spermatogenic failure X-linked spermatogenic failure 1 https://github.com/monarch-initiative/mondo/issues/3633 https://github.com/monarch-initiative/mondo/issues/7409 https://github.com/monarch-initiative/mondo/issues/7693 https://rarediseases.info.nih.gov/diseases/8406/sertoli-cell-only-syndrome https://www.malacards.org/card/spermatogenic_failure_x_linked_1 DOID:0070189 ICD9:752.89 A cause of male infertility characterized by X-linked inheritance in which only Sertoli cells (cells that nurture the immature sperm) line the seminiferous tubules (tubes inside the testicles where sperm develop) and there are not any sperm cells present in the seminiferous tubules. spermatogenic failure, X-linked, type 1 UMLS:C1384583 Del Castillo syndrome Sertoli cell-only syndrome SPGFX1 OMIM:305700 MESH:D054331 MONDO:0056795 GARD:0008406 MEDGEN:235163 NCIT:C168988 SCTID:73465006 Germinal cell aplasia