These results confirm that platelets have normal volume in ANKRD26-RT (Noris et al, 2011) and substantiate the current classification of MYH9-RD, BSS and ITGA2B/ITGB3-RT as macrothrombocytopenias (Balduini et al, 2011). Here, MYH9 is linked to Macrothrombocytopenia.