Liquid Biopsy in Biliary Tract Cancer: When Tissue is Not Enough.

Au, Lewis; Tie, Jeanne · Clin Cancer Res · 2026

retrospective_cohort · Level III

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Abstract

Circulating tumor DNA (ctDNA) profiling detects actionable genomic alterations in advanced biliary tract cancer faster (8 vs 27 days) and more often (90% vs 50%) than tissue, with high concordance. A recent retrospective study establishes clinical validity and a compelling access case for future prospective ctDNA-directed trials.