| Label | Id | |
|---|---|---|
| C4AD | 13721 | |
| C4A deficiency | 13721 | |
| complement component 4A deficiency | 13721 | |
| complement component 4A deficiency; C4AD | http://purl.obolibrary.org/obo/MONDO_0013721 | |
| complement component 4a deficiency | 13721 | |
| C4A classic complement early component deficiency | 13721 | |
| classic complement early component deficiency caused by mutation in C4A | 13721 |