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Phenotypes Associated with This Genotype
Genotype
MGI:4438213
Allelic
Composition		 Phox2btm3.1Jbr/Phox2btm3.1Jbr
Tg(Pou3f4-cre)32Cren/0
Genetic
Background		 involves: 129S2/SvPas * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phox2btm3.1Jbr mutation (2 available); any Phox2b mutation (23 available)
Tg(Pou3f4-cre)32Cren mutation (0 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
nervous system
nervous system phenotype ( J:157532 )
N
• despite the absence of visceral or branchial motoneurons, the main trunk of the facial nerve is present
abnormal motor neuron morphology ( J:157532 )
• visceromotor neurons are not produced
• absence of visceral or branchial motoneurons

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
12/30/2025
MGI 6.24 		The Jackson Laboratory