Journal of assisted reproduction and genetics · 2025
Genetic insights into non-obstructive azoospermia: Implications for diagnosis and TESE outcomes.
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Sharifi Shahrashoub, Dursun Murat, Şahin Ayla, Turan Serdar, Altun Ayşe, Özcan Özden, Kalkanlı Arif, Çefle Kıvanç, Öztürk Şükrü, Palanduz Şükrü, Kadıoğlu Ateş
Аннотация
BACKGROUND: Non-obstructive azoospermia (NOA) is considered one of the most severe forms of male infertility. Despite the limited range of testicular phenotypes, NOA exhibits considerable genetic heterogeneity. The aim of this study was to uncover the etiopathogenesis of NOA and provide insights into the outcomes of testicular sperm extraction (TESE).
MATERIAL METHOD: To elucidate the potential causes of testicular pathogenesis, a cohort of 61 patients was analyzed. The genetic etiology was assessed using our developed gene panel, based on genes with prior functional studies conducted specifically in the context of testicular characterization.
RESULTS: Our analytical approach, built upon these findings, enabled us to explore the potential genetic causes of NOA and assess their relevance to TESE outcomes. A potential causal defect was identified in 14 genes across a total of 26 individuals (42%). Of these, three genes-MEIOB, TERB1, and USP26-had been previously described in men, while eight genes-SPO11, RBBP7, STS, RBMXL3, ZCCHC13, HUWE1, ESR1, and ABCD1-had been reported in prior studies. Additionally, three genes-CEP85, NAP1L3, and CENPI-had been previously described only in knockout (KO) phenotype studies, and this study represents the first identification of these genes in men.
CONCLUSION: Interestingly, the histological findings of meiotic arrest were strongly linked to genes involved in meiosis, reinforcing the clinical diagnosis of patients in this cohort. Additionally, our study underscores the importance of refining diagnostic strategies that focus on genes associated with testicular phenotypes, which could enhance the accuracy of TESE success predictions.
MATERIAL METHOD: To elucidate the potential causes of testicular pathogenesis, a cohort of 61 patients was analyzed. The genetic etiology was assessed using our developed gene panel, based on genes with prior functional studies conducted specifically in the context of testicular characterization.
RESULTS: Our analytical approach, built upon these findings, enabled us to explore the potential genetic causes of NOA and assess their relevance to TESE outcomes. A potential causal defect was identified in 14 genes across a total of 26 individuals (42%). Of these, three genes-MEIOB, TERB1, and USP26-had been previously described in men, while eight genes-SPO11, RBBP7, STS, RBMXL3, ZCCHC13, HUWE1, ESR1, and ABCD1-had been reported in prior studies. Additionally, three genes-CEP85, NAP1L3, and CENPI-had been previously described only in knockout (KO) phenotype studies, and this study represents the first identification of these genes in men.
CONCLUSION: Interestingly, the histological findings of meiotic arrest were strongly linked to genes involved in meiosis, reinforcing the clinical diagnosis of patients in this cohort. Additionally, our study underscores the importance of refining diagnostic strategies that focus on genes associated with testicular phenotypes, which could enhance the accuracy of TESE success predictions.