MedGen

Spermatogenic failure-57 (SPGF57) is characterized by male infertility due to error-prone meiosis of germ cells and spermatogenic arrest at the late pachytene stage (Nagirnaja et al., 2021). For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Any azoospermia in which the cause of the disease is a mutation in the TEX11 gene. [from MONDO]

Any azoospermia in which the cause of the disease is a mutation in the SYCE1 gene. [from MONDO]

Spermatogenic failure-50 (SPGF50) is characterized by male infertility due to azoospermia resulting from meiotic arrest at prophase I (Yang et al., 2018). For a discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Spermatogenic failure-60 (SPGF60) is characterized by male infertility due to nonobstructive azoospermia. Testicular biopsy shows maturation arrest before the pachytene stage (Krausz et al., 2020). For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Spermatogenic failure-73 (SPGF73) is characterized by male infertility, resulting from nonobstructive azoospermia due to meiotic arrest (Li et al., 2022). For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Spermatogenic failure-48 (SPGF48) is characterized by male infertility due to a variable spectrum of severely impaired spermatogenesis, primarily at meiosis and resulting in azoospermia. However, sparse postmeiotic germ cell development and retrieval of sperm in some cases has been reported (Wyrwoll et al., 2020). For a discussion of genetic heterogeneity of spermatogenic failure, see 258150. [from OMIM]

Spermatogenic failure-30 (SPGF30) is characterized by male infertility due to nonobstructive azoospermia or cryptozoospermia. The few sperm that have been observed are immotile and have small heads. Testicular histology in azoospermic patients shows incomplete maturation arrest, with a Sertoli cell-only pattern in some areas (Arafat et al., 2017). For a discussion of genetic heterogeneity of spermatogenic failure, see 258150. [from OMIM]

Spermatogenic failure-59 (SPGF59) is characterized by male infertility due to nonobstructive azoospermia. Testicular biopsy shows maturation arrest (Salas-Huetos et al., 2021). For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Spermatogenic failure-74 (SPGF74) is characterized by nonobstructive azoospermia and male infertility due to complete meiotic arrest at the spermatocyte zygotene or pachytene stage. Some men exhibit reduced testicular volume and/or reduced testosterone level (Wyrwoll et al., 2022). For a general phenotypic description and discussion of genetic heterogeneity of spermatogenic failure, see SPGF1 (258150). [from OMIM]

Maturation arrest (MA) is defined as germ cells that fail to complete maturation. Uniform MA is characterized by spermatogenic arrest at the same stage of spermatogenesis throughout the seminiferous tubules. MA is subcategorized into early MA, in which only spermatogonia or spermatocytes are found, and late MA, in which spermatids are detected without spermatozoa. [from HPO]