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- W2922044304 abstract "To study if the follicle-stimulating hormone receptor (FSHR) variant asparagine/serine in amino acid 680 (N680S) can predict hypersensitivity to gonadotropins in women undergoing assisted reproduction.In this retrospective study, 586 women undergoing their first in-vitro fertilisation treatment were enroled, and their FSHR N680S genetic variant was analysed. The main outcome measures were number of retrieved oocytes and any grade of ovarian hyperstimulation syndrome (OHSS). Experimental studies were performed on FSHR variants transfected into eukaryotic cells treated with 1-90 IU recombinant follicle-stimulating hormone. The receptors' ability to induce a second messenger 3',5'-cyclic AMP was measured.The proportion of women who developed OHSS was 6% (n=36). None of the women who developed this condition had the homozygous serine variant. The N680S polymorphism in the FSHR was associated with the condition, Ptrend (genotype)=0.004 and Pallelic (alleles)=0.04. Mean oocyte number was 11±6 in women without OHSS and 16±8 in women who developed OHSS (P=0.001), despite exposure to lower total hormonal dose in the latter group. The odds ratio for developing OHSS in carriers of the asparagine allele was 1.7 (95% confidence interval: 1.025-2.839, P=0.04). A higher receptor activity in cells expressing asparagine compared with the serine was also evident at all concentrations of recombinant follicle-stimulating hormone used (P<0.05 for all).This study confirms previous findings regarding higher hormonal sensitivity in carriers of asparagine in the N680S position. These women are at higher risk for OHSS during in-vitro fertilisation. Genetic testing could identify those at highest risk to develop this adverse effect." @default.
- W2922044304 created "2019-03-22" @default.
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- W2922044304 date "2019-07-01" @default.
- W2922044304 modified "2023-10-18" @default.
- W2922044304 title "The N680S variant in the follicle-stimulating hormone receptor gene identifies hyperresponders to controlled ovarian stimulation" @default.
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- W2922044304 doi "https://doi.org/10.1097/fpc.0000000000000374" @default.
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