ANKRD26 and Thrombocytopenia: In this study, thrombocytopenia was found in 12 family members, 10 of which were confirmed to be THC2 carrying c.-128G > T mutation of ANKRD26, the other 2 (the mother I6 and the daughter II13) do not carry this mutation (Table 1), indicating that the thrombocytopenia in the same parentage may be caused by different gene mutations.