PMID- 37555284 OWN - NLM STAT- MEDLINE DCOM- 20231108 LR - 20240104 IS - 1549-490X (Electronic) IS - 1083-7159 (Print) IS - 1083-7159 (Linking) VI - 28 IP - 11 DP - 2023 Nov 2 TI - Phase I Study of Entinostat, Atezolizumab, Carboplatin, and Etoposide in Previously Untreated Extensive-Stage Small Cell Lung Cancer, ETCTN 10399. PG - 1007-e1107 LID - 10.1093/oncolo/oyad221 [doi] AB - BACKGROUND: CREBBP and EP300 mutations occur at a frequency of 15% and 13%, respectively, in small cell lung cancer (SCLC), and preclinical models demonstrated susceptibility to targeting with HDAC inhibitors. METHODS: Patients with treatment-naive extensive-stage SCLC, ECOG