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Phenotypes Associated with This Genotype
Genotype
MGI:7541228
Allelic
Composition
Hnrnph2em1Jpat/Y
Genetic
Background
C57BL/6J-Hnrnph2em1Jpat
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hnrnph2em1Jpat mutation (1 available); any Hnrnph2 mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• less than 15% of males live to 8 weeks of age
• mice are born at a lower frequency than expected (36% versus 64% wild-type) indicating partial prental lethality of males

behavior/neurological
• mice show an impairment of balance in the beam walking test
• mice show an impairment of balance and coordination in the beam walking test
• rotarod performance is impaired
• latency to fall from a wire cage top is decreased and grip strength is decreased
• P21 mice exhibit increased susceptibility to audiogenic seizures (bell producing 120-125 dB sosund), with increased incidence and severity of audiogenic seizures
• however, no impairment is seen in optomotor response, hot plate, or scent habituation tests

craniofacial
• males exhibit craniofacial dysmorphology, with a difference in global skull shape based on EDMA
• reduction in skull length at 6 weeks of age
• mice often have domed heads, typically associated with hydrocephalus
• reduction in nose length at 6 weeks of age

growth/size/body
• reduction in nose length at 6 weeks of age

nervous system
• P21 mice exhibit increased susceptibility to audiogenic seizures (bell producing 120-125 dB sosund), with increased incidence and severity of audiogenic seizures
• however, no impairment is seen in optomotor response, hot plate, or scent habituation tests
• 6-week-old and 24-week-old mice have moderate hydrocephalus, with 75% incidence at 6 weeks and 100% incidence at 24 weeks
• however, no evidence of aqueduct blockage or abnormal morphology of cilia on ependymal cells lining the dilated ventricles, or motile ciliary dysfunction in the respiratory system
• no evidence of inflammation in the brain, no changes in central nervous system myelination and no cell loss or altered lamination in the visual, somatosensory, or somatomotor cortex
• cultured cortical neurons show defects in dendritic arborization, with reduced dendrite branch points, dendrite branch levels, and total dendritic lengths that lead to a large reduction in dendritic arbor complexity
• mice show increased delta power and epileptiform activity on the EEG; mice have an increased percentage of time spent exhibiting spiking events during the dark phase

skeleton
• reduction in skull length at 6 weeks of age
• mice often have domed heads, typically associated with hydrocephalus

vision/eye
• increase in interorbital distance at 6 weeks of age


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
10/29/2024
MGI 6.24
The Jackson Laboratory