Objective: To investigate the distribution of the functional polymorphisms in the non-coding regions of folate metabolism-related genes in the reproductive-aged population of Hubei Province.
Methods: Using Sanger sequencing, we examined the polymorphisms of the genes MTR (rs28372871 and rs1131450), MTRR (rs326119) and CBS (rs2850144) in 790 subjects before and during pregnancy from April 2020 to March 2021. We compared the distributions of the four loci between different populations.
Results: The distributions of the four genotypes of rs28372871, rs1131450, rs326119 and rs2850144 all conformed to the Hardy-Weinberg equilibrium (HWE). Statistically significant differences were observed in the polymorphism distribution of rs28372871 between Hubei and Jiangsu (P < 0.05), in that of rs1131450 between Hubei and Shanghai (P < 0.05), and in that of rs2850144 between Hubei and Yazd, Iran (P < 0.01).
Conclusions: This was the first investigation on the distribution of MTR, MTRR and CBS gene polymorphisms in the reproductive-aged population of Hubei Province. The effects of the functional loci in both encoding and non-coding regions of folate metabolism-related genes have to be comprehensively considered so as to formulate an appropriate folate-supplementary protocol.
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