# Risk of diabetes mellitus based on the interactive association between G6PD rs72554664 polymorphism and sex in Taiwan Biobank individuals

## TL;DR

This study explores how a genetic variant in G6PD interacts with sex to influence the risk of type 2 diabetes in a Taiwanese population.

## Contribution

The study reveals a significant sex-specific interaction between G6PD rs72554664 and T2DM risk, particularly in males.

## Key findings

- The TC + TT genotype of rs72554664 is associated with increased T2DM risk (OR 1.95).
- Males with the G6PD rs72554664-T allelic variant show a significantly higher T2DM risk (OR 4.57).
- Sex-specific mechanisms play a role in the interplay between G6PD deficiency and T2DM.

## Abstract

The presence of glucose-6-phosphate dehydrogenase (G6PD) deficiency may increase the risk of type 2 diabetes mellitus (T2DM), with differing prevalence between males and females. Although G6PD deficiency is an X-linked genetic condition, its interaction with sex regarding T2DM risk among the Taiwanese population has not been fully explored. This study aimed to investigate the association between G6PD deficiency and T2DM risk in the Taiwanese population, focusing on the potential influence of sex. Data were obtained from the Taiwan Biobank (TWB) database, involving 85,334 participants aged 30 to 70 years. We used multiple logistic regression analysis to assess the interaction between G6PD rs72554664 and sex in relation to T2DM risk. The T2DM cohort comprised 55.35% females and 44.65% males (p < 0.001). The TC + TT genotype of rs72554664 was associated with an increased risk of T2DM, with an odds ratio (OR) of 1.95 (95% CI: 1.39–2.75), and males showed an OR of 1.31 (95% CI: 1.19–1.44). Notably, the G6PD rs72554664-T allelic variant in hemizygous males significantly elevated the T2DM risk (OR), 4.57; p < 0.001) compared to females with the CC genotype. Our findings suggest that the G6PD rs72554664 variant, in conjunction with sex, significantly affects T2DM risk, particularly increasing susceptibility in males. The association of the G6PD rs72554664-T allelic variant with a higher risk of T2DM highlights the importance of sex-specific mechanisms in the interplay between G6PD deficiency and T2DM.