Study of Pembrolizumab (MK-3475) Plus Enzalutamide Versus Placebo Plus Enzalutamide in Participants With Metastatic Castration-resistant Prostate Cancer (mCRPC) (MK-3475-641/KEYNOTE-641)

Sponsor
Merck Sharp & Dohme LLC (Industry)
Overall Status
Active, not recruiting
CT.gov ID
NCT03834493
Collaborator
(none)
1,240
258
2
67.1
4.8
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 enzalutamide in the treatment of men with metastatic castration-resistant prostate cancer (mCRPC) who have not received chemotherapy for mCRPC, are abiraterone-naïve, or are intolerant to or progressed on abiraterone acetate. There are two primary study hypotheses.

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

Hypothesis 2: The combination of pembrolizumab plus enzalutamide is superior to placebo plus enzalutamide 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
Anticipated Enrollment :
1240 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Triple (Participant, Investigator, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
A Phase 3, Randomized, Double-blind Trial of Pembrolizumab (MK-3475) Plus Enzalutamide Versus Placebo Plus Enzalutamide in Participants With Metastatic Castration-Resistant Prostate Cancer (mCRPC) (KEYNOTE-641)
Actual Study Start Date :
Jul 28, 2019
Anticipated Primary Completion Date :
Nov 12, 2023
Anticipated Study Completion Date :
Feb 28, 2025

Arms and Interventions

Arm Intervention/Treatment
Experimental: Pembrolizumab + Enzalutamide

Participants receive 200 mg pembrolizumab by intravenous (IV) infusion administered on Day 1 of each 21-day cycle (Q3W) for up to 35 cycles (approximately 2 years) PLUS enzalutamide 160 mg administered orally (PO) once a day (QD) continuously until progression.

Biological: Pembrolizumab
IV infusion
Other Names:
  • KEYTRUDA®
  • MK-3475
  • Drug: Enzalutamide
    Capsules/Tablets
    Other Names:
  • XTANDI®
  • Placebo Comparator: Placebo + Enzalutamide

    Participants receive placebo by IV infusion administered on Day 1 Q3W for up to 35 cycles (approximately 2 years) PLUS enzalutamide 160 mg administered PO QD continuously until progression.

    Drug: Enzalutamide
    Capsules/Tablets
    Other Names:
  • XTANDI®
  • Drug: Placebo
    IV infusion
    Other Names:
  • Normal saline or dextrose infusion
  • Outcome Measures

    Primary Outcome Measures

    1. Overall Survival (OS) [Up to ~ 51 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 ~ 51 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 or Death (TFST) [Up to ~ 67 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 ~ 67 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. Prostate-specific Antigen (PSA) Undetectable Rate [Up to ~ 67 months]

      Percentage of participants in the analysis population with PSA <0.2 ng/mL during study treatment

    4. 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 ~ 67 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

    5. 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 ~ 67 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

    6. Time to Prostate-specific Antigen (PSA) Progression [Up to ~ 67 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

    7. 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 ~ 67 months]

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

    8. 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 ~ 67 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

    9. Time to First Symptomatic Skeletal-related Event (SSRE) [Up to ~ 67 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

    10. Number of Participants Who Experience an Adverse Event (AE) [Up to ~ 67 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

    11. Number of Participants Who Discontinue Study Treatment Due to an Adverse Event (AE) [Up to ~ 67 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
    The main inclusion and exclusion criteria include but are not limited to the following:
    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 randomization

    • 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 met one of the following criteria with regard to abiraterone acetate exposure: (1) is abiraterone-naïve; (2) received prior abiraterone acetate for the treatment of mHSPC or mCRPC, for a minimum of 4 weeks and not progressed while on treatment; or (3) received prior abiraterone acetate for the treatment of mHSPC or mCRPC and progressed on treatment after a minimum of 8 weeks treatment (minimum 14 weeks for those with bone progression)

    • 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 ≥45 days after the last dose of enzalutamide: EITHER be abstinent OR must agree to use male condom

    • 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 (noninfectious) pneumonitis/interstitial lung disease that required steroids or current pneumonitis/interstitial lung disease

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

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

    • Has hypersensitivity to pembrolizumab and/or enzalutamide and/or any of their excipients

    • Has a history of seizure or any condition that may predispose to seizure

    • Has a history of loss of consciousness within 12 months of screening

    • Has hypotension (systolic blood pressure <86 millimeters of mercury [mmHg]) or uncontrolled hypertension (systolic blood pressure >170 mmHg or diastolic blood pressure >105 mmHg) at the screening visit

    • Has bradycardia (heart rate of <50 beats per minute) on the screening electrocardiogram (ECG)

    • Has history of prostate cancer progression on ketoconazole

    • Has had prior treatment with enzalutamide, apalutamide, darolutamide or cytochrome P450 (CYP) 17 inhibitor other than abiraterone acetate

    • 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 coinhibitory T-cell receptor

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

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

    • Has had a prior anti-cancer monoclonal antibody (mAb) prior to randomization

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

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

    • 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 90 days after the last dose of enzalutamide

    • 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 UCLA Hematology/Oncology - Santa Monica ( Site 0081) Los Angeles California United States 90404
    4 University of Colorado Cancer Center ( Site 0022) Aurora Colorado United States 80045
    5 Smilow Cancer Hospital at Yale New Haven ( Site 0038) New Haven Connecticut United States 06513
    6 Moffitt Cancer Center ( Site 0080) Tampa Florida United States 33612
    7 Georgia Cancer Center at Augusta University ( Site 0026) Augusta Georgia United States 30912
    8 Mount Sinai Hospital Medical Center ( Site 0042) Chicago Illinois United States 60608
    9 Methodist Hospitals. ( Site 0008) Merrillville Indiana United States 46410
    10 Tulane Cancer Center ( Site 0066) New Orleans Louisiana United States 70112
    11 University of Massachusetts Worcester ( Site 0053) Worcester Massachusetts United States 01655
    12 Cancer & Hematology Centers of Western Michigan ( Site 0013) Grand Rapids Michigan United States 49503
    13 Munson Medical Center ( Site 0030) Traverse City Michigan United States 49684
    14 St. Vincent Frontier Cancer Center ( Site 0016) Billings Montana United States 59102
    15 Oncology Hematology West, PC dba Nebraska Cancer Specialists ( Site 0034) Omaha Nebraska United States 68130
    16 Comprehensive Cancer Centers of Nevada ( Site 0092) Las Vegas Nevada United States 89169
    17 John Theurer Cancer Center at Hackensack University Medical Center ( Site 0004) Hackensack New Jersey United States 07601
    18 Associated Medical Professionals of NY ( Site 0060) Syracuse New York United States 13210
    19 W. G. Bill Hefner VA Medical Center ( Site 0029) Salisbury North Carolina United States 28144
    20 Gabrail Cancer Center-Research ( Site 0096) Canton Ohio United States 44718
    21 Tri-State Urologic Services PSC, Inc. ( Site 0094) Cincinnati Ohio United States 45212
    22 University Hospitals Cleveland Medical Center ( Site 0036) Cleveland Ohio United States 44106
    23 Oregon Health Sciences University ( Site 0031) Portland Oregon United States 97239
    24 Carolina Urologic Research Center ( Site 0070) Myrtle Beach South Carolina United States 29572
    25 Inova Schar Cancer Institute ( Site 0006) Fairfax Virginia United States 22031
    26 Virginia Cancer Institute ( Site 0052) Richmond Virginia United States 23230
    27 Blue Ridge Cancer Care ( Site 0086) Roanoke Virginia United States 24014
    28 Froedtert Hospital & the Medical College of Wisconsin ( Site 0045) Milwaukee Wisconsin United States 53226
    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 B7600FZO
    31 Centro de Diagnostico Urologico ( Site 1008) Buenos Aires Caba Argentina C1120AAT
    32 Instituto Medico Alexander Fleming ( Site 1010) Buenos Aires Caba Argentina
    33 Sanatorio Parque ( Site 1002) Rosario Santa Fe Argentina S2000DSV
    34 Instituto de Oncologia de Rosario ( Site 1015) Rosario Santa Fe Argentina S2000KZE
    35 Instituto de Investigaciones Metabolicas [Buenos Aires, Argentina] ( Site 1011) Buenos Aires Argentina C1012AAR
    36 Hospital Aleman ( Site 1004) Buenos Aires Argentina C1118AAT
    37 Centro Medico Dra De Salvo ( Site 1018) Buenos Aires Argentina C1426ANZ
    38 CEMAIC ( Site 1014) Cordoba Argentina X5008HHW
    39 Centro Oncologico Riojano Integral ( Site 1005) La Rioja Argentina F5300COE
    40 Centro Oncologico de Integracion Regional. COIR ( Site 1007) Mendoza Argentina M5500AYB
    41 St. Vincent's Hospital ( Site 0158) Darlinghurst New South Wales Australia 2010
    42 St George Hospital ( Site 0157) Kogarah New South Wales Australia 2217
    43 Macquarie University ( Site 0151) Macquarie University New South Wales Australia 2109
    44 Port Macquarie Base Hospital ( Site 0153) Port Macquarie New South Wales Australia 2444
    45 Calvary Mater Newcastle ( Site 0148) Waratah New South Wales Australia 2298
    46 Gallipoli Medical Research Foundation ( Site 0149) Greenslopes Queensland Australia 4120
    47 Gold Coast University Hospital ( Site 0150) Southport Queensland Australia 4215
    48 Royal Adelaide Hospital ( Site 0154) Adelaide South Australia Australia 5000
    49 Monash Health-Monash Medical Centre ( Site 0147) Clayton Victoria Australia 3168
    50 Fiona Stanley Hospital ( Site 0162) Perth Western Australia Australia 6150
    51 Ordensklinikum Linz GmbH Elisabethinen ( Site 0373) Linz Oberosterreich Austria 4020
    52 Medizinische Universität Wien ( Site 0375) Wien Austria 1090
    53 Hospital Erasto Gaertner-CEPEP - Pesquisa Clínica ( Site 1036) Curitiba Parana Brazil 81520-060
    54 Liga Norte Riograndense Contra o Câncer-Centro de Pesquisa Clínica ( Site 1032) Natal Rio Grande Do Norte Brazil 59075-740
    55 ONCOSITE - Centro de Pesquisa Clinica em Oncologia ( Site 1038) Ijui Rio Grande Do Sul Brazil 98700-000
    56 Uniao Brasileira de Educacao e Assistencia Hospital Sao Lucas da Pucrs ( Site 1021) Porto Alegre Rio Grande Do Sul Brazil 90610-000
    57 Centro de Novos Tratamentos Itajai - Clinica de Neoplasias Litoral ( Site 1035) Itajai Santa Catarina Brazil 88301-215
    58 Hospital de Base de Sao Jose de Rio Preto ( Site 1022) Sao Jose do Rio Preto Sao Paulo Brazil 15090-000
    59 Núcleo de Pesquisa Clínica da Rede São Camilo ( Site 1040) São Paulo Sao Paulo Brazil 04014-002
    60 A.C. Camargo Cancer Center ( Site 1026) Sao Paulo Brazil 01509-900
    61 MHAT Serdika-Second Department of Medical Oncology ( Site 0505) Sofia Sofia (stolitsa) Bulgaria 1301
    62 MHAT Central Hospital ( Site 0503) Plovdiv Bulgaria 4000
    63 Complex Cancer Center Plovdiv-First Medical Oncology Department ( Site 0507) Plovdiv Bulgaria 4004
    64 BC Cancer - Victoria ( Site 0111) Victoria British Columbia Canada V8R 6V5
    65 Hamilton Health Sciences-Juravinski Cancer Centre ( Site 0116) Hamilton Ontario Canada L8V5C2
    66 Grand River Hospital ( Site 0120) Kitchener Ontario Canada N2G 1G3
    67 Lakeridge Health ( Site 0117) Oshawa Ontario Canada L1G 2B9
    68 Health Sciences North ( Site 0122) Sudbury Ontario Canada P3E 5J1
    69 Sunnybrook Research Institute ( Site 0108) Toronto Ontario Canada M4N 3M5
    70 Princess Margaret Cancer Centre ( Site 0107) Toronto Ontario Canada M5G 2M9
    71 CISSS de la Monteregie-Centre ( Site 0119) Greenfield Park Quebec Canada J4V 2H1
    72 Centre Hospitalier de l Universite de Montreal - CHUM ( Site 0106) Montreal Quebec Canada H2X 0C1
    73 CIUSSS du Bas Saint Laurent - Hopital Regional de Rimouski ( Site 0102) Rimouski Quebec Canada G5L 5T1
    74 CIUSSS de l Estrie - CHUS - Centre Hosp. Univ. Sherbrooke ( Site 0105) Sherbrooke Quebec Canada J1H 5N4
    75 CHUQ-Univ Laval-Hotel Dieu de Quebec ( Site 0103) Quebec Canada G1R 2J6
    76 Centro Investigación del Cáncer James Lind ( Site 1041) Temuco Araucania Chile 4780000
    77 Rey y Oreilly Limitada ( Site 1048) Temuco Araucania Chile 4810148
    78 Fundacion Arturo Lopez Perez ( Site 1049) Santiago Region M. De Santiago Chile 7500921
    79 Pontificia Universidad Catolica de Chile ( Site 1047) Santiago Region M. De Santiago Chile 8330032
    80 Bradfordhill ( Site 1044) Santiago Region M. De Santiago Chile 8420383
    81 Oncocentro ( Site 1045) Vina del Mar Valparaiso Chile 2520598
    82 Hospital Pablo Tobon Uribe ( Site 1066) Medellin Antioquia Colombia 050034
    83 Biomelab S A S ( Site 1067) Barranquilla Atlantico Colombia 080002
    84 Clinica de la Costa Ltda. ( Site 1073) Barranquilla Atlantico Colombia 080020
    85 Sociedad de Oncología Y Hematología del Cesar S.A.S. ( Site 1068) Valledupar Cesar Colombia 200001
    86 Oncomedica S.A. ( Site 1057) Monteria Cordoba Colombia 230001
    87 Clinica Colsanitas S.A. Sede Clinica Universitaria Colombia ( Site 1062) Bogota Distrito Capital De Bogota Colombia 111321
    88 Centro Medico Imbanaco de Cali S.A ( Site 1064) Cali Valle Del Cauca Colombia 760042
    89 Hemato Oncologos S.A. ( Site 1065) Cali Valle Del Cauca Colombia 760042
    90 Fakultni Nemocnice u sv. Anny v Brne-Onkologicko-chirurgicke oddeleni ( Site 1303) Brno Brno-mesto Czechia 656 91
    91 Nemocnice AGEL Novy Jicin a.s. ( Site 1304) Nový Jičín Novy Jicin Czechia 741 01
    92 Fakultni nemocnice Olomouc ( Site 1301) Olomouc Czechia 779 00
    93 C.H. de Saint Quentin ( Site 0481) Saint Quentin Aisne France 02321
    94 Clinique Sainte Anne ( Site 0431) Strasbourg Alsace France 67000
    95 Centre Jean Perrin ( Site 0434) Clermont-Ferrand Auvergne France 63011
    96 CHU de Brest -Site Hopital Morvan ( Site 0441) Brest Bretagne France 29200
    97 CHU Jean Minjoz ( Site 0423) Besancon Doubs France 25000
    98 Institut Bergonie ( Site 0421) Bordeaux Gironde France 33076
    99 Institut Claudius Regaud IUCT Oncopole ( Site 0418) Toulouse Haute-Garonne France 31059
    100 Hopital Foch ( Site 0428) Suresnes Hauts-de-Seine France 92150
    101 Institut Regional du Cancer de Montpellier - ICM ( Site 0443) Montpellier Herault France 34298
    102 Institut De Cancerologie De L Ouest ( Site 0448) Saint Herblain Loire-Atlantique France 44805
    103 Centre Hospitalier Regional du Orleans ( Site 0430) Orleans Loiret France 45100
    104 Centre D Oncologie de Gentilly ( Site 0432) Nancy Meurthe-et-Moselle France 54100
    105 Centre Hospitalier de Valenciennes ( Site 0439) Valenciennes Nord France 59300
    106 C.H.U. Lyon Sud ( Site 0436) Pierre Benite Rhone France 69310
    107 CHU Amiens Picardie Site Sud Amiens ( Site 0438) Amiens Somme France 80000
    108 Institut Gustave Roussy ( Site 0416) Villejuif Val-de-Marne France 94800
    109 Institut Sainte Catherine ( Site 0447) Avignon Vaucluse France 84000
    110 Institut Mutualiste Montsouris ( Site 0446) Paris France 75014
    111 Universitaetsklinikum Freiburg - Medizinische Klinik ( Site 0304) Freiburg Baden-Wurttemberg Germany 79106
    112 Studienpraxis Urologie ( Site 0309) Nuertingen Baden-Wurttemberg Germany 72622
    113 Universitaetsklinik fuer Urologie ( Site 0307) Tuebingen Baden-Wurttemberg Germany 72076
    114 Klinikum Rechts der Isar ( Site 0300) Muenchen Bayern Germany 81675
    115 Universitaetsklinik der Paracelsus Medizinischen Privatuniversitaet ( Site 0318) Nuernberg Bayern Germany 90419
    116 Universitaetsklinikum Goettingen ( Site 0345) Goettingen Niedersachsen Germany 37075
    117 Uniklinik RWTH Aachen ( Site 0308) Aachen Nordrhein-Westfalen Germany 52074
    118 Universitaetsklinikum Muenster ( Site 0320) Muenster Nordrhein-Westfalen Germany 48149
    119 Krankenhaus der Barmherzigen Brueder Trier ( Site 0310) Trier Rheinland-Pfalz Germany 54292
    120 Universitaetsklinikum des Saarlandes ( Site 0348) Homburg Saarland Germany 66421
    121 Universitaetsklinikum Schleswig Holstein. ( Site 0346) Luebeck Schleswig-Holstein Germany 23538
    122 Universitaetsklinikum Jena ( Site 0305) Jena Thuringen Germany 07747
    123 Charite Universitaetsmedizin Berlin ( Site 0301) Berlin Germany 10117
    124 Bacs-Kiskun Megyei Korhaz-Onkoradiologiai Kozpont ( Site 1321) Kecskemét Bacs-Kiskun Hungary 6000
    125 Petz Aladár Megyei Oktató Kórház-Onkológiai Osztály ( Site 1324) Gyor Gyor-Moson-Sopron Hungary 9024
    126 Országos Onkológiai Intézet-Urogenital Tumors Department and Clinical Pharmacology ( Site 1325) Budapest Pest Hungary 1122
    127 Magyar Honvedseg Egeszsegugyi Kozpont-Onkologiai Osztaly ( Site 1326) Budapest Hungary 1062
    128 Beaumont Hospital ( Site 0726) Dublin Ireland D09 V2N0
    129 Tallaght University Hospital ( Site 0730) Dublin Ireland D24 NROA
    130 Mid Western Cancer Centre ( Site 0728) Limerick Ireland V94 YVH0
    131 HaEmek Medical Center ( Site 0548) Afula Israel 1834111
    132 Assuta Ashdod Medical Center ( Site 0550) Ashdod Israel 7747629
    133 Soroka Medical Center ( Site 0549) Beer Sheva Israel 8410101
    134 Rambam Health Care Campus-Oncology Division ( Site 0543) Haifa Israel 3109601
    135 Hadassah Ein Kerem Medical Center ( Site 0546) Jerusalem Israel 9112001
    136 Meir Medical Center ( Site 0544) Kfar Saba Israel 4428164
    137 Rabin Medical Center ( Site 0545) Petach-Tikwa Israel 4941492
    138 Chaim Sheba Medical Center ( Site 0541) Ramat Gan Israel 5262000
    139 Sourasky Medical Center ( Site 0542) Tel Aviv Israel 6423906
    140 Yitzhak Shamir Medical Center ( Site 0547) Zerifin Israel 7030001
    141 Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori-Oncologia Medica ( Site 0464) Meldola Emilia-Romagna Italy 47014
    142 Istituto Clinico Humanitas Research Hospital ( Site 0452) Rozzano Lombardia Italy 20089
    143 Presidio Ospedaliero S. Maria Delle Grazie-U.O.C. ONCOLOGIA ( Site 0802) Pozzuoli Napoli Italy 80078
    144 Centro Di Riferimento Oncologico ( Site 0800) Aviano Pordenone Italy 33081
    145 Azienda Ospedaliera Universitaria Integrata Verona - Ospedale Borgo Roma-Oncology Unit ( Site 0465) Verona Veneto Italy 37134
    146 Medical Oncology Ospedale San Donato ( Site 0461) Arezzo Italy 52100
    147 Ospedale Policlinico S. Orsola-Malpighi ( Site 0453) Bologna Italy 40138
    148 Azienda Ospedaliera Cannizzaro ( Site 0458) Catania Italy 95126
    149 A.O. Universitaria di Modena ( Site 0454) Modena Italy 41124
    150 Istituto Nazionale Tumori IRCCS Fondazione Pascale ( Site 0462) Napoli Italy 80131
    151 Azienda Ospedaliera San Camillo Forlanini ( Site 0455) Roma Italy 00152
    152 Fondazione Policlinico Universitario Agostino Gemelli ( Site 0801) Roma Italy 00168
    153 Azienda Ospedaliera Santa Maria Terni ( Site 0456) Terni Italy 05100
    154 Az. Osp. Univ. Sta Maria della Misericordia di Udine ( Site 0460) Udine Italy 33100
    155 National Cancer Center Hospital East ( Site 0702) Kashiwa Chiba Japan 277-8577
    156 Toho University Sakura Medical Center ( Site 0703) Sakura Chiba Japan 285-8741
    157 National Hospital Organization Shikoku Cancer Center ( Site 0716) Matsuyama Ehime Japan 791-0280
    158 Iizuka Hospital ( Site 0744) Iizuka Fukuoka Japan 820-8505
    159 Hakodate Goryoukaku Hospital ( Site 0739) Hakodate Hokkaido Japan 040-8611
    160 Kanazawa University Hospital ( Site 0701) Kanazawa Ishikawa Japan 920-8641
    161 Kitasato University Hospital ( Site 0705) Sagamihara Kanagawa Japan 252-0375
    162 Yokohama City University Medical Center ( Site 0706) Yokohama Kanagawa Japan 232-0024
    163 Miyagi Cancer Center ( Site 0747) Natori Miyagi Japan 981-1293
    164 Nara Medical University Hospital ( Site 0715) Kashihara Nara Japan 634-8522
    165 Kindai University Hospital ( Site 0714) Osakasayama Osaka Japan 589-8511
    166 Osaka University Hospital ( Site 0713) Suita Osaka Japan 565-0871
    167 Saitama Medical University International Medical Center ( Site 0708) Hidaka Saitama Japan 350-1298
    168 Saitama Medical Center ( Site 0743) Kawagoe Saitama Japan 350-8550
    169 Dokkyo Medical University Saitama Medical Center ( Site 0707) Koshigaya Saitama Japan 343-8555
    170 Hamamatsu University Hospital ( Site 0720) Hamamatsu Shizuoka Japan 431-3192
    171 Yamaguchi University Hospital ( Site 0717) Ube Yamaguchi Japan 755-8505
    172 Chiba Cancer Center ( Site 0704) Chiba Japan 260-8717
    173 Kyushu University Hospital ( Site 0718) Fukuoka Japan 812-8582
    174 Hiroshima Prefectural Hospital ( Site 0748) Hiroshima Japan 734-8530
    175 University of Miyazaki Hospital ( Site 0721) Miyazaki Japan 889-1692
    176 Nagasaki University Hospital ( Site 0719) Nagasaki Japan 852-8501
    177 Toranomon Hospital ( Site 0711) Tokyo Japan 105-8470
    178 Nippon Medical School Hospital ( Site 0709) Tokyo Japan 113-8603
    179 Keio University Hospital ( Site 0710) Tokyo Japan 160-8582
    180 National Cancer Center ( Site 0174) Goyang-si Kyonggi-do Korea, Republic of 10408
    181 Seoul National University Bundang Hospital ( Site 0175) Seongnam-si Kyonggi-do Korea, Republic of 13620
    182 Asan Medical Center ( Site 0176) Songpagu Seoul Korea, Republic of 05505
    183 Seoul National University Hospital ( Site 0171) Seoul Korea, Republic of 03080
    184 Samsung Medical Center ( Site 0172) Seoul Korea, Republic of 06351
    185 Radboud University Medical Center ( Site 0470) Nijmegen Gelderland Netherlands 6525 GA
    186 Maastricht University Medical Centre ( Site 0467) Maastricht Limburg Netherlands 6202AZ
    187 Amphia Hospital Location Molengracht ( Site 0474) Breda Noord-Brabant Netherlands 4818 CK
    188 Catharina Ziekenhuis ( Site 0472) Eindhoven Noord-Brabant Netherlands 5623 EJ
    189 Noordwest Ziekenhuisgroep NWZ ( Site 0468) Alkmaar Noord-Holland Netherlands 1815 JD
    190 Vrije Universiteit Medisch Centrum ( Site 0479) Amsterdam Noord-Holland Netherlands 1081 HV
    191 Tergooiziekenhuizen ( Site 0466) Hilversum Noord-Holland Netherlands 1213 XZ
    192 Spaarne Ziekenhuis ( Site 0473) Hoofddorp Noord-Holland Netherlands 2134TM
    193 Ziekenhuisgroep Twente ( Site 0469) Hengelo Overijssel Netherlands 7555 DL
    194 Haaglanden MC - locatie Antoniushove ( Site 0471) Leidschendam Zuid-Holland Netherlands 2262 BA
    195 Franciscus Gasthuis en Vlietland ( Site 0489) Schiedam Zuid-Holland Netherlands 3118 JH
    196 Tauranga Hospital ( Site 0215) Tauranga Bay Of Plenty New Zealand 3112
    197 Canterbury Regional Cancer & Blood Service ( Site 0195) Christchurch Canterbury New Zealand 8011
    198 Auckland City Hospital ( Site 0193) Auckland New Zealand 1023
    199 Centrum Onkologii im. Prof. Franciszka Lukaszczyka ( Site 0636) Bydgoszcz Kujawsko-pomorskie Poland 85-796
    200 Salve Medica SP ( Site 0686) Lodz Lodzkie Poland 91-211
    201 Provita Prolife Centrum Medyczne ( Site 0630) Tomaszow Mazowiecki Lodzkie Poland 97-200
    202 Clinical Best Solutions ( Site 0622) Warszawa Mazowieckie Poland 02-793
    203 Przychodnia Lekarska Komed ( Site 0628) Konin Wielkopolskie Poland 62-500
    204 Szpital Wojewodzki im. Mikolaja Kopernika ( Site 0624) Koszalin Zachodniopomorskie Poland 75-581
    205 Puerto Rico Medical Research Center LLC ( Site 1122) San Juan Puerto Rico 00918
    206 Fundacion de Investigacion de Diego ( Site 1121) San Juan Puerto Rico 00927
    207 Chelyabinsk Regional Clinical Oncological Dispensary ( Site 0565) Chelyabinsk Chelyabinskaya Oblast Russian Federation 454087
    208 Krasnoyarsk Regional Clinical Oncological Dispensary ( Site 0585) Krasnoyarsk Krasnoyarskiy Kray Russian Federation 660133
    209 Russian Scientific Center of Roentgenoradiology ( Site 0559) Moscow Moskva Russian Federation 117485
    210 Central Clinical Hospital with Polyclinic ( Site 0562) Moscow Moskva Russian Federation 121359
    211 Omsk Clinical Oncology Dispensary ( Site 0568) Omsk Omskaya Oblast Russian Federation 644013
    212 SBHI Samara Regional Clinical Oncology Dispensary ( Site 0576) Samara Samarskaya Oblast Russian Federation 443031
    213 SBHI Leningrad Regional Oncology Dispensary ( Site 0588) Saint Petersburg Sankt-Peterburg Russian Federation 191104
    214 Clinical Research Center of specialized types medical care-Oncology ( Site 0570) Saint Petersburg Sankt-Peterburg Russian Federation 197758
    215 Russian Scientific Center of Radiology and Surgical Technologies ( Site 0567) Saint Petersburg Sankt-Peterburg Russian Federation 197758
    216 Tomsk National Scientific Medical Center of Russian Academy of Science ( Site 0579) Tomsk Tomskaya Oblast Russian Federation 634050
    217 Instituto Catalan de Oncologia - ICO ( Site 0330) L Hospitalet De Llobregat Barcelona Spain 08908
    218 Hospital Parc Tauli ( Site 0335) Sabadell Barcelona Spain 08208
    219 Hospital Josep Trueta ( Site 0321) Girona Gerona Spain 17007
    220 Hospital Quiron Madrid ( Site 0325) Pozuelo de Alarcon Madrid Spain 28223
    221 Instituto Valenciano de Oncologia ( Site 0331) Valencia Valenciana, Comunitat Spain 46009
    222 Hospital del Mar ( Site 0333) Barcelona Spain 08003
    223 Hospital Provincial San Pedro Alcantara ( Site 0326) Caceres Spain 10003
    224 Hospital Universitario Gregorio Maranon ( Site 0327) Madrid Spain 28007
    225 MD Anderson Cancer Center Madrid ( Site 0332) Madrid Spain 28033
    226 Hospital Clinico San Carlos ( Site 0324) Madrid Spain 28040
    227 Hospital Universitario HM Sanchinarro ( Site 0322) Madrid Spain 28050
    228 Hospital Universitario Virgen de la Victoria ( Site 0337) Malaga Spain 29016
    229 Hospital Virgen del Rocio ( Site 0329) Sevilla Spain 41013
    230 National Cheng Kung University Hospital ( Site 0134) Tainen Tainan Taiwan 704
    231 China Medical University Hospital ( Site 0132) Taichung Taiwan 40447
    232 Taichung Veterans General Hospital ( Site 0133) Taichung Taiwan 407
    233 National Taiwan University Hospital ( Site 0131) Taipei Taiwan 10048
    234 Taipei Veterans General Hospital ( Site 0135) Taipei Taiwan 112
    235 Ege University Medicine of Faculty ( Site 0661) Bornova Izmir Turkey 35100
    236 Baskent University Dr. Turgut Noyan Research and Training Center-ONCCOLOGY ( Site 0618) Adana Turkey 01250
    237 Ankara University Hospital Cebeci ( Site 0613) Ankara Turkey 06100
    238 Hacettepe Universitesi-oncology hospital ( Site 0615) Ankara Turkey 06230
    239 Ankara City Hospital-Medical Oncology ( Site 0616) Ankara Turkey 06800
    240 T.C. Saglik Bakanligi Turkiye Kamu Hastaneleri Kurumu - Baki-Istanbul Bakirkoy Sadi Konuk Training ( Istanbul Turkey 34440
    241 Acıbadem Maslak Hastanesi ( Site 0660) İstanbul Turkey 34457
    242 TC Saglik Bakanligi Goztepe Prof. Dr. Suleyman Yalcin Sehir Hastanesi-oncology ( Site 0619) Istanbul Turkey 34722
    243 Cherkasy Regional Oncology Dispensary ( Site 1203) Cherkassy Cherkaska Oblast Ukraine 18009
    244 Dnepropetrovsk Regional Clinical Oncology Hospital-Clinical oncological dispensary ( Site 1201) Dnipropetrovsk Dnipropetrovska Oblast Ukraine 49055
    245 Dnepropetrovsk Regional Clinical Hospital Mechnikov-Department of urology ( Site 1205) Dnipro Dnipropetrovska Oblast Ukraine 49005
    246 Ivano-Frankivsk Regional Hospital-Urology department ( Site 1208) Ivano-Frankivsk Ivano-Frankivska Oblast Ukraine 76008
    247 Communal Non-Commercial Enterprise ""Prykarpatski Clinical Oncological Center"" of Ivano-Frankivsk R Ivano-Frankivsk Ivano-Frankivska Oblast Ukraine 76018
    248 CNPE Regional Center of Oncology-oncourology department ( Site 1202) Kharkiv Kharkivska Oblast Ukraine 61070
    249 LISOD - Israeli Oncological Hospital ""MedX-ray Internationa-Department of Clinical and Scientific ( Kiev Kyivska Oblast Ukraine 08720
    250 Municipal non-profit enterprise Kyiv City Clinical Oncology -Oncourology department ( Site 1204) Kyiv Kyivska Oblast Ukraine 03115
    251 University Hospitals Bristol NHS Foundation Trust ( Site 0530) Bristol Bristol, City Of United Kingdom BS2 8ED
    252 Cambridge University Hospitals NHS Trust ( Site 0540) Cambridge Cambridgeshire United Kingdom CB2 0QQ
    253 Torbay Hospital ( Site 0532) Torquay Devon United Kingdom TQ2 7AA
    254 University College London Hospitals NHS Foundation Trust ( Site 0482) London London, City Of United Kingdom NW1 2PG
    255 Musgrove Park Hospital ( Site 0537) Taunton Somerset United Kingdom TA1 5DA
    256 Royal Marsden Hospital (Sutton) ( Site 0526) London Sutton United Kingdom SM2 5PT
    257 Western General Hospital ( Site 0531) Edinburgh Worcestershire United Kingdom EH42XU
    258 Mount Vernon Cancer Centre ( Site 0536) Northwood United Kingdom HA6 2RN

    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:
    NCT03834493
    Other Study ID Numbers:
    • 3475-641
    • MK-3475-641
    • KEYNOTE-641
    • 195005
    • 2018-004117-40
    First Posted:
    Feb 8, 2019
    Last Update Posted:
    Jun 21, 2022
    Last Verified:
    Jun 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 Jun 21, 2022