| Primary Identifier | MGI:1931124 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Hesx1 |
| Inheritance Mode | Recessive | Transmission | Germline |
| Strain of Origin | 129P2/OlaHsd | Is Recombinase | false |
| Is Wild Type | false |
| molecularNote | Deletion of the entire coding region and replacement with a neomycin cassette. |