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Updated: Jul 17, 2026

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Z-Scores for Assessing Ovarian Reserve in Young Patients Undergoing Fertility Preservation
Published on: October 25, 2024
Female reproductive ageing: current knowledge and future trends
Frank J Broekmans1, Erik A H Knauff, Egbert R te Velde
1Department of Reproductive Medicine and Gynecology, University Medical Center Utrecht, Utrecht, The Netherlands. f.broekmans@umcutrecht.nl
Trends in Endocrinology and Metabolism: TEM
|February 6, 2007
Summary
Delayed childbearing increases female infertility. Ovarian aging, marked by declining follicle numbers and oocyte quality, impacts fertility and leads to menopause. Identifying women with diminished ovarian reserve is crucial.
Area of Science:
- Reproductive biology
- Gerontology
- Genetics
Background:
- Delayed childbearing is linked to reduced family size and increased female subfertility.
- Ovarian aging, characterized by decreased follicle count and oocyte quality, causes natural fecundity loss and menopause.
- The pace of ovarian aging varies significantly among women.
Purpose of the Study:
- To highlight the clinical relevance of identifying women with diminished ovarian reserve for their age.
- To discuss the limitations of current endocrine and imaging tests in predicting pregnancy chances.
- To explore the potential of future genetic discoveries in assessing reproductive lifespan.
Main Methods:
- Review of current understanding of ovarian aging and fertility.
- Analysis of existing endocrine and imaging tests for ovarian reserve.
- Discussion of potential genetic factors influencing ovarian reserve.
Main Results:
- Current tests primarily assess quantitative ovarian reserve, with limited predictive capacity for pregnancy.
- The rate of ovarian aging is highly variable, making age-based assessments challenging.
- Genetic factors are proposed as potential future predictors of reproductive lifespan.
Conclusions:
- Accurate prediction of diminished ovarian reserve is clinically significant.
- Novel genetic insights may offer improved methods for predicting a woman's reproductive lifespan.
- Further research into genetic regulation of ovarian aging is warranted.
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