TPO and autoimmune thrombocytopenic purpura: Recombinant human thrombopoietin (rhTPO), a full‐length and glycosylated TPO, had been applied successfully for patients with immune thrombocytopenia (ITP),7, 8 in stem cell mobilization for patients with MM,9 and for patients with solid tumors receiving non‐myeloablative chemotherapy.10