CFTR and atrial fibrillation: A total of six CFTR variants had AF for the Russian population (n = 1324) in the study by Petrova et al. [6]—rs121908751 (E92K), rs397508686 (L138ins), rs113993960 (F508del), rs121908776 (1677delTA), rs77010898 (W1282X), and hg19::chr7:117138367-117159446 (CFTRdele2,3).