Association between some Serum Parameters in Iraqi Women with Polycystic Ovary Syndrome and leptin receptor gene polymorphism

Polycystic ovarian syndrome (PCOS) is considered as a complex, heterogeneous disorder that impacts 5-10% of women at reproductive age. This study aimed to evaluate the association of leptin recepter gene polymorphism (Lys109Arg, rs1137100) and some serum parameters with PCOS in of Iraqi women. This case-control study was carried out during the period from July to October, 2022 at Infertility Care and IVF center of Kamal AL-Samaraay Hospital, Baghdad. The study included 120 Iraqi women as a sample size divided into two groups 60 PCOS patients and 60 apparently healthy control. PCOS patients were diagnosed by gynecologists according to Rotterdam criteria. The genotypes of leptin receptor gene at rs137100 SNP were determined by using HRM-PCR. The serum levels of leptin, soluble leptin receptor (sOB-R) and AMH were measured by using Elisa kits. Lipid profile parameters were measured by spin 200 full auto. LH, FSH, testosterone, estradiol, progesterone, TSH, T3 and T4 hormones were measured by cobas E411. Results revealed that BMI values were significantly increased (p≤0.01) in PCOS patients compared to controls (30.21±0.70 versus 24.28±0.617). Serum leptin and sOB-R levels were significantly (p˂0.05) higher in PCOS patients than controls (4303.28±71.55 versus 3854.84 ±213.96 pg /ml and 144.09 ±5.51 versus 122.16 ±7.64 ng/ml respectively). The frequency of AA genotypes was significantly (p˂0.05) lower in PCOS patients than in apparently healthy subjects (33.3 % versus 65.0% respectively) whereas the frequencies of AG and GG genotypes were significantly (p˂0.05) higher in PCOS patients versus controls (53.3% versus 26.6% and 13.4% versus 8.4% respectively).The A allele frequency was higher in apparently healthy subjects than in PCOS women (78.3% versus 60.0% respectively) while G allele frequency was significantly higher in PCOS patients versus controls (80.0% versus 21.7%, respectively). It was concluded that the leptin receptor polymorphism (rs1137100) is strongly linked to an increased risk of developing PCOS. Further, those with the A allele are less likely to develop PCOS.