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Phenotypes Associated with This Genotype
Genotype
MGI:3044680
Allelic
Composition		 Krastm4Tyj/Kras+
Tg(MMTV-cre)4Mam/0
Genetic
Background		 involves: 129S4/SvJae * FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Krastm4Tyj mutation (11 available); any Kras mutation (69 available)
Tg(MMTV-cre)4Mam mutation (2 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
endocrine/exocrine glands
submandibular gland hyperplasia ( J:89333 )
• submandibular gland hyperplasia is seen in mutant mice

digestive/alimentary system
submandibular gland hyperplasia ( J:89333 )
• submandibular gland hyperplasia is seen in mutant 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
01/20/2026
MGI 6.24 		The Jackson Laboratory