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Korean Journal of Fertility and Sterility 2004;31(2):133-139.
Published online June 1, 2004.
The Effect of Follicle-Stimulating Hormone Receptor (FSHR) Polymorphism on Outcomes of Controlled Ovarian Hyperstimulation (COH) and In-vitro Fertilization and Embryo Transfer (IVF-ET).
Ji Sung Yoon, Young Min Choi, Kyung Sil Lim, Chang Young Hur, Young Je Kang, Jae Hoon Jung, Won Don Lee, Jin Ho Lim, Kyu Ri Hwang, Byung Chul Jee, Seung Yup Ku, Chang Suk Suh, Seok Hyun Kim, Jung Gu Kim, Shin Yong Moon
1Department of Obstetrics and Gynecology, Maria Infertility Hospital, Korea.
2Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
3Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.
Abstract
OBJECTIVE
To investigate the association of FSH receptor (FSHR) polymorphism at position 680 with outcomes of controlled ovarian hyper-stimulation for IVF-ET in Korean women. Design: Genetic polymorphism analysis. MATERIALS AND METHODS: The FSHR polymorphism was analyzed by PCR-RFLP in 172 ovulatory women below the age of 40 year. Patients with polycystic ovary syndrome, endometriosis, or previous history of ovarian surgery were excluded. RESULTS: Genotype distribution was 41.9% for the Asn/Asn, 47.7% for the Asn/Ser, and 10.5% for the Ser/Ser FSHR genotype group. There was no difference in age of subjects and infertility diagnosis between genotype groups. When the patients were grouped according to their FSHR genotype, the basal levels of FSH (day 3) were significantly different among the three groups (6.0+/-0.3 IU/L (mean+/-SEM), 5.8+/-0.3 IU/L, and 8.6+/-1.2 IU/L for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively, p=0.002). The Ser/Ser group showed a higher total doses of gonadotropins required to achieve ovulation induction, and a lower serum estradiol levels at the time of hCG administration compared with other two groups, but the differences were of no statistical significance. The numbers of oocytes retrieved were significantly different among the three groups (8.6+/-0.8, 9.9+/-0.6, and 6.3+/-0.9, for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively, p=0.049). Clinical pregnancy rates were 42.4%, 25.9%, and 29.4% for the Asn/Asn, Asn/Ser, and Ser/Ser groups, respectively. CONCLUSION: Homozygous Ser/Ser genotype of FSHR polymorphism at position 680 was associated with decreased ovarian response to gonadotropin stimulation for IVF-ET.
Key Words: FSH receptor; Polymorphism; IVF-ET; Controlled ovarian hyperstimulation (COH)


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