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Phenotypes Associated with This Genotype
Genotype
MGI:3775278
Allelic
Composition		 Gt(ROSA)26Sortm1(Cdkn1b)Dor/Gt(ROSA)26Sortm1(Cdkn1b)Dor
Myl2tm1(cre)Krc/Myl2+
Genetic
Background		 involves: 129/Sv * 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Cdkn1b)Dor mutation (0 available); any Gt(ROSA)26Sor mutation (1062 available)
Myl2tm1(cre)Krc mutation (2 available); any Myl2 mutation (20 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
cardiovascular system
heart hypoplasia ( J:131577 )
• mice exhibit small hearts due to decreased myocardial proliferation
• however, coronary development is normal
thin ventricular wall ( J:131577 )
• the ventricular wall thickness is 54+/-6% of wild-type mice

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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Send questions and comments to User Support. 		last database update
01/06/2026
MGI 6.24 		The Jackson Laboratory