The incidence of AICH linked to rivaroxaban, another oral factor Xa inhibitor, in the ROCKET-AF (Rivaroxaban Once-daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation) study was 0.49%; that of warfarin was 0.74% (P < 0.05) [31]. The gene discussed is F10; the disease is stroke disorder.