The world journal of men's health · 2025
Genetic Testing for Monogenic Forms of Male Infertility Contributes to the Clinical Diagnosis of Men with Severe Idiopathic Male Infertility.
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Podgrajsek Rebeka, Hodzic Alenka, Maver Ales, Stimpfel Martin, Andjelic Aleksander, Miljanovic Olivera, Ristanovic Momcilo, Novakovic Ivana, Plaseska-Karanfilska Dijana, Noveski Predrag, Ostojic Sasa, Grskovic Antun, Buretic-Tomljanovic Alena, Peterlin Borut
Аннотация
PURPOSE: In recent years, many genes have been associated with male infertility; however, testing of monogenic forms has not yet been clinically implemented in the diagnosis of severe forms of idiopathic male infertility, as the diagnostic utility has not been established yet. The aim of this study was therefore to answer if the implementation of genetic testing for monogenic forms of male infertility could contribute to the clinical diagnosis of men with severe forms of idiopathic male infertility.
MATERIALS AND METHODS: Based on the ClinGene curation protocol, we defined a panel of genes with sufficient evidence for the involvement with severe male infertility. We tested the 21-gene panel in a representative multicentric cohort of men with significantly impaired spermatogenesis. We performed whole exome sequencing on 191 infertile men with severe forms of idiopathic male infertility; non-obstructive azoospermia, and severe oligozoospermia (<5 million spermatozoa/mL). The control group consisted of 216 men who fathered a child. DNA was prepared based on the Twist CORE exome protocol and sequenced on the Illumina NovaSeq 6000 platform. Variants were classified using the Association for Clinical Genomic Science (ACGS) Best Practice Guidelines for Variant Classification in Rare Disease 2020.
RESULTS: We identified potential monogenic disease-causing variants in four infertile men. Pathogenic/likely pathogenic variants in STAG3 (c.2776C>T, p.Arg926*; c.2817delG, p.Leu940fs), MSH4 (c.1392delG, p.Ile465fs; c.2261C>T, p.Ser754Leu), TEX15 (c.6848_6849delGA, p.Arg2283fs; c.6271dupA, p.Arg2091fs), and TEX14 (c.1021C>T, p.Arg341*) genes were found.
CONCLUSIONS: In the present multicentric cohort study, a monogenic cause in 2.1% of infertile men was identified. These findings confirm the utility of monogenic testing and suggest the clinical use of monogenic testing for men with severe forms of idiopathic male infertility.
MATERIALS AND METHODS: Based on the ClinGene curation protocol, we defined a panel of genes with sufficient evidence for the involvement with severe male infertility. We tested the 21-gene panel in a representative multicentric cohort of men with significantly impaired spermatogenesis. We performed whole exome sequencing on 191 infertile men with severe forms of idiopathic male infertility; non-obstructive azoospermia, and severe oligozoospermia (<5 million spermatozoa/mL). The control group consisted of 216 men who fathered a child. DNA was prepared based on the Twist CORE exome protocol and sequenced on the Illumina NovaSeq 6000 platform. Variants were classified using the Association for Clinical Genomic Science (ACGS) Best Practice Guidelines for Variant Classification in Rare Disease 2020.
RESULTS: We identified potential monogenic disease-causing variants in four infertile men. Pathogenic/likely pathogenic variants in STAG3 (c.2776C>T, p.Arg926*; c.2817delG, p.Leu940fs), MSH4 (c.1392delG, p.Ile465fs; c.2261C>T, p.Ser754Leu), TEX15 (c.6848_6849delGA, p.Arg2283fs; c.6271dupA, p.Arg2091fs), and TEX14 (c.1021C>T, p.Arg341*) genes were found.
CONCLUSIONS: In the present multicentric cohort study, a monogenic cause in 2.1% of infertile men was identified. These findings confirm the utility of monogenic testing and suggest the clinical use of monogenic testing for men with severe forms of idiopathic male infertility.