Non-obstructive azoospermia (NOA) is the most severe form of male infertility and typically incurable. Defining the genetic basis of NOA has proven chal lenging, and the most advanced classification of NOA subforms is not based on genetics, but simple description of testis histology. In this study, we exome sequenced over 1000 clinically diagnosed NOA cases and identified a plausible recessive Mendelian cause i...
Study question: What is the load, distribution and added clinical value of secondary findings (SFs) identified in exome sequencing (ES) of patients with non-obstructive azoospermia (NOA)? Summary answer: One in 28 NOA cases carried an identifiable, medically actionable SF. What is known already: In addition to molecular diagnostics, ES allows assessment of clinically actionable disease-related gene variants tha...
Background: Azoospermia, the most severe form of male infertility, affects approximately 1% of men worldwide and in the great majority of the cases the etiology of the disease remains unidentified. Given the large number of genes involved in spermatogenesis it is likely that a proportion of cases of idiopathic azoospermia have a genetic basis. We have previously described, using SNP arrays, an excess of low fre...