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Phenotypes Associated with This Genotype
Genotype
MGI:3774506
Allelic
Composition
Kcna2tm1Tem/Kcna2tm1Tem
Genetic
Background
involves: 129S7/SvEvBrd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kcna2tm1Tem mutation (1 available); any Kcna2 mutation (40 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice exhibit seizures resulting in death by P28

nervous system
• seizures are rare at P17
• mice exhibit seizures resulting in death by P28
• seizures occur during waking or during rapid eye movement sleep
• during seizures mice exhibit an ictal electroencephalography (EEG) pattern and abnormal spiking EEG activity
• during seizures mice exhibit an ictal electroencephalography (EEG) pattern and abnormal spiking EEG activity
• during non rapid eye movement sleep, mice exhibit higher EEG power in the low-frequency range (0.5 to 1.0 Hz) and lower EEG power in the 3.5 to 7 Hz frequency compared to wild-type mice

behavior/neurological
• at P17, mice spend 23% less time in non-rapid eye movement (NREM) sleep, 21% more time in waking and a 10% decrease in rapid eye movement sleep (REM)compared to wild-type mice
• mice spend more time in waking during the light phase wild-type and heterozygous mice
• while the number of episodes of NREM are normal, the duration of NREM is reduced compared to in wild-type mice
• at P19, two mice exhibiting similar brain wave patterns as seen at P17 exhibit a 19% and 15% increase in waking time per 24 hours compared to wild-type and heterozygotes, respectively, and a 30% and 28% decrease in NREM sleep per 24 hours
• seizures are rare at P17
• mice exhibit seizures resulting in death by P28
• seizures occur during waking or during rapid eye movement sleep
• during seizures mice exhibit an ictal electroencephalography (EEG) pattern and abnormal spiking EEG activity

growth/size/body
• while normal for the first 2 weeks of life, by P16 mice are smaller than wild-type


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
04/16/2024
MGI 6.23
The Jackson Laboratory