Correspondingly, Choi’s group found a significant association between top susceptibility loci (chromosomes 4q25 [PITX2], 16q22 [ZFHX3]) and AF recurrence after ablation in a Korean population, despite no top single nucleotide polymorphisms (SNPs) that predicted clinical recurrence after catheter ablation [34]. This evidence concerns the gene ZFHX3 and atrial fibrillation.