Genetic disorders and male infertility
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Authors
Kuroda, Shinnosuke
Usui, Kimitsugu
Sanjo, Hiroyuki
Takeshima, Teppei
Kawahara, Takashi
Uemura, Hiroji
Yumura, Yasushi
Issue Date
2020-06-27
Type
Article
Language
en_US
Keywords
Male Infertility , Sex Chromosome Aberrations , Klinefelter Syndrome , Genetic disorder
Alternative Title
Abstract
Background: At present, one out of six couples is infertile, and in 50% of cases, infertility is attributed to male infertility factors. Genetic abnormalities are found in 10%-20% of patients showing severe spermatogenesis disorders, including non-obstructive azoospermia.
Methods: Literatures covering the relationship between male infertility and genetic disorders or chromosomal abnormalities were studied and summarized.
Main findings results: Genetic disorders, including Klinefelter syndrome, balanced reciprocal translocation, Robertsonian translocation, structural abnormalities in Y chromosome, XX male, azoospermic factor (AZF) deletions, and congenital bilateral absence of vas deferens were summarized and discussed from a practical point of view. Among them, understanding on AZF deletions significantly changed owing to advanced elucidation of their pathogenesis. Due to its technical progress, AZF deletion test can reveal their delicate variations and predict the condition of spermatogenesis. Thirty-nine candidate genes possibly responsible for azoospermia have been identified in the last 10 years owing to the advances in genome sequencing technologies.
Conclusion: Genetic testing for chromosomes and AZF deletions should be examined in cases of severe oligozoospermia and azoospermia. Genetic counseling should be offered before and after genetic testing.
Description
Citation
Kuroda S, Usui K, Sanjo H, Takeshima T, Kawahara T, Uemura H, Yumura Y. Genetic disorders and male infertility. Reprod Med Biol. 2020 Jun 27;19(4):314-322. doi: 10.1002/rmb2.12336. PMID: 33071633; PMCID: PMC7542010.
Publisher
Reproductive medicine and biology