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Phenotypes Associated with This Genotype
Genotype
MGI:5634792
Allelic
Composition
Cacna1atg/Cacna1atg
Genetic
Background
involves: 101 * C3H * C57BL/10 * DBA/2J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cacna1atg mutation (1 available); any Cacna1a mutation (118 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• mutant mice occasionally fall over
• toeing-out of hind feet is often noticeable before the gait becomes abnormal
• mutant mice often lean to one side
• the bodies of mutant mice are held closer to the ground
• Background Sensitivity: mutant mice are recognizeable by 2.5 weeks of age
• due to effects of seizures
• a seizure pattern develops in mutant mice by 3 weeks of age
• preceded by increased running with abrupt directional changes followed by no motor activity and increased respiration
• begin as early as 2 weeks of age as sporadic seizures
• have little effect on life span
• begin as early as 2 weeks of age
• preceded by flattening of the sacral area with spastic abduction and extension of a hind limb

nervous system
• a seizure pattern develops in mutant mice by 3 weeks of age
• preceded by increased running with abrupt directional changes followed by no motor activity and increased respiration
• begin as early as 2 weeks of age as sporadic seizures
• have little effect on life span
• begin as early as 2 weeks of age
• preceded by flattening of the sacral area with spastic abduction and extension of a hind limb

reproductive system
• in both sexes due to impact of the neurological phenotype


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
03/31/2026
MGI 6.24
The Jackson Laboratory