HYAL2 and breast cancer: In the gene of HYAL2, HYAL2_CpG_4 was correlated with age only in the controls (Spearmen rho = 0.18, p = 0.037; Supplementary Table 3), whereas HYAL2_CpG_2 and HYAL2_CpG_3 were inversely correlated with age only in the BC cases (p < 0.05; Supplementary Table 3).