MYH9 and macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss: Recently, it has been shown that mutations in MYH9, the gene encoding for nonmuscle myosin heavy chain IIA (NMMHC-IIA), are responsible for Fechtner syndrome, Epstein syndrome, and other two MTCPs (Sebastian syndrome and May-Hegglin anomaly) without renal, ocular, or hearing defects (Table 1).