The diagnosis of MYH9‐RD requires skilled laboratory investigations, including the correct assessment of the degree of thrombocytopenia, made difficult by the abnormal size of platelets, the identification of macrothrombocytes, and the determination of the presence of Döhle‐like inclusion bodies in neutrophils on a blood smear (Balduini et al., 2003). This evidence concerns the gene MYH9 and Thrombocytopenia.