While no difference was observed between patients with molecularly confirmed MYH9-related platelet disorders (IPF = 43.2%, range 22.4–62.7%) or Bernard-Soulier syndrome (IPF = 38.3%, range 28.3–65.9%), lower IPF values were observed in the remaining patients classified as non-specified hereditary macrothrombocytopenia (IPF = 17.5%, range 4.6–51.7%; P < 0.05). Here, MYH9 is linked to Bernard-Soulier syndrome.