Among outpatient dogs, the positive frequency of aCL (98th or 99th percentile cut-off) was significantly higher in Group I (98 %) and subgroup IA (95 %), IB (100 %), and IC (100 %) than in outpatient dogs without thrombocytopenia (Group II) (Tables 2 and 3). This evidence concerns the gene ACLY and Thrombocytopenia.