MITF and atrial fibrillation: Additionally, we identified extensive AS events in the skin tissue of Mitf mutant mice, including 97 A3, 85 A5, 101 AF, 42 AL, 8 MX, 44 RI, and 184 SE events (P < 0.05), suggesting AS events may contribute to the pigment distribution patterns in Mitf p.R324del mutation mice.