The role of dynamic monitoring of plasma cell-free DNA methylation in predicting pathological response in resectable stage IIB-IIIB non-small cell lung cancer: biomarker analyses from a prospective phase II trial.

ABSTRACT:

Background

Neoadjuvant chemoimmunotherapy does not benefit all non-small cell lung cancer (NSCLC) patients, and reliable biomarkers are urgently needed. We conducted this prospective phase II trial of neoadjuvant chemoimmunotherapy to explore the role of cell-free DNA (cfDNA) features in pathological response assessment.

Methods

Totally, 100 patients with stage IIB-IIIB NSCLC were enrolled and treated with neoadjuvant toripalimab plus chemotherapy for at least 2 cycles. Targeted methylation panel sequencing and whole methylome sequencing were conducted on 195 cfDNA samples collected from 60 patients before each treatment cycle (C0, C1) and before surgery (BS), with subsequent calculations of methylation fragment ratio (MFR) and chromosome aneuploid of featured fragment (CAFF

SUBMITTER: Liu B 

PROVIDER: S-EPMC12587505 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature