Differences in failure patterns according to the EGFR mutation status after proton beam therapy for early stage non-small cell lung cancer.

Nakamura, Masaki; Kageyama, Shun-Ichiro; Udagawa, Hibiki; Zenke, Yoshitaka; Yoh, Kiyotaka; Niho, Seiji; Hojo, Hidehiro; Motegi, Atsushi et al. · Radiother Oncol · 2020

retrospective_cohort · Level III

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Abstract

We analyzed 135 patients (including 27 EGFR-mutant and 29 EGFR-wild) with T1-3N0M0 non-squamous NSCLC treated by PBT. Considering the 3-year cumulative incidence, the EGFR-mutant group showed a significantly lower infield failure rate (9% vs 27%, p = 0.02) and higher out-of-field failure rate (67% vs 40%, p = 0.02) than the EGFR-wild group.

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