There were no significant differences in the frequency of hypercoagulopathies, including antiphospholipid antibodies, protein C/S deficiency, factor V deficiency, factor II mutation, PT 20210, MTHFR, JAK2, thrombocytosis, or hyperhomocisteinemia. The gene discussed is MTHFR; the disease is hyperinsulinemic hypoglycemia, familial, 4.