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Journal Article
Review
Targeting BRCA-mutant biliary tract cancer: Current evidence and future perspectives.
Journal of Digestive Diseases 2023 Februrary
Biliary tract cancers (BTCs) are aggressive tumors of the biliary system, which are often diagnosed at the advanced stage with a dismal prognosis. Among BTC patients, germline or somatic breast cancer-related gene 1/2 (BRCA1/2) mutation has been reported and the use of poly(ADP-ribose) polymerase inhibitor (PARPi) has achieved a certain effect, with no obvious severe side effects. The frequencies and mutated types of BRCA1/2 in advanced BTCs vary among studies. BRCA1 and BRCA2 play distinct roles in the development of BTC regardless of age or gender difference. Surprisingly, some BTC patients with germline BRCA mutation can achieve better therapeutic effects than those with a somatic mutation, and patients who carry BRCA mutation are more likely to benefit from immunotherapy alone or in combination. Herein, we provide an overview of the targeted therapies in BRCA-mutant BTCs, with a particular focus on the differences between germline and somatic BRCA1/2 mutations, as well as review the current status and perspectives.
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