Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy in Participants Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma (MK-3475-859/KEYNOTE-859)

Trial Identifier: 3475-859
Sponsor: MSD
Start Date: November 2018
Primary Completion Date: October 2022
Study Completion Date: March 2025
Condition: Cancer - Other

Available Languages

For questions about your Trial Results Summary, please see Sponsor contact section within your Trial Results Summary.

Language Description
Protocol Plain Language Summary - English

Trial Locations

Country Location
Argentina, Buenos Aires Buenos Aires, Argentina, C1093AAS
Argentina, Buenos Aires Buenos Aires, Argentina, C1012AAR
Argentina, CABA Buenos Aires, CABA, Argentina, C1426ANZ
Argentina, La Rioja La Rioja, Argentina, F5300COE
Argentina, San Juan San Juan, Argentina, J5400EBB
Australia, New South Wales Liverpool, New South Wales, Australia, 2170
Australia, New South Wales Wollongong, New South Wales, Australia, 2500
Australia, Victoria Box Hill, Victoria, Australia, 3128
Brazil, Ceara Fortaleza, Ceara, Brazil, 60430-230
Brazil, Parana Curitiba, Parana, Brazil, 80810-050
Brazil, Rio de Janeiro Rio de Janeiro, Brazil, 20231-050
Brazil, Rio Grande do Sul Ijui, Rio Grande do Sul, Brazil, 98700 000
Brazil, Rio Grande do Sul Porto Alegre, Rio Grande do Sul, Brazil, 91350-200
Brazil, Santa Catarina Florianopolis, Santa Catarina, Brazil, 88034-000
Brazil, Sao Paulo Sao Paulo, Brazil, 03102-002
Canada, BC Abbotsford, BC, Canada, V2S 0C2
Canada, ON Toronto, ON, Canada, M4N 3M5
Canada, ON Toronto, ON, Canada, M5G 2M9
Canada, QC Montreal, QC, Canada, H4A 3J1
Chile, Araucania Temuco, Araucania, Chile, 4810469
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 7500921
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 7510032
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 7620002
China, Beijing Beijing, China, 100730
China, Beijing Beijing, China, 100021
China, Fujian Fuzhou, Fujian, China, 350025
China, Fujian Fuzhou, Fujian, China, 350014
China, Fujian Fuzhou, Fujian, China, 350001
China, Fujian Xiamen, Fujian, China, 361003
China, Fujian Xiamen, Fujian, China, 361004
China, Guangdong Guangzhou, Guangdong, China, 510080
China, Guangdong Shenzhen, Guangdong, China, 518036
China, Hebei Shijiazhuang, Hebei, China, 050011
China, Heilongjiang Harbin, Heilongjiang, China, 150081
China, Henan Zhengzhou, Henan, China, 450008
China, Hubei Wuhan, Hubei, China, 430079
China, Hunan Changsha, Hunan, China, 410008
China, Hunan Changsha, Hunan, China, 410013
China, Jiangsu Changzhou, Jiangsu, China, 213032
China, Jiangsu Nanjing, Jiangsu, China, 210002
China, Jiangsu Nanjing, Jiangsu, China, 210009
China, Jiangsu Yancheng, Jiangsu, China, 224000
China, Jiangxi Nanchang, Jiangxi, China, 330006
China, Jilin Chang chun, Jilin, China, 130021
China, Shandong Qingdao, Shandong, China, 266061
China, Shanghai Shanghai, China, 210000
China, Shanghai Shanghai, China, 200120
China, Shanxi XiAn, Shanxi, China, 710061
China, Xinjiang Urumqi, Xinjiang, China, 830001
China, Zhejiang Hangzhou, Zhejiang, China, 310016
China, Zhejiang Hangzhou, Zhejiang, China, 310022
China, Zhejiang Hangzhou, Zhejiang, China, 310014
Colombia, Cesar Valledupar, Cesar, Colombia, 200001
Colombia, Cordoba Monteria, Cordoba, Colombia, 230002
Colombia, Distrito Capital de Bogota Bogota, Distrito Capital de Bogota, Colombia, 110321
Colombia, Valle del Cauca Cali, Valle del Cauca, Colombia, 760042
Costa Rica, San Jose San Jose, Costa Rica, 10108
Costa Rica, San Jose San Jose, Costa Rica, 10103
Czech Republic, Jihomoravsky kraj Brno, Jihomoravsky kraj, Czech Republic, 65653
Czech Republic, Moravskoslezsky kraj Ostrava, Moravskoslezsky kraj, Czech Republic, 708 52
Czech Republic, Novy Jicin Novy Jicin, Czech Republic, 74101
Czech Republic, Olomouc Olomouc, Czech Republic, 779 00
Czech Republic, Plzensky kraj Plzen, Plzensky kraj, Czech Republic, 304 60
Czech Republic, Praha 4 Praha 4, Czech Republic, 140 59
Denmark, Hovedstaden Copenhagen, Hovedstaden, Denmark, 2100
Denmark, Nordjylland Aalborg, Nordjylland, Denmark, 9000
Denmark, Syddanmark Odense, Syddanmark, Denmark, 5000
France, Ain Rouen, Ain, France, 76000
France, Doubs Besancon, Doubs, France, 25030
France, Finistere Brest, Finistere, France, 29200
France, Nord Lille, Nord, France, 59000
France, Paris Paris, France, 75012
France, Val-de-Marne Saint-Herblain, Val-de-Marne, France, 44805
France, Val-de-Marne Villejuif, Val-de-Marne, France, 94805
Germany, Baden-Wurttemberg Heilbronn, Baden-Wurttemberg, Germany, 74078
Germany, Berlin Berlin, Germany, 13353
Germany, Hamburg Hamburg, Germany, 22763
Germany, Hamburg Hamburg, Germany, 20249
Germany, Sachsen Leipzig, Sachsen, Germany, 04103
Guatemala, Guatemala Guatemala, Guatemala, 01010
Guatemala, Guatemala Guatemala, Guatemala, 01015
Guatemala, Guatemala Guatemala, Guatemala, 01016
Guatemala, Quetzaltenango Quetzaltenango, Guatemala, 09001
Hong Kong, N/A Hong Kong, N/A, Hong Kong, NA
Hong Kong, N/A Hong Kong, N/A, Hong Kong, NULL
Hungary, Bacs-Kiskun Kecskemet, Bacs-Kiskun, Hungary, 6000
Hungary, Budapest Budapest, Hungary, 1122
Hungary, Budapest Budapest, Hungary, 1083
Hungary, Debrecen Debrecen, Hungary, 4032
Hungary, Jasz-Nagykun-Szolnok Szolnok, Jasz-Nagykun-Szolnok, Hungary, 5004
Ireland, Dublin Dublin, Ireland, D08 W9RT
Ireland, Dublin Dublin, Ireland, D24 NR0A
Ireland, Dublin Dublin, Ireland, D09V2N0
Israel, Haifa Haifa, Israel, 3109601
Israel, N/A Beer Sheva, N/A, Israel, 8410101
Israel, N/A Kfar Saba, N/A, Israel, 4428164
Israel, N/A Petah Tikva, N/A, Israel, 4941492
Israel, Tel Aviv Ramat Gan, Tel Aviv, Israel, 5266202
Israel, Tell Abib Holon, Tell Abib, Israel, 5822012
Israel, Tell Abib Tel Aviv, Tell Abib, Israel, 6423906
Israel, Yerushalayim Jerusalem, Yerushalayim, Israel, 9112001
Italy, Lombardia Milano, Lombardia, Italy, 20141
Italy, Milano Milano, Italy, 20133
Italy, Padova Padova, Italy, 35128
Italy, Roma Roma, Italy, 00152
Japan, Aichi Nagoya, Aichi, Japan, 464-8681
Japan, Chiba Kashiwa, Chiba, Japan, 277-8577
Japan, Fukuoka Fukuoka, Japan, 811-1395
Japan, Hiroshima Hiroshima, Japan, 730-8518
Japan, Hyogo Akashi, Hyogo, Japan, 673-8558
Japan, Hyogo Kobe, Hyogo, Japan, 650-0047
Japan, Ibaraki Kasama, Ibaraki, Japan, 309-1793
Japan, Kagawa Kita-gun, Kagawa, Japan, 761-0793
Japan, Kanagawa Sagamihara, Kanagawa, Japan, 252-0375
Japan, Kanagawa Yokohama, Kanagawa, Japan, 241-8515
Japan, Kumamoto Kumamoto, Japan, 860-8556
Japan, Niigata Niigata, Japan, 951-8566
Japan, Osaka Hirakata, Osaka, Japan, 573-1191
Japan, Osaka Osaka, Japan, 541-8567
Japan, Osaka Osakasayama, Osaka, Japan, 589-8511
Japan, Osaka Suita, Osaka, Japan, 565-0871
Japan, Saitama Kitaadachi-gun, Saitama, Japan, 362-0806
Japan, Tokyo Tokyo, Japan, 113-8677
Japan, Tokyo Tokyo, Japan, 135-8550
Japan, Tokyo Tokyo, Japan, 104-0045
Korea, Republic of, Seoul Seoul, Korea, Republic of, 03722
Korea, Republic of, Seoul Seoul, Korea, Republic of, 06351
Korea, Republic of, Seoul Seoul, Korea, Republic of, 05505
Korea, Republic of, Seoul Seoul, Korea, Republic of, 03080
Mexico, Jalisco Guadalajara, Jalisco, Mexico, 44280
Mexico, Mexico Ciudad de Mexico, Mexico, Mexico, 14080
Mexico, Mexico Merida, Mexico, Mexico, 97070
Mexico, Mexico Mexico City, Mexico, Mexico, 14080
Mexico, Nuevo Leon Monterrey, Nuevo Leon, Mexico, 64570
New Zealand, Northland Auckland, Northland, New Zealand, 1023
Peru, Lima Lima, Peru, 15082
Peru, Lima Lima, Peru, 15036
Peru, Lima Lima, Peru, 15038
Peru, Lima Lima, Peru, 15088
Poland Grudziadz, Poland, 86-300
Poland, Dolnoslaskie Wroclaw, Dolnoslaskie, Poland, 53-413
Poland, Dolnoslaskie Wroclaw, Dolnoslaskie, Poland, 50-556
Poland, Malopolskie Krakow, Malopolskie, Poland, 31-501
Poland, Mazowieckie Warszawa, Mazowieckie, Poland, 01-748
Poland, Mazowieckie Warszawa, Mazowieckie, Poland, 02-781
Poland, Wielkopolskie Konin, Wielkopolskie, Poland, 62-500
Russian Federation, Chelyabinskaya oblast Chelyabinsk, Chelyabinskaya oblast, Russian Federation, 454087
Russian Federation, Leningradskaya oblast Saint Petersburg, Leningradskaya oblast, Russian Federation, 194291
Russian Federation, Moskva Moscow, Moskva, Russian Federation, 121359
Russian Federation, Moskva Moscow, Moskva, Russian Federation, 115478
Russian Federation, Samarskaya oblast Samara, Samarskaya oblast, Russian Federation, 443031
Russian Federation, Sankt-Peterburg Saint Petersburg, Sankt-Peterburg, Russian Federation, 198255
South Africa, Eastern Cape Port Elizabeth, Eastern Cape, South Africa, 6045
South Africa, Free State Bloemfontein, Free State, South Africa, 9301
South Africa, Gauteng Johannesburg, Gauteng, South Africa, 2196
South Africa, Gauteng Parktown-Johannesburg, Gauteng, South Africa, 2193
South Africa, Gauteng Pretoria, Gauteng, South Africa, 0002
South Africa, Kwazulu-Natal Durban, Kwazulu-Natal, South Africa, 4091
South Africa, Western Cape Cape Town, Western Cape, South Africa, 7700
South Africa, Western Cape Cape Town, Western Cape, South Africa, 7925
South Africa, Western Cape George, Western Cape, South Africa, 6530
South Africa, Western Cape Kraaifontein, Western Cape, South Africa, 7570
Spain, Alicante Elche, Alicante, Spain, 03203
Spain, Asturias Oviedo, Asturias, Spain, 33011
Spain, Barcelona Badalona, Barcelona, Spain, 08916
Spain, Barcelona Barcelona, Spain, 08035
Spain, Cantabria Santander, Cantabria, Spain, 39008
Spain, Madrid Pozuelo de Alarcon, Madrid, Spain, 28223
Switzerland, Basel-Stadt Basel, Basel-Stadt, Switzerland, 4056
Switzerland, Geneve Geneva, Geneve, Switzerland, 1211
Switzerland, Grisons Chur, Grisons, Switzerland, 7000
Switzerland, Luzern Luzern, Switzerland, 6000
Switzerland, Sankt Gallen St. Gallen, Sankt Gallen, Switzerland, 9007
Switzerland, Ticino Bellinzona, Ticino, Switzerland, 6500
Switzerland, Zurich Zuerich, Zurich, Switzerland, 8091
Taiwan, Kaohsiung Kaohsiung, Taiwan, 83301
Taiwan, Tainan Tainan, Taiwan, 70457
Taiwan, Taipei Taipei, Taiwan, 104
Taiwan, Taipei Taipei, Taiwan, 100225
Turkey, Adana Adana, Turkey, 01370
Turkey, Ankara Ankara, Turkey, 06200
Turkey, Ankara Ankara, Turkey, 06100
Turkey, Edirne Edirne, Turkey, 22030
Turkey, Erzurum Erzurum, Turkey, 25240
Turkey, Istanbul Istanbul, Turkey, 34098
Turkey, Izmir Izmir, Turkey, 35340
Turkey, Malatya Malatya, Turkey, 44280
Turkey, Sakarya Sakarya, Turkey, 54000
Ukraine, Dnipropetrovska oblast Dnipro, Dnipropetrovska oblast, Ukraine, 49102
Ukraine, Dnipropetrovska oblast Kryviy Rih, Dnipropetrovska oblast, Ukraine, 50048
Ukraine, Ivano-Frankivska oblast Ivano-Frankivsk, Ivano-Frankivska oblast, Ukraine, 76018
Ukraine, Kharkivska oblast Kharkiv, Kharkivska oblast, Ukraine, 61070
Ukraine, Kyiv Kyiv, Ukraine, 03115
Ukraine, Kyivska oblast Kyiv, Kyivska oblast, Ukraine, 03022
Ukraine, Kyivska oblast Kyiv, Kyivska oblast, Ukraine, 03126
Ukraine, Lvivska oblast Lviv, Lvivska oblast, Ukraine, 79031
Ukraine, Odeska oblast Odesa, Odeska oblast, Ukraine, 65055
Ukraine, Zaporizka oblast Zaporizhzhya, Zaporizka oblast, Ukraine, 69104
United Kingdom, Devon Torquay, Devon, United Kingdom, TQ2 7AA
United Kingdom, East Riding of Yorkshire Cottingham, East Riding of Yorkshire, United Kingdom, HU16 5JQ
United Kingdom, London, City of London, London, City of, United Kingdom, SW17 0QT
United Kingdom, London, City of London, London, City of, United Kingdom, NW1 2PG
United States, CA Los Angeles, CA, United States, 90095
United States, CA Orange, CA, United States, 92868
United States, FL Miami, FL, United States, 33136
United States, MD Baltimore, MD, United States, 21204
United States, MN Minneapolis, MN, United States, 55404
United States, NY Rochester, NY, United States, 14642
United States, PA Philadelphia, PA, United States, 19124
United States, PA Pittsburgh, PA, United States, 15212
United States, VA Roanoke, VA, United States, 24014
United States, WA Wenatchee, WA, United States, 98801