Prevalence of Y Chromosome Microdeletion Among Mongolian Infertile Men With Azoospermia and Severe Oligozoospermia

Abstract Backgound: Y chromosome microdeletions are the second most common genetic causes in male infertility. The aim of the present study was to reveal the patterns of Y chromosome microdeletions among Mongolian infertile men. Method: A descriptive study was performed to 75 infertile men during February 2017 to December 2018. Y chromosome microdeletions were identified by PCR. Semen parameters, hormonal levels, testis biopsy were determined. All collected data were evaluated with Statistical Package for Social Sciences (SPSS, version 22.0).Results: Among 75 infertile men, 2 cases of Y chromosome microdeletions were determined (2.66%). The first case had AZFa complete deletion and the other one had AZFc partial deletion. The azoospermia patient with AZFa complete deletion had Sertoli cell only syndrome in the testis biopsy, FSH 58.0 mIU/ml and LH 12.0 mIU/ml. The azoospermia patient with AZFc partial deletion showed FSH 23.85 mIU/ml and LH 13.01 mIU/ml. Serum FSH level was significantly higher in the Y chromosome microdeletion patients (p value 0.016). Conclusion: This study determined Y chromosome microdeletion among Mongolian infertile men to be at 2.66%. Our results showed FSH level is the best predictor of a successful TESE. However, best cut off value for FSH was 9.69 mIU/ml with a sensitivity and specificity 85.6% and 83.3% respectively. There is a possibility that sperm retrieval will be difficult from the TESE since the testicular tissue is severely damaged. The findings can be applied to IVF and Assisted Reproductive Techonology, and our results will help clinicians improve treatment management for Mongolian infertile couples.