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Phenotypes Associated with This Genotype
Genotype
MGI:5438218
Allelic
Composition		 Ctnnb1tm1Mmt/Ctnnb1+
Trp53tm1Brn/Trp53+
Tg(Fabp7-cre,-lacZ)3Gtm/0
Genetic
Background		 involves: 129P2/OlaHsd * 129X1/SvJ * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ctnnb1tm1Mmt mutation (0 available); any Ctnnb1 mutation (51 available)
Tg(Fabp7-cre,-lacZ)3Gtm mutation (0 available)
Trp53tm1Brn mutation (20 available); any Trp53 mutation (237 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
neoplasm
increased medulloblastoma incidence ( J:186709 )
• by 11 months, 4% of mice develop WNT-subgroup medulloblastomas

nervous system
increased medulloblastoma incidence ( J:186709 )
• by 11 months, 4% of mice develop WNT-subgroup medulloblastomas

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
01/13/2026
MGI 6.24 		The Jackson Laboratory