| Namespace | disease_ontology | Obsolete | false |
| description | A spermatogenic failure characterized by nonobstructive azoospermia or oligozoospermia, immotile sperm, and sperm acrosome and head-neck junction abnormalities that has_material_basis_in homozygous or compound geterozygous mutation in the SPINK2 gene on chromosome 4q12. |
