Randomly selected 2250 Turkish adults (aged 49.7 ± 11.9 years; 48.6% males) were genotyped for CYP19A1 rs10046 polymorphism using hybridization probes in Real-Time PCR LC480 device.
Distribution of the CYP19A1 rs10046 polymorphism was 28% (n = 630), 48.3 % (n = 1085) and 23.7% (n = 535) for the CC, CT and TT genotypes, respectively, and the T allele frequency was 0.48. In relation to apolipoprotein (apo)B levels, C homozygosity was associated with higher apoB in non-obese females, contrasting to being so in obese males only, and further in postmenopausal females. CC genotype in females was associated in linear regression analysis by 7.2 ± 3.3 mg/dL higher apoB than CT + TT genotypes, independent of age and BMI. Among premenopausal females, insulin levels (p = 0.007), BMI (p = 0.05) and HOMA index (p = 0.034) were higher in C homozygotes than in T-allele carriers. However, CYP19A1 TT genotype contributed to hypertension at an OR 1.80 (95% CI 1.12–2.91), independently of age, BMI and other confounders, in males alone.
The CYP19A1 rs10046 polymorphism is associated with cardiovascular risk factors such as circulating apoB, insulin resistance and hypertension in a sex- and obesity-specific manner.