| Primary Identifier | MGI:2445425 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Pitx2 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exon 4 was replaced with a floxed neomycin selection cassette. Mice harboring this allele were crossed with transgenic mice expressing cre recombinase to generate an Pitx2tm3.1Jfm, which encodes isoforms a and b, but not the heart- and lung-specific c isoform. |