| Synonym | Reference | Specificity |
| Class I HDACs | Exact | |
| class I HDACs | Exact | |
| class I histone deacetylases | Exact |
| Identifier | Name | Relation |
| HGNC:4853 | HDAC2 | isa |
| HGNC:4854 | HDAC3 | isa |
| HGNC:13315 | HDAC8 | isa |
| HGNC:4852 | HDAC1 | isa |
| Relation | Identifier | Name |
| isa | FPLX:HDAC | HDAC |