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Phenotypes Associated with This Genotype
Genotype
MGI:3805581
Allelic
Composition		 Erbb2tm8.1(Erbb2)Mul/Erbb2+
Genetic
Background		 involves: 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erbb2tm8.1(Erbb2)Mul mutation (0 available); any Erbb2 mutation (57 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
reproductive system
reproductive system phenotype ( J:89255 )
N
• mammary gland morphology is indistinguishable from wild-type

nervous system
nervous system phenotype ( J:89255 )
N
• appears to develop normally

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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Funding Information
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Send questions and comments to User Support. 		last database update
01/20/2026
MGI 6.24 		The Jackson Laboratory