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Cryptorchidism is the most common disorder of sex development in dogs. It describes a failure of one or both testes to descend into the scrotum in due time. It is a heritable multifactorial disease. In this work, selected dogs of a german sheep poodle breed were sequenced with nanopore sequencing and subsequently examined for genetic variations correlating with cryptorchidism. The relationships of the studied dogs were also analyzed and visually processed.
Cryptorchidism describes a disease, in which one or both testes do not descend into the scrotum properly. With a prevalence of up to 10%, cryptorchidism is one of the most common birth defects of the male genital tract. Despite its associated health risks and accompanying economic damage, resulting from surgery and losses in breeding, studies on canine cryptorchidism and its causes are relatively rare. In this study a relational database for genetic causes of cryptorchidism was established and used as a basis for the identification of candidate genes. Associated regions were analysed by nanopore sequencing with the goal to identify genetic variants correlated with cryptorchidism in German Sheep Poodle.