Selinexor-induced thrombocytopenia results from inhibition of thrombopoietin signaling in early megakaryopoiesis

Author:

Machlus Kellie R.1ORCID,Wu Stephen K.1,Vijey Prakrith1,Soussou Thomas S.1,Liu Zhi-Jian23,Shacham Eran4,Unger T. J.4,Kashyap Trinayan4,Klebanov Boris4,Sola-Visner Martha23,Crochiere Marsha4,Italiano Joseph E.15,Landesman Yosef4

Affiliation:

1. Division of Hematology, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA;

2. Department of Pediatrics, Harvard Medical School, Boston, MA;

3. Division of New Born Medicine, Boston Children's Hospital, Boston, MA;

4. Karyopharm Therapeutics, Newton, MA; and

5. Vascular Biology Program, Department of Surgery, Boston Children's Hospital, Boston, MA

Abstract

Key Points XPO1 blockade causes thrombocytopenia by inhibiting TPO signaling and blocking the differentiation of stem cells into megakaryocytes. Selinexor-induced thrombocytopenia is reversible when TPO agonists are administered in the absence of selinexor (drug holiday).

Publisher

American Society of Hematology

Subject

Cell Biology,Hematology,Immunology,Biochemistry

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