving neurologic examination, and maintained for at least 4 weeks. A partial response is defined as greater than or equal to 50% reduction in tumor size on MR (magnetic resonance) / CT(computed tomography) by bi-dimensional measurement on a stable or decreasing dose of corticosteroids, accompanied by a stable or improving neurologic examination, and maintained for at least 4 weeks.

    6. Median Overall Survival (OS) [18 months]

      Time in months from the start of study treatment to date of death due to any cause. Patients alive as of the last follow-up had OS censored at the last follow-up date. Median OS was estimated using a Kaplan-Meier curve.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Patients must have histologically confirmed diagnosis of primary malignant glioma (glioblastoma multiforme or gliosarcoma). Patients with recurrent disease whose diagnostic pathology confirmed grade IV malignant glioma (glioblastoma multiforme or gliosarcoma) will not need re-biopsy.

    • Age ≥ 18 years.

    • Evidence of measurable recurrent or residual primary central nervous system (CNS) neoplasm on contrast-enhanced MRI

    • An interval of at least 4 weeks between prior surgical resection, or major surgery requiring general anesthesia or 1 week between prior biopsy or minor surgical procedures and study enrollment. The subjects must have recovered from all surgery related toxicities.

    • An interval of at least 12 weeks between prior radiotherapy or 4 weeks from prior monthly chemotherapy, or 7 days from daily chemotherapy.

    • The lab values following the prior chemotherapy must return to the baseline prior to study enrollment.

    • Karnofsky ≥ 70%.

    • Hematocrit ≥ 29%, absolute neutrophil count (ANC) ≥ 1,500 cells/μl, platelets ≥ 125,000 cells/μl.

    • Serum creatinine ≤ 1.5 mg/dl, serum magnesium, potassium, calcium, chloride, and sodium ≥ the lower limit of normal, serum glutamic-oxaloacetic transaminase (SGOT) and bilirubin ≤ 1.5 times upper limit of normal.

    • Signed informed consent approved by the Institutional Review Board prior to patient entry.

    • If sexually active, patients will take contraceptive measures for the duration of the treatments, and for 6 months afterwards.

    Exclusion Criteria:
    • Pregnancy or breast feeding

    • Co-medication that may interfere with study results; e.g. immuno¬suppressive agents other than corticosteroids.

    • Active infection requiring intravenous antibiotics.

    • uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) homozygous for the 7/7 genotype.

    • Pre-existing diarrhea greater than Grade 1.

    Panitumumab-Specific Concerns:

    [Subjects meeting any of the following criteria are ineligible for study entry]

    • Prior anti-epidermal growth factor receptor (EGFr) antibody therapy or treatment with small molecule EGFr inhibitors

    • Clinically significant cardiovascular disease (including myocardial infarction, unstable angina, symptomatic congestive heart failure, serious uncontrolled cardiac arrhythmia) ≤ 1 year before enrollment.

    • History of interstitial lung disease e.g. pneumonitis or pulmonary fibrosis or evidence of interstitial lung disease on baseline chest CT scan.

    • History of any medical or psychiatric condition or laboratory abnormality that in the opinion of the investigator may increase the risk associated with the study participation or investigational product(s) administration or may interfere with the interpretation of the results.

    • Subject unwilling or unable to comply with study requirements

    • Subject pregnant or breast feeding, or planning to become pregnant within 6 months after the end of treatment.

    • Subject (male or female) is not willing to use highly effective methods of contraception (per institutional standard) during treatment and for 6 months (male or female) after the end of treatment.

    • Known positive test(s) for human immunodeficiency virus infection, hepatitis C virus, acute or chronic active hepatitis B infection(testing is not required in the absence of clinical suspicion)

    • Patients with a history of deep venous thrombosis, pulmonary embolism or on therapeutic anti-coagulation.

    • Known allergy or hypersensitivity to any component of the study treatment(s)

    • Active infection requiring systemic intravenous treatment of any uncontrolled infections ≤14 days prior to enrollment/randomization.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 The Preston Robert Tisch Brain Tumor Center at Duke University Medical Center Durham North Carolina United States 27710

    Sponsors and Collaborators

    • Annick Desjardins
    • Amgen

    Investigators

    • Principal Investigator: Annick Desjardins, MD, FRCPC, Duke University

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    None provided.
    Responsible Party:
    Annick Desjardins, Assist Professor of Medicine-Neurology, Duke University
    ClinicalTrials.gov Identifier:
    NCT01017653
    Other Study ID Numbers:
    • Pro00015447
    First Posted:
    Nov 20, 2009
    Last Update Posted:
    Sep 4, 2013
    Last Verified:
    Jul 1, 2013
    Keywords provided by Annick Desjardins, Assist Professor of Medicine-Neurology, Duke University
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details
    Pre-assignment Detail
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Period Title: Overall Study
    STARTED 16
    COMPLETED 16
    NOT COMPLETED 0

    Baseline Characteristics

    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Overall Participants 16
    Age (years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [years]
    48.73
    (14.58)
    Sex: Female, Male (Count of Participants)
    Female
    3
    18.8%
    Male
    13
    81.3%

    Outcome Measures

    1. Primary Outcome
    Title 6-month Progression-free Survival (PFS)
    Description Percentage of participants surviving six months from the start of study treatment without progression of disease. PFS was defined as the time from the date of study treatment initiation to the date of the first documented progression according to the Macdonald criteria, or to death due to any cause. Macdonald criteria are standard criteria in neuro-oncology. Tumor assessment was made according to the adapted MacDonald criteria based on the combined evaluation of: 1) assessment of the MRI scan for measurable, evaluable, and new lesions (made by the independent external expert too), 2) overall assessment of neurological performance (made by the investigator), and 3) concomitant steroid use (as reported by the investigator).
    Time Frame 6 months

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Number (95% Confidence Interval) [percentage of participants]
    12.5
    78.1%
    2. Secondary Outcome
    Title One-Year Overall Survival
    Description Percentage of participants surviving 12 months from the start of study treatment. OS was defined as the time from the date of study treatment initiation to the date of the death due to any cause.
    Time Frame 1 year

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Number (95% Confidence Interval) [percentage of participants]
    12.5
    78.1%
    3. Secondary Outcome
    Title Safety of Panitumumab in Combination With Irinotecan
    Description Number of participants experiencing a toxicity ≥ grade 3 as graded per CTCAE v.3.0
    Time Frame 16 months

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Number [participants]
    10
    62.5%
    4. Secondary Outcome
    Title Effect of Panitumumab in Combination With Irinotecan on Corticosteroid Dose
    Description Average change in corticosteroid dose from baseline to the end of cycle 1.
    Time Frame Baseline and Day 29

    Outcome Measure Data

    Analysis Population Description
    Insufficient data to analyze the effect of the treatment regimen on corticosteroid dose. Data was not collected for this outcome.
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Number [mg]
    NA
    5. Secondary Outcome
    Title Relationship Between Epidermal Growth Factor Receptor (EGF-R) Mutational Analysis and Efficacy or Toxicity
    Description Number of participants with an abnormal fluorescence in situ hybridization (FISH) interpretation that 1) survived < 6 months and 2) experienced a ≥ grade 3 toxicity as graded per CTCAE v.3.0
    Time Frame 16 months

    Outcome Measure Data

    Analysis Population Description
    Insufficient data to analyze the relationship between EGF-R analysis and efficacy or toxicity. Data was not collected for this outcome.
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Abnormal FISH Interpretation & Survived <6 months
    NA
    NaN
    Abnormal FISH Interpretation & ≥ grade 3 toxicity
    NA
    NaN
    6. Secondary Outcome
    Title Objective Response Rate
    Description Number of participants with an objective response (complete response or partial response) based on modified Macdonald criteria. A complete response is defined as the disappearance of all enhancing rumor and mass effect, off all corticosteroids, accompanied by a stable or improving neurologic examination, and maintained for at least 4 weeks. A partial response is defined as greater than or equal to 50% reduction in tumor size on MR (magnetic resonance) / CT(computed tomography) by bi-dimensional measurement on a stable or decreasing dose of corticosteroids, accompanied by a stable or improving neurologic examination, and maintained for at least 4 weeks.
    Time Frame 16 months

    Outcome Measure Data

    Analysis Population Description
    2 patients' response was unknown due to withdrawal from the study before an MRI was performed.
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 14
    Number [participants]
    0
    0%
    7. Secondary Outcome
    Title Median Overall Survival (OS)
    Description Time in months from the start of study treatment to date of death due to any cause. Patients alive as of the last follow-up had OS censored at the last follow-up date. Median OS was estimated using a Kaplan-Meier curve.
    Time Frame 18 months

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    Measure Participants 16
    Median (95% Confidence Interval) [months]
    4.6

    Adverse Events

    Time Frame 16 months
    Adverse Event Reporting Description The adverse events were gathered in Common Terminology Criteria for Adverse Events v.3.0, and have been converted to v.4.0 for entry into ClinicalTrials.gov
    Arm/Group Title Panitumumab and Irinotecan
    Arm/Group Description Panitumumab in Combination with Irinotecan : Panitumumab, 6mg/kg, as an intravenous infusion every other week in combination with Irinotecan (dose dependent upon whether the patient is taking an enzyme-inducing anti-epileptic drug [EIAED]). On an enzyme-inducing anti-epileptic drug (EIAED), irinotecan will be dosed at 340 mg/m2 every other week. Not on an EIAED, irinotecan will be dosed at 125 mg/m2. Treatment will continue until tumor progression or unacceptable toxicity.
    All Cause Mortality
    Panitumumab and Irinotecan
    Affected / at Risk (%) # Events
    Total / (NaN)
    Serious Adverse Events
    Panitumumab and Irinotecan
    Affected / at Risk (%) # Events
    Total 1/16 (6.3%)
    Nervous system disorders
    Intracranial hemorrhage 1/16 (6.3%)
    Ischemia cerebrovascular 1/16 (6.3%)
    Seizure 1/16 (6.3%)
    Other (Not Including Serious) Adverse Events
    Panitumumab and Irinotecan
    Affected / at Risk (%) # Events
    Total 16/16 (100%)
    Ear and labyrinth disorders
    "Ear and labyrinth disorders - Other, specify: Pop noise in ears" 1/16 (6.3%)
    Eye disorders
    Blurred vision 1/16 (6.3%)
    Optic nerve disorder 2/16 (12.5%)
    Gastrointestinal disorders
    Constipation 5/16 (31.3%)
    Diarrhea 3/16 (18.8%)
    "Gastrointestinal disorders - Other, specify: Acid Reflux" 3/16 (18.8%)
    Mucositis oral 1/16 (6.3%)
    Nausea 5/16 (31.3%)
    Vomiting 4/16 (25%)
    General disorders
    Chills 1/16 (6.3%)
    Edema limbs 2/16 (12.5%)
    Fatigue 13/16 (81.3%)
    Fever 1/16 (6.3%)
    Infections and infestations
    Lung infection 1/16 (6.3%)
    Nail infection 4/16 (25%)
    Scrotal infection 1/16 (6.3%)
    Investigations
    Alanine aminotransferase increased 2/16 (12.5%)
    Neutrophil count decreased 1/16 (6.3%)
    Metabolism and nutrition disorders
    Anorexia 4/16 (25%)
    Dehydration 3/16 (18.8%)
    Hyperglycemia 3/16 (18.8%)
    Hypokalemia 1/16 (6.3%)
    Hypomagnesemia 3/16 (18.8%)
    Musculoskeletal and connective tissue disorders
    Generalized muscle weakness 1/16 (6.3%)
    Muscle weakness left-sided 2/16 (12.5%)
    Muscle weakness right-sided 2/16 (12.5%)
    "Musculoskeletal and connective tissue disorder - Other, specify: Fall" 4/16 (25%)
    Nervous system disorders
    Ataxia 3/16 (18.8%)
    Cognitive disturbance 1/16 (6.3%)
    Dysgeusia 1/16 (6.3%)
    Dysphasia 3/16 (18.8%)
    "Nervous system disorders - Other, specify: Concentration impairment" 1/16 (6.3%)
    "Nervous system disorders - Other, specify: Gait" 2/16 (12.5%)
    Pyramidal tract syndrome 2/16 (12.5%)
    Seizure 5/16 (31.3%)
    Psychiatric disorders
    Confusion 1/16 (6.3%)
    Depression 1/16 (6.3%)
    Insomnia 1/16 (6.3%)
    Renal and urinary disorders
    Urinary incontinence 2/16 (12.5%)
    Respiratory, thoracic and mediastinal disorders
    Dyspnea 1/16 (6.3%)
    Voice alteration 1/16 (6.3%)
    Skin and subcutaneous tissue disorders
    Dry skin 3/16 (18.8%)
    Pruritus 4/16 (25%)
    Rash acneiform 9/16 (56.3%)
    Rash maculo-papular 9/16 (56.3%)
    "Skin and subcutaneous tissue disorders - Other, specify: Cuticle cuts/open wounds" 1/16 (6.3%)
    Skin and subcutaneous tissue disorders-Other, specify: Increased hair growth 1/16 (6.3%)
    "Skin and subcutaneous tissue disorders - Other, specify: Laceration, head" 1/16 (6.3%)
    Vascular disorders
    Thromboembolic event 1/16 (6.3%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    All Principal Investigators ARE employed by the organization sponsoring the study.

    There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.

    Results Point of Contact

    Name/Title Annick Desjardins
    Organization Preston Robert Tisch Brain Tumor Center
    Phone
    Email annick.desjardins@dm.duke.edu
    Responsible Party:
    Annick Desjardins, Assist Professor of Medicine-Neurology, Duke University
    ClinicalTrials.gov Identifier:
    NCT01017653
    Other Study ID Numbers:
    • Pro00015447
    First Posted:
    Nov 20, 2009
    Last Update Posted:
    Sep 4, 2013
    Last Verified:
    Jul 1, 2013