Luspatercept to treat β-thalassemia.

Recently, after years of research often characterized by disappointments and frustrations, finally a new drug impacting on pathological human erythropoiesis has been developed and approved. This drug, luspatercept-aamt (Reblozyl), proved to be effective in both malignant and nonmalignant disease characterized by ineffective erythropoiesis with consequent life-threatening severe anemia. Moreover, for the first time, a medication demonstrated efficacy and effectiveness in β-thalassemia where no other drug, including recombinant human erythropoietin, showed effectiveness in improving anemia. Despite recent impressive advances in understanding human normal and abnormal erythropoiesis, there are few new drugs and limited pharma research focusing on ineffective erythropoiesis. This review will discuss recent advances in understanding normal and pathological erythropoiesis that represent the background to discuss pharmacology, toxicology, efficacy, safety and effectiveness of this new drug for the treatment of human β-thalassemia.

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