Kitirat TechatraisakChenchit ChayachindaThanyarat WongwananurukChongdee DangratSuchada IndhavivadhanaManee RattanachaiyanontWanna ThongnoppakhunMahidol University2018-11-232018-11-232015-01-01Journal of Obstetrics and Gynaecology Research. Vol.41, No.9 (2015), 1412-141714470756134180762-s2.0-84941022825https://repository.li.mahidol.ac.th/handle/20.500.14594/36656© 2015 Japan Society of Obstetrics and Gynecology. Aim To investigate the association of CYP 17 -34T/C polymorphism with insulin resistance (IR) in Thai polycystic ovary syndrome (PCOS). Methods A cross-sectional study was performed on 210 Thai women diagnosed with PCOS. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to analyze CYP17 polymorphism at -34T/C. Student's t-test was used to compare the mean of normally distributed variables between A1/A1 and A2/X. Chi-squared or Fisher's exact tests and OR were used to analyze the association at P < 0.05. Results Out of 210 cases, PCR-RFLP was successful in 199. Mean patient age was 24.4 ± 4.7 years, with body mass index 25.2 ± 6.3 kg/m². There were 65 and 134 women in the A1/A1 genotype group and A2/X genotype group, respectively. The A2/X genotype group was statistically significantly younger and had a strong trend toward overweight/obesity compared with the A1/A1 genotype group. The prevalence of IR according to different methods varied from 15.4% to 70.8% and was not different between the two groups. On subgroup analysis, in the overweight/obese PCOS group, the A2/X genotype was not associated with any indices of IR. Conclusion No significant association between CYP17-34T/C polymorphism and IR was found in Thai PCOS women, although the A2/X genotype group was statistically significantly younger than the A1/A1 genotype group.Mahidol UniversityMedicineArticleSCOPUS10.1111/jog.12733