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Genetic testing in male infertility - reassessing screening thresholds
James L Liu1, Vanessa Peña, Sean A Fletcher
1The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Current Opinion in Urology
|March 25, 2020
Summary
Genetic testing for male infertility identifies abnormalities like Y-chromosome microdeletions. New data suggests lower prevalence in some cases, questioning current screening thresholds for male fertility evaluations.
Area of Science:
- Genetics
- Reproductive Medicine
- Urology
Background:
- Genetic testing is crucial for diagnosing male infertility.
- Abnormalities such as Y-chromosome microdeletions, chromosomal issues, and cystic fibrosis mutations impact male fertility.
- Prevalence of these genetic issues increases with lower sperm counts, peaking in azoospermic men.
Purpose of the Study:
- To review emerging data on the prevalence of genetic abnormalities in male infertility.
- To evaluate if current screening thresholds for genetic testing in male infertility need revision based on new evidence.
Main Methods:
- Literature review of recent studies on genetic abnormalities in male infertility.
- Analysis of prevalence data in oligospermic and azoospermic populations.
- Comparison of current screening thresholds with updated prevalence findings.
Main Results:
- While genetic abnormalities are more common in men with lower sperm concentrations, recent studies indicate a lower prevalence in oligospermic men than previously assumed.
- Azoospermic men still exhibit the highest frequency of genetic abnormalities.
Conclusions:
- Existing screening thresholds for genetic testing in male infertility may require reassessment due to evolving prevalence data.
- Further research is needed to refine diagnostic criteria and optimize genetic testing strategies for male infertility.
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