...Phase 1study (NCT02789345) enrolled pts with T790M-positive EGFR-mutant...Fifteen pts remain on study drug. ORR was 76% (19/25), with CR 4% (1/25), PR 72% (18/25), SD 16% (4/25), PD 4% (1/25), and non-evaluable 4% (1/25). DCR was 92%...DOR rate at 6 months was 81.6% (90% CI: 59.0, 92.4)...PFS rate at 6 months was 64.0%...Ram + Osi demonstrated encouraging antitumor activity. The safety profile was consistent with monotherapy for each drug, with no additive toxicities.