[Show abstract][Hide abstract] ABSTRACT: Purpose:
We sought to determine the usefulness of fragile X mental retardation 1 (FMR1) carrier testing among young infertile women with or without signs of ovarian insufficiency as compared with fertile women.
Three cohorts of women were recruited to determine the cytosine-guanine-guanine (CGG) repeats trinucleotide repeat length in the 5'-untranslated region of the FMR1 gene in lymphocyte DNA. A total of 199 fertile women, who were reported to have conceived within 3 months, were recruited together with 372 infertile women with ongoing menstrual cycles and 48 infertile women with primary ovarian insufficiency. The various ranges of FMR1 CGG repeat lengths among infertile women were compared with those of fertile controls. In infertile women with ongoing menstrual cycles, the serum concentrations of follicle-stimulating hormone, anti-Muellerian hormone, and inhibin B were measured during the early follicular phase.
None of the three categories of FMR1 CGG repeat length expansions (premutation, intermediate range, and high normal range) were more prevalent among infertile women than among fertile women. The CGG repeat length was not correlated with any of the ovarian reserve parameters.
In comparison with a generalized preconception screening strategy, infertility as a criterion, even together with reduced ovarian reserve, is not suitable for identifying a higher proportion of women with expanded FMR1 CGG repeat length.
Full-text · Article · Oct 2013 · Genetics in medicine: official journal of the American College of Medical Genetics
[Show abstract][Hide abstract] ABSTRACT: To study the distribution of a set of polymorphic alleles of genes encoding key regulators of the menstrual cycle in cohorts of women with different levels of fertility.
Prospective cohort study.
Two hundred fertile women, who reported to have conceived within 3 months, 348 women with ongoing menstrual cycles suffering of infertility, and 48 infertile women diagnosed with infertility and premature ovarian failure (POF).
Eleven polymorphisms of genes with known associations with surrogate parameters of female ovarian function were analyzed.
The prevalence of polymorphic alleles in the three distinct cohorts after adjustment for age.
The distributions of the allelic variants were compared with the fertility status of the recruited women. Using age-adjusted logistic regression analysis and the Bonferroni correction for multiple corrections, the CC-allele of the PvuII polymorphic variant in intron 1 of the ESR1 gene was twice as prevalent among women suffering from infertility. None of the other polymorphisms were distributed differently among the three cohorts.
The ESR1-PvuII polymorphism emerges as a potential candidate for the early prediction of infertility due to premature ovarian aging.
Full-text · Article · Jun 2012 · Fertility and sterility