In this week’s episode, we will review a study that identifies a new modular organization of erythropoiesis and offers a novel strategy to overcome chronic anemias, summarize a study that used data from two large phase three trials to examine the risk of thrombosis in patients with newly diagnosed multiple myeloma, and review the first report of autosomal recessive germline TET2 deficiency, which results in immunodeficiency, autoimmune lymphoproliferation, and lymphoma.