CYBB and atrial fibrillation: AF susceptibility was not significantly affected by ATV treatment (Figure 5A and Supplementary material online, Table S3); among those animals with inducible AF (76% of WT and 93% of NOX2-Tg mice receiving placebo; 81% of WT and 84% NOX2-Tg receiving ATV), the probability of AF induction (Figure 5B) and maximum AF duration (Figure 5C) was similar in all four groups.