| Disease ID | Source | Name | Description |
| 206800 | OMIM | Nail disorder, non-syndromic congenital, 4 (NDNC4) | A nail disorder characterized by congenital anonychia or its milder phenotypic variant hyponychia. Anonychia/hyponychia is the absence or severe hypoplasia of all fingernails and toenails without significant bone anomalies. The disease is caused by variants affecting the gene represented in this entry. |