REEP6 and atrial fibrillation: Pathogenic genes of cases who were judged with “infinity sign” were 3 cases with PRPH2, one case with RP1, one case with REEP6 and one case with USH2A, and those with a broad-banded hyper AF leading edges were 4 cases with PRPH2, one case with RHO, one case with RP1L1 and one cases with USH2A.