68 patients were treated on Arm A and B, 60 with r/r KMT2Ar or mNPM1 leukemia….The overall response rate (CR+CRh+CRp+CRi/MLFS [ORR]) in the efficacy population (KMT2Ar and mNPM1) was 53% (32/60); the rate of CR+CRh+CRp was 38% (23/60) with a CR/CRh rate of 30% (18/60 [95% CI: 18.8, 43.2])....In SNDX-5613 patients proceeding to transplant, durable remissions occurred across a range of heavily pre-treated patients. In addition to patients achieving CR/CRh, two patients with CRp also had ongoing remissions post-transplant.