Von Willebrand Disease (VWD), Type 3

This is a first-in-human (FIH), Phase 1/2, 3-part open-label, dose escalation, safety, tolerability, pharmacokinetic (PK), pharmacodynamic (PD), and efficacy study evaluating HMB-002 in participants with VWD. Part A of the study involves a single ascending dose (SAD) regimen design to establish safety, tolerability, PK, and PD effect. In Part B of the study, the safety and tolerability of repeat dosing will be established prior to cohort expansion to explore efficacy. Part C will evaluate the safety, PK, and PD of a single concomitant dose of HMB-002 and factor concentrate with Type 3 VWD or Type 1 VWD with low residual VWF and FVIII who use factor concentrate as prophylaxis.

The purpose of this screening study is to accumulate information regarding bleeding events, quality of life, and the social and clinical impact of bleeds in participants with Von Willebrand Disease (VWD). Data from this study will be used to establish baseline bleeding and treatment rates in a population of participants with VWD and act as comparator data for future clinical study outcomes.(e.g. Velora Pioneer)