Phase 1 is a 3+3 dose escalation study to determine the safety and recommended phase 2 dose (RP2D) of MPH966 in patients undergoing allogeneic hematopoietic stem cell transplantation (HCT). We will evaluate up to 4 doses: 60 mg po bid, 120 mg po bid, 180 mg po bid, and 240 mg po bid. Safety, tolerability, and efficacy will be assessed in real time and pharmacokinetics and pharmacodynamics after each dose cohort before escalating to the next cohort.~Phase 2 is a randomized, double-blind, placebo-controlled study to determine the clinical efficacy of MPH966 vs. placebo in preventing acute graft-versus-host disease (GVHD) after HCT, using the RP2D as determined by the phase 1 trial.
The purpose of this study is evaluate the safety and tolerability of MPH966, a neutrophil elastase inhibitor, and its ability to prevent graft-versus-host disease after hematopoietic stem cell transplant.