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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Erbb2tm2Mul
targeted mutation 2, William Muller
MGI:2179519
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Erbb2tm2Mul/Erbb2tm2Mul involves: 129S1/Sv * 129X1/SvJ * BALB/c MGI:3621735


Genotype
MGI:3621735
hm1
Allelic
Composition		 Erbb2tm2Mul/Erbb2tm2Mul
Genetic
Background		 involves: 129S1/Sv * 129X1/SvJ * BALB/c
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erbb2tm2Mul mutation (0 available); any Erbb2 mutation (57 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
nervous system
abnormal paravertebral ganglion morphology ( J:74283 )
• exhibit a 24-hour delay in sympathetic chain ganglia development

cardiovascular system
cardiovascular system phenotype ( J:74283 )
N
• embryos are normal in development of the heart and heart trabeculae and are viable




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
01/06/2026
MGI 6.24 		The Jackson Laboratory