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Phenotypes Associated with This Genotype
Genotype
MGI:8226383
Allelic
Composition
Krastm4Tyj/Kras+
Scgb1a1tm1(cre)Fjd/Scgb1a1+
Genetic
Background
involves: 129S1/Sv * 129S4/SvJae * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Krastm4Tyj mutation (12 available); any Kras mutation (71 available)
Scgb1a1tm1(cre)Fjd mutation (0 available); any Scgb1a1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• shortened life span, with a median survival time of 10 months and no mice surviving past 12 months of age
• shortened life span due to lung tumors

neoplasm
• isolated small lesions in the lungs are seen in 4- and 6-month-old mice and an increase in lesion size is seen with age
• however, no lesions are seen in other organs, including brain, liver, kidney, intestine, and muscle and no metastases are seen
• lesions are atypical papillary bronchiolar hyperplasia, solid and papillary adenomas, adenomas with atypical cytologic features, atypical papillary bronchiolar hyperplasia adjacent to adenomas, and adenoncarcinoma
• the main lesions are epithelial hyperplasia in the early stage and adenomas in the middle and late stages
• lesions include solid and papillary adenomas and adenomas with atypical cytologic features
• adenomas are predominately of the papillary subtype
• number of adenomas is less than in Krastm4Tyj Scgb1a1tm1.1(cre)Fjd mice but the mean size of adenomas is greater
• adenocarcinomas are only seen in the very late stage

respiratory system
• focal to extensive acidophilic pneumonia is seen surrounding adenomas and adenocarcinomas in 30% of the total lung tumors
• isolated small lesions in the lungs are seen in 4- and 6-month-old mice and an increase in lesion size is seen with age
• however, no lesions are seen in other organs, including brain, liver, kidney, intestine, and muscle and no metastases are seen
• lesions are atypical papillary bronchiolar hyperplasia, solid and papillary adenomas, adenomas with atypical cytologic features, atypical papillary bronchiolar hyperplasia adjacent to adenomas, and adenoncarcinoma
• the main lesions are epithelial hyperplasia in the early stage and adenomas in the middle and late stages
• lesions include solid and papillary adenomas and adenomas with atypical cytologic features
• adenomas are predominately of the papillary subtype
• number of adenomas is less than in Krastm4Tyj Scgb1a1tm1.1(cre)Fjd mice but the mean size of adenomas is greater
• adenocarcinomas are only seen in the very late stage
• lesions include atypical papillary bronchiolar hyperplasia and atypical papillary bronchiolar hyperplasia adjacent to adenomas
• in early stages, epithelial hyperplasia is only seen in bronchioles, not in the alveolar sac area

immune system
• focal to extensive acidophilic pneumonia is seen surrounding adenomas and adenocarcinomas in 30% of the total lung tumors

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
lung cancer DOID:1324 OMIM:211980
OMIM:608935
OMIM:612571
OMIM:612593
OMIM:614210
J:159271


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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last database update
07/22/2025
MGI 6.24
The Jackson Laboratory