Evaluation of Co-formulated Pembrolizumab/Quavonlimab (MK-1308A) Versus Other Treatments in Participants With Microsatellite Instability-High (MSI-H) or Mismatch Repair Deficient (dMMR) Stage IV Colorectal Cancer (CRC) (MK-1308A-008/KEYSTEP-008)

CIMCA-Hemato-Oncology ( Site 2101), San José

Semmelweis Egyetem-Belgyógyászati és Hematológiai Klinika ( Site 2002), Budapest

UZ Brussel ( Site 0105), Brussels

Cliniques universitaires Saint-Luc-Medical Oncology ( Site 0104), Brussels

Rigshospitalet ( Site 1904), Copenhagen

UZ Leuven ( Site 0101), Leuven

Debreceni Egyetem Klinikai Kozpont-Onkológiai Klinika ( Site 2008), Debrecen

Odense Universitetshospital ( Site 1902), Odense

Jász-Nagykun-Szolnok Megyei Hetényi Géza Kórház-Onkologiai Kozpont ( Site 2001), Szolnok

Université Catholique de Louvain-Namur - Centre Hospitalier -Oncology ( Site 0102), Yvoir

Bacs-Kiskun Megyei Korhaz-Onkoradiologiai Kozpont ( Site 2005), Kecskemét

Regionshospitalet Gødstrup ( Site 1901), Herning

Somogy Megyei Kaposi Mór Oktató Kórház-Oncology center ( Site 2010), Kaposvár

Pécsi Tudományegyetem Klinikai Központ-Onkoterápiás Intézet ( Site 2009), Pécs

AZ Delta vzw ( Site 0106), Roeselare

Aalborg Universitetshospital, Syd ( Site 1903), Aalborg

Icahn School of Medicine at Mount Sinai ( Site 1528), New York

Charité Universitaetsmedizin Berlin - Campus Mitte ( Site 0604), Berlin

Hospital Metropolitano - Sede Lindora-Metropolitano Research Institute Sede Lindora ( Site 2102), Santa Ana

Hematology Oncology Associates of Rockland ( Site 1525), Nyack

Assistance Publique Hôpitaux de Marseille - Hôpital de la Ti-Service d'Hepato-Gastro-Enterologie et, Marseille

North Estonia Medical Centre Foundation-Chemotherapy ( Site 2301), Tallinn

UPMC Hillman Cancer Center ( Site 1516), Pittsburgh

Fondazione IRCCS Istituto Nazionale dei Tumori-Struttura Complessa Oncologia Medica 1 ( Site 0802), Milan

Centre Georges François Leclerc ( Site 0506), Dijon

Asklepios Altona-Oncology ( Site 0602), Hamburg

HOSPITAL GENERAL UNIVERSITARIO GREGORIO MARAÑON ( Site 1206), Madrid

Hospital Clinico San Carlos-Oncology Department ( Site 1204), Madrid

H.R.U Malaga - Hospital General ( Site 1207), Málaga

University Cancer & Blood Center, LLC ( Site 1521), Athens

COMPLEJO HOSPITALARIO DE NAVARRA-oncologia médica ( Site 1210), Pamplona

CHU Rangueil-Digestive oncology department ( Site 0502), Toulouse

Mid Florida Cancer Center ( Site 1519), Orange City

Hospital Universitario Central de Asturias-Medical Oncology ( Site 1203), Oviedo

Istanbul Universitesi Cerrahpasa-Medical Oncology ( Site 1302), Istanbul

TC Saglik Bakanligi Goztepe Prof. Dr. Suleyman Yalcin Sehir Hastanesi-oncology ( Site 1305), Istanbul

Universitätsklinikum Marburg ( Site 0610), Marburg

Istituto Oncologico Veneto IRCCS ( Site 0804), Padua

Vanderbilt University Medical Center-Vanderbilt-Ingram Cancer Center ( Site 1509), Nashville

The West Clinic, PLLC dba West Cancer Center ( Site 1576), Germantown

Hospital Universitario Marqués de Valdecilla ( Site 1202), Santander

Otto-von-Guericke-Universität Magdeburg-Klinik für Gastroenterologie, Hepatologie und Infektiologie, Magdeburg

Kyungpook National University Chilgok Hospital-Hematology/oncology ( Site 1103), Daegu

Kliniken Essen-Mitte, Evangelische Huyssens-Stiftung ( Site 0611), Essen

Fundación Instituto Valenciano de Oncología ( Site 1209), Valencia

Hospital of Lithuanian University of Health Sciences Kauno klinikos ( Site 2402), Kaunas

Tartu University Hospital ( Site 2302), Tartu

European Interbalkan Medical Center-Oncology Department ( Site 2701), Thessaloniki

Hopital Claude Huriez - CHU de Lille ( Site 0510), Lille

University of Chicago Medical Center-Medicine - Section of Hematology/Oncology - Gastrointestinal P, Chicago

UT Southwestern Medical Center ( Site 1551), Dallas

Hôpital Saint Antoine-Oncologie médicale ( Site 0508), Paris

Baylor Scott & White Medical Center - Temple-Division of Hematology/Oncology ( Site 1549), Temple

Istituto Nazionale Tumori IRCCS Fondazione Pascale-Department of Abdominal Oncology ( Site 0803), Napoli

Muenchen Klinik Neuperlach, Klinik fuer Haematologie und Onkologie ( Site 0612), Munich

Centre Hospitalier Universitaire de Poitiers ( Site 0511), Poitiers

Northwest Medical Specialties, PLLC ( Site 1546), Tacoma

Clinica Colsanitas S.A, Sede Clínica Universitaria Colombia ( Site 1611), Bogotá

Fed State Budgetary Inst N.N. Blokhin Med Center of Oncology-Clinical Pharmacology and Chemotherapy, Moscow

First Moscow State Medical University I.M. Sechenov-Interhospital Institution Health Management Cl, Moscow

GBUZ SPb CRPCstmc(o) ( Site 1005), Saint Petersburg

Saint-Petersburg City Clinical Oncology Dispensary-Department of chemotherapy ( Site 1001), Saint Petersburg

Sociedad De Oncologia Y Hematologia Del Cesar-Oncology ( Site 1601), Valledupar

"Centrul de Oncologie Sfântul Nectarie-Medical Oncology ( Site 2604)", Craiova

Oncomédica S.A.S ( Site 1602), Montería

Rostov Cancer Research Institute ( Site 1014), Rostov-on-Don

Cardiomed SRL Cluj-Napoca ( Site 2602), Cluj-Napoca

Republican Clinical Oncology Dispensary-Chemotherapy #3 ( Site 1006), Kazan'

Mediservis del Tolima IPS S.A.S ( Site 1609), Ibagué

The Moncton Hospital-Oncology ( Site 0307), Moncton

Sunnybrook Research Institute - Odette Cancer Centre ( Site 0316), Toronto

McGill University Health Centre-CIM - Oncology ( Site 0306), Montreal

Instituto de Cancerología ( Site 1610), Medellín

Fundación Colombiana de Cancerología Clínica Vida ( Site 1606), Medellín

Clinica de la Costa S.A.S. ( Site 1608), Barranquilla

Universitaetsklinikum Carl Gustav Carus Dresden-Medical Dept I - Medical Oncology ( Site 0601), Dresden

Alexandra General Hospital of Athens-ONCOLOGY DEPT. ( Site 2704), Athens

Evgenidion Hospital ( Site 2702), Athens

University General Hospital of Heraklion-Internal Medicine-Oncology ( Site 2703), Heraklion

CELAN,S.A ( Site 2202), Guatemala City

INTEGRA Cancer Institute-Oncology ( Site 2201), Guatemala City

MEDI-K CAYALA ( Site 2205), Guatemala City

Centro Regional de Sub Especialidades Médicas SA ( Site 2204), Quetzaltenango

Centro Medico Integral De Cancerología (CEMIC) ( Site 2203), Quetzaltenango

National Cancer Institute ( Site 2401), Vilnius

VILNIUS UNIVERSITY HOSPITAL SANTAROS KLINIKOS ( Site 2403), Vilnius

Nederlands Kanker Instituut - Antoni van Leeuwenhoek (NKI-AVL) ( Site 2901), Amsterdam

DOLNOSLASKIE CENTRUM ONKOLOGII PULMONOLOGII I HEMATOLOGII ( Site 0920), Wroclaw

Luxmed Onkologia sp. z o. o. ( Site 0915), Warsaw

Narodowy Instytut Onkologii im. Marii Sklodowskiej-Curie - P-Klinika Onkologii i Radioterapii ( Site, Warsaw

Mrukmed-Mrukmed ( Site 0901), Rzeszów

Szpital Wojewódzki im. Mikoaja Kopernika w Koszalinie-Oddzial Dzienny Chemioterapii ( Site 0903), Koszalin

Powiatowe Centrum Zdrowia ( Site 0911), Brzeziny

Spitalul de Oncologie Monza Oncologie Medicala ( Site 2601), Bucharest

Fundeni Clinical Institute-Medical Oncology ( Site 2603), Bucharest

Korea University Anam Hospital ( Site 1107), Seoul

Seoul National University Hospital-Internal Medicine ( Site 1101), Seoul

Severance Hospital, Yonsei University Health System-Medical oncology ( Site 1104), Seoul

Asan Medical Center-Department of Oncology ( Site 1105), Seoul

Samsung Medical Center-Division of Hematology/Oncology ( Site 1102), Seoul

The Catholic Univ. of Korea Seoul St. Mary's Hospital-Medical Oncology ( Site 1106), Seoul

Hospital Universitari Vall d'Hebron ( Site 1201), Barcelona

Baskent University Dr. Turgut Noyan Research and Training Center ( Site 1303), Adana

Hacettepe Universitesi-oncology hospital ( Site 1301), Ankara

Ankara City Hospital-Medical Oncology ( Site 1306), Ankara

Beatson West of Scotland Cancer Centre-Clinical Trials Unit ( Site 1401), Glasgow

UCLH-Cancer Clinical Trials Unit ( Site 1402), London-Camden

Velindre Cancer Centre-Research and Development ( Site 1415), Cardiff

University Hospital Coventry & Warwickshire ( Site 1406), Coventry