| Primary Identifier | MGI:4398734 | Allele Type | Targeted |
| Attribute String | Modified regulatory region | Gene | Smn1 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Three nucleotides were inserted into the exon splicing enhancer of exon 7 resulting in the production of a transcript lacking exon 7. |