CCND2 and breast cancer: A one‐ln unit increase in BPB was associated with an OR of 0.79 (95% CI = 0.68–0.92; CLR = 1.35) for hypermethylated CCND2 promoter‐defined BC and with an OR of 0.97 (95% CI = 0.90–1.05; CLR = 1.17) for hypomethylated CCND2 promoter‐defined BC.