CUX2 and atrial fibrillation: For CUX2 SNP rs64990029, although no significant allelic association was found for AF, significant genotypic association was identified for AF under both the additive and the dominant models, but not under the recessive model (Pobs = 7.97 × 10−3 under a dominant model; Pobs = 0.02 under an additive model) (Table 3).