A Study of Pembrolizumab in Japanese Pediatric Participants With Solid Tumors or Lymphomas and Japanese Adult Participants With Merkel Cell Carcinoma (MK-3475-G21/KEYNOTE-G21)
This is not medical advice. AI-assisted translation — inaccuracies may occur. Always verify the original and consult your oncologist before taking any steps.
About the trial
Researchers are looking for new ways to treat people with solid tumors, lymphomas (blood cancers), and a certain type of skin cancer. The goals of this study are to learn: * About the safety of pembrolizumab (the study medicine) and if people tolerate it * What happens to different doses of pembrolizumab in a person's body over time * How the cancer responds (gets smaller or goes away) to treatment
Original English text from ClinicalTrials.gov
Who can (and can't) join
✓ Qualifies
- •Potwierdzony nowotwór (chłoniak Hodgkina, chłoniak dużych komórek B w śródpiersiu, czerniak lub inny nowotwór stały)
- •Nowotwór widoczny w badaniach obrazowych
- •U dzieci z czerniakiem: nowotwór całkowicie usunięty chirurgicznie
- •U dorosłych z czerniakiem: nowotwór lokalnie zaawansowany lub dający przerzuty
- •Nowotwór nie poddawał się wcześniejszemu leczeniu lub leczenie nie zadziałało
- •U części pacjentów: badanie genetyczne pokazuje określone cechy nowotworu (MSI-H/dMMR lub TMB-H)
Simplified criteria — AI translation
Trial details
- Minimum age
- 6 Months
- Last updated (source)
- July 13, 2026
- Sex
- No restrictions
Therapies / drugs in trial
Locations (7)
Nagoya City University Hospital ( Site 0003)
Nagoya, Japan
Nagoya City University Hospital ( Site 0007)
Nagoya, Japan
Sapporo Hokuyu Hospital ( Site 0005)
Sapporo, Japan
Hyogo Prefectural Kobe Children's Hospital ( Site 0006)
Kobe, Japan
National Cancer Center Hospital ( Site 0002)
Chūō, Japan
National Hospital Organization Kyushu Cancer Center ( Site 0001)
Fukuoka, Japan
University Hospital,Kyoto Prefectural University of Medicine ( Site 0004)
Kyoto, Japan
Trial contact
Toll Free Number
Contact information from ClinicalTrials.gov. Contact in English.
Share this trial
Data from ClinicalTrials.gov. AI-assisted translation, last sync: 7/14/2026.
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