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Molecular Profile MLH1 negative
Therapy Pembrolizumab
Indication/Tumor Type biliary tract cancer
Response Type sensitive

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
MLH1 negative biliary tract cancer sensitive Pembrolizumab Guideline Actionable Keytruda (pembrolizumab) is included in the Pan-Asian Guidelines Adaptation (PAGA) for patients with mismatch repair-deficient (dMMR, defined by the loss of MLH1, PMS2, MSH2, or MSH6 expression by IHC) biliary tract cancer who have progressed on or are intolerant of non-immune checkpoint inhibitor therapies (PMID: 39232586; ESMO.org). detail... 39232586
MLH1 negative biliary tract cancer sensitive Pembrolizumab Phase II Actionable In a Phase II trial (KEYNOTE-158), Keytruda (pembrolizumab) treatment resulted in an objective response rate of 40.9% (9/22, 3 complete responses and 6 partial responses), a duration of response of 30.5 mo, a median progression-free survival of 4.2 mo, and a median overall survival of 19.4 mo in patients with microsatellite instability-high (MSI-H) or mismatch repair-deficient (dMMR, defined by the loss of MLH1, PMS2, MSH2, or MSH6 expression by IHC) biliary tract cancer (PMID: 35680043; NCT02628067). 35680043
PubMed Id Reference Title Details
ESMO Clinical Practice Guidelines Full reference...
(35680043) Pembrolizumab in microsatellite instability high or mismatch repair deficient cancers: updated analysis from the phase II KEYNOTE-158 study. Full reference...
(39232586) Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with biliary tract cancer. Full reference...