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Splenectomy as an effective treatment for macrothrombocytopenia in Takenouchi-Kosaki syndrome.

Shio YamanoAkihiro IguchiKotaro IshikawaAtsushi SakamotoToru UchiyamaKumiko YanagiTadashi KanameShinji KunishimaAkira Ishiguro
Published in: International journal of hematology (2022)
Takenouchi-Kosaki syndrome (TKS) is a rare congenital disease caused by a de novo heterozygous mutation in the CDC42 gene. Its characteristic clinical features are macrothrombocytopenia, developmental delay, dysmorphic facial features, and deafness. Splenectomy has been contraindicated for inherited thrombocytopenia, and there is little information on treatment of macrothrombocytopenia in TKS. In a previously reported case of autoimmune hemolytic anemia (AIHA) with TKS, we observed that AIHA initially resolved with prednisolone, but gradually became refractory to drug therapy. After splenectomy, both anemia and macrothrombocytopenia improved. This is a novel positive effect of splenectomy for thrombocytopenia in TKS, although further studies are required to assess the effectiveness and safety of splenectomy.
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