The study will be an open-label, Phase 1b study of R289 to determine tolerability and preliminary efficacy in patients with LR MDS who are relapsed, refractory/resistant, intolerant, or have inadequate response to prior therapies such as erythropoietin (EPO), thrombopoietin (TPO), luspatercept, or hypomethylating agents (HMAs) for MDS.
Phase 1b Study of R289 in Patients with Lower-risk Myelodysplastic Syndromes (LR MDS)