Rethinking Molecular Profiling Post First-Line Osimertinib.

Gupta, Komal; Tan, Daniel S W; Hoo, Regina · Clin Cancer Res · 2026

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Abstract

A recent article presents the largest histo-genomic characterisation of first-line osimertinib resistance from ORCHARD study. Dual-modality tissue and plasma sequencing detected resistance alterations in 87% and polyclonal mechanisms in 46%, highlighting the complexity of post-osimertinib biology and raising questions about targeted versus broadly acting regimens in the post-EGFR TKI setting.