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Phenotypes Associated with This Genotype
Genotype
MGI:5649288
Allelic
Composition		 Krastm4.1Bbd/Kras+
Genetic
Background		 involves: 129S1/Sv * 129S2/SvPas * 129X1/SvJ * C57BL/6J * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Krastm4.1Bbd mutation (0 available); any Kras mutation (88 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
mortality/aging
premature death ( J:223433 )
• mice exhibit a reduced life span, with an average half-life of 62 weeks

hematopoietic system

immune system

growth/size/body
enlarged spleen ( J:223433 )

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
03/25/2025
MGI 6.24 		The Jackson Laboratory