| Primary Identifier | MGI:2179176 | Allele Type | Targeted |
| Gene | Erbb2 | Transmission | Germline |
| Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> | Is Recombinase | false |
| Is Wild Type | false |
| molecularNote | Exon 1 was targeted with a PGK-neo cassette preceded by a point mutation at lysine 757 (K757M) destroying the kinase activity of the gene product. Homozygous mutant embyros were identified by genotype analysis at E11.5-E13.5. |