Despite the recent advance of consolidation durvalumab in the treatment of unresectable stage III non-small cell lung cancer (NSCLC), not every patient benefits from durvalumab and predictive markers of response have been difficult to identify.We performed a retrospective analysis of patients with unresectable stage III NSCLC treated with consolidation durvalumab following definitive chemoradiation from January 2018 to March 2020.Thirty-six patients with unresectable stage III NSCLC were treated with consolidation durvalumab. Fourteen of these patients had tumor mutations in the ERBB family including 11 EGFR and 3 ERBB2. The ERBB2/EGFR tumor mutation cohort was more likely to be non-smokers; otherwise the two groups were similar in age, sex, PD-L1 expression and type of prior chemotherapy regimen. Patients in the ERBB2/EGFR cohort had a significantly shorter disease free survival compared to the EGFR/ERBB2 wildtype cohort (7.5 months vs NR, p= 0.04).Consolidation durvalumab appears to be less efficacious in patients with ERBB2/EGFR mutant tumors. Future work should seek to evaluate this in the prospective setting and provide insight into the optimal treatment of ERBB2/EGFR-mutant stage III NSCLC.
View details for DOI 10.1016/j.jtho.2020.12.020
View details for PubMedID 33539970