Pembrolizumab/Placebo Plus Trastuzumab Plus Chemotherapy in Human Epidermal Growth Factor Receptor 2 Positive (HER2+) Advanced Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma (MK-3475-811/KEYNOTE-811)

Trial Identifier: 3475-811
Sponsor: MSD
Start Date: October 2018
Primary Completion Date: March 2024
Study Completion Date: September 2025

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

Trial Locations

Country Location
Australia, New South Wales Liverpool, New South Wales, Australia, 2170
Australia, New South Wales Westmead, New South Wales, Australia, 2145
Australia, New South Wales Wollongong, New South Wales, Australia, 2500
Australia, Victoria Clayton, Victoria, Australia, 3168
Brazil, Bahia Salvador, Bahia, Brazil, 41253-190
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
Chile, Araucania Temuco, Araucania, Chile, 4780000
Chile, Maule Talca, Maule, Chile, 3460000
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 7500921
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 8380455
Chile, Region M. de Santiago Santiago, Region M. de Santiago, Chile, 7620002
China, Anhui Shanghai, Anhui, China, 200080
China, Beijing Beijing, China, 100032
China, Beijing Beijing, China, 100142
China, Beijing Beijing, China, 100071
China, Fujian Fuzhou, Fujian, China, 350014
China, Fujian Fuzhou, Fujian, China, 350025
China, Fujian Xiamen, Fujian, China, 361003
China, Guangdong Guangzhou, Guangdong, China, 510080
China, Heilongjiang Harbin, Heilongjiang, China, 150081
China, Henan Zhengzhou, Henan, China, 450008
China, Hunan Changsha, Hunan, China, 410008
China, Jiangsu Nanjing, Jiangsu, China, 210009
China, Jilin Chang chun, Jilin, China, 130021
China, Shanghai Shanghai, China, 200032
China, Xinjiang Urumqi, Xinjiang, China, 830001
China, Zhejiang Hangzhou, Zhejiang, China, 310016
China, Zhejiang Hangzhou, Zhejiang, China, 310022
China, Zhejiang Hangzhou, Zhejiang, China, 310003
France, Ain Rouen, Ain, France, 76000
France, Bas-Rhin Strasbourg, Bas-Rhin, France, 67098
France, Doubs Besancon, Doubs, France, 25030
France, Finistere Brest, Finistere, France, 29200
France, Nord Lille, Nord, France, 59000
France, Paris Paris, France, 75012
France, Rhone Lyon, Rhone, France, 69008
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, Baden-Wurttemberg Ludwigsburg, Baden-Wurttemberg, Germany
Germany, Baden-Wurttemberg Tuebingen, Baden-Wurttemberg, Germany, 72076
Germany, Bayern Muenchen, Bayern, Germany, 81675
Germany, Berlin Berlin, Germany, 13353
Germany, Bremen Bremen, Germany, 28211
Germany, Hamburg Hamburg, Germany, 22763
Germany, Hamburg Hamburg, Germany, 20249
Germany, Niedersachsen Hannover, Niedersachsen, Germany, 30625
Germany, Sachsen Dresden, Sachsen, Germany, 01307
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
Ireland, Dublin Dublin, Ireland, D09 V2N0
Ireland, Dublin Dublin, Ireland, D24 NR0A
Ireland, Dublin Dublin, Ireland, D08NHY1
Israel, N/A Beer Sheva, N/A, Israel, 8410101
Israel, N/A Haifa, N/A, Israel, 3109601
Israel, N/A Holon, N/A, Israel, 5822012
Israel, N/A Jerusalem, N/A, Israel, 9112001
Israel, N/A Kfar-Saba, N/A, Israel, 4428132
Israel, N/A Petah Tikva, N/A, Israel, 4941492
Israel, N/A Ramat Gan, N/A, Israel, 5265601
Israel, N/A Tel Aviv, N/A, Israel, 6423906
Italy, Bergamo Bergamo, Italy, 24125
Italy, Catanzaro Catanzaro, Italy, 88100
Italy, Milano Milano, Italy, 20141
Italy, Modena Modena, Italy, 41124
Italy, Napoli Napoli, Italy, 80131
Italy, Padova Padova, Italy, 35128
Italy, Pescara Pescara, Italy, 65100
Italy, Toscana Pisa, Toscana, Italy, 56126
Japan, Aichi Nagoya, Aichi, Japan, 464-8681
Japan, Chiba Chiba, Japan, 260-8717
Japan, Chiba Kashiwa, Chiba, Japan, 277-8577
Japan, Ehime Matsuyama, Ehime, Japan, 791-0280
Japan, Fukuoka Fukuoka, Japan, 811-1395
Japan, Gifu Gifu, Japan, 501-1194
Japan, Gunma Ohta, Gunma, Japan, 373-8550
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 Yokohama, Kanagawa, Japan, 241-8515
Japan, Kumamoto Kumamoto, Japan, 860-8556
Japan, Miyagi Osaki, Miyagi, Japan, 989-6183
Japan, Niigata Niigata, Japan, 951-8566
Japan, Osaka Hirakata, Osaka, Japan, 573-1191
Japan, Osaka Osaka, Japan, 541-8567
Japan, Osaka Osaka, Japan, 558-8558
Japan, Osaka Osaka, Japan, 540-0006
Japan, Osaka Osakasayama, Osaka, Japan, 589-8511
Japan, Osaka Suita, Osaka, Japan, 565-0871
Japan, Saitama Kitaadachi-gun, Saitama, Japan, 362-0806
Japan, Shizuoka Sunto-gun, Shizuoka, Japan, 411-8777
Japan, Tochigi Utsunomiya, Tochigi, Japan, 320-0834
Japan, Tokyo Mitaka, Tokyo, Japan, 181-8611
Japan, Tokyo Tokyo, Japan, 104-0045
Japan, Tokyo Tokyo, Japan, 113-8677
Japan, Tokyo Tokyo, Japan, 135-8550
Japan, Tokyo Tokyo, Japan, 105-8470
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
New Zealand, Auckland Auckland, New Zealand, 1023
Poland, Dolnoslaskie Wroclaw, Dolnoslaskie, Poland, 50-556
Poland, Dolnoslaskie Wroclaw, Dolnoslaskie, Poland, 53-413
Poland, Lubelskie Lublin, Lubelskie, Poland, 20-080
Poland, Mazowieckie Warszawa, Mazowieckie, Poland, 02-781
Poland, Pomorskie Gdynia, Pomorskie, Poland, 81-519
Poland, Pomorskie Koscierzyna, Pomorskie, Poland, 83-400
Poland, Slaskie Bielsko-Biala, Slaskie, Poland, 43-300
Poland, Wielkopolskie Konin, Wielkopolskie, Poland, 62-500
Russian Federation, Baskortostan, Respublika Ufa, Baskortostan, Respublika, Russian Federation, 450054
Russian Federation, Chelyabinskaya oblast Chelyabinsk, Chelyabinskaya oblast, Russian Federation, 454087
Russian Federation, Moskovskaya oblast Podolsk, Moskovskaya oblast, Russian Federation, 142110
Russian Federation, Moskva Moscow, Moskva, Russian Federation, 115478
Russian Federation, Samarskaya oblast Samara, Samarskaya oblast, Russian Federation, 443011
Russian Federation, Sankt-Peterburg Saint Petersburg, Sankt-Peterburg, Russian Federation, 198255
Russian Federation, Sankt-Peterburg Saint Petersburg, Sankt-Peterburg, Russian Federation, 197758
Russian Federation, Sankt-Peterburg Saint-Petersburg, Sankt-Peterburg, Russian Federation, 188663
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 Madrid, Spain, 28034
Spain, Madrid Pozuelo de Alarcon, Madrid, Spain, 28223
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, 54290
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 Khodosivka, Kyivska oblast, Ukraine, 08173
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, Derbyshire Derby, Derbyshire, United Kingdom, DE22 3NE
United Kingdom, Dundee City Dundee, Dundee City, United Kingdom, DD1 9SY
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 Kingdom, Manchester Manchester, United Kingdom, M20 4BX
United Kingdom, Surrey Sutton, Surrey, United Kingdom, SM2 5PT
United Kingdom, United Kingdom London, United Kingdom, United Kingdom, SW3 6JJ
United Kingdom, United Kingdom Northwood, United Kingdom, United Kingdom, HA6 2RN
United Kingdom, Walsall Walsall, United Kingdom, WS2 9PS
United States, CA Los Angeles, CA, United States, 90095
United States, CA Monterey, CA, United States, 93940
United States, CA Orange, CA, United States, 92868
United States, FL Miami, FL, United States, 33136
United States, GA Newnan, GA, United States, 30265
United States, IL Zion, IL, United States, 60099
United States, MA Boston, MA, United States, 02215
United States, MN Minneapolis, MN, United States, 55404
United States, MO St. Louis, MO, United States, 63110
United States, NC Charlotte, NC, United States, 28204
United States, NC Durham, NC, United States, 27710
United States, NJ Middletown, NJ, United States, 07748
United States, NY New York, NY, United States, 10065
United States, NY Rochester, NY, United States, 14642
United States, NY West Harrison, NY, United States, 10604
United States, OK Tulsa, OK, United States, 74133
United States, PA Philadelphia, PA, United States, 19124
United States, PA Pittsburgh, PA, United States, 15212
United States, SD Sioux Falls, SD, United States, 57104
United States, TX Houston, TX, United States, 77030
United States, VA Roanoke, VA, United States, 24014
United States, WA Seattle, WA, United States, 98109