CACNA1A

Highest pathogenic variant AF is 0.000116978495

Gene type

protein_coding

Transcript type

protein_coding

Transcript

ENST00000360228

Coding exons

47

Length

417549

Individuals with no LoFs

124643

Homozygous LoFs

0

Heterozygous LoFs

12

Defined

124655

p

0.0000481

Function

FUNCTION: Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1A gives rise to P and/or Q-type calcium currents. P/Q-type calcium channels belong to the 'high-voltage activated' (HVA) group and are specifically blocked by the spider omega-agatoxin-IVA (AC P54282) (By similarity). They are however insensitive to dihydropyridines (DHP). {ECO:0000250|UniProtKB:P54282, ECO:0000269|PubMed:10049321, ECO:0000269|PubMed:10753886, ECO:0000269|PubMed:11723274, ECO:0000269|PubMed:15293273, ECO:0000269|PubMed:19232643, ECO:0000269|PubMed:24836863, ECO:0000269|PubMed:26716990}.;

Disease

DISEASE: Spinocerebellar ataxia 6 (SCA6) [MIM:183086]: Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA6 is an autosomal dominant cerebellar ataxia (ADCA), mainly caused by expansion of a CAG repeat in the coding region of CACNA1A. There seems to be a correlation between the repeat number and earlier onset of the disorder. {ECO:0000269|PubMed:16325861, ECO:0000269|PubMed:20682717, ECO:0000269|PubMed:29053796, ECO:0000269|PubMed:8988170, ECO:0000269|PubMed:9302278, ECO:0000269|PubMed:9345107}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Migraine, familial hemiplegic, 1 (FHM1) [MIM:141500]: A subtype of migraine with aura associated with ictal hemiparesis and, in some families, cerebellar ataxia and atrophy. Migraine is a disabling symptom complex of periodic headaches, usually temporal and unilateral. Headaches are often accompanied by irritability, nausea, vomiting and photophobia, preceded by constriction of the cranial arteries. Migraine with aura is characterized by recurrent attacks of reversible neurological symptoms (aura) that precede or accompany the headache. Aura may include a combination of sensory disturbances, such as blurred vision, hallucinations, vertigo, numbness and difficulty in concentrating and speaking. {ECO:0000269|PubMed:10408532, ECO:0000269|PubMed:11409427, ECO:0000269|PubMed:11439943, ECO:0000269|PubMed:15032980, ECO:0000269|PubMed:18400034, ECO:0000269|PubMed:24836863, ECO:0000269|PubMed:26716990, ECO:0000269|PubMed:28900389, ECO:0000269|PubMed:8898206}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Episodic ataxia 2 (EA2) [MIM:108500]: An autosomal dominant disorder characterized by acetozolamide-responsive attacks of ataxia, migraine-like symptoms, interictal nystagmus, and cerebellar atrophy. {ECO:0000269|PubMed:10408533, ECO:0000269|PubMed:10987655, ECO:0000269|PubMed:11176968, ECO:0000269|PubMed:11723274, ECO:0000269|PubMed:12420090, ECO:0000269|PubMed:14718690, ECO:0000269|PubMed:15173248, ECO:0000269|PubMed:15293273, ECO:0000269|PubMed:18602318, ECO:0000269|PubMed:19232643, ECO:0000269|PubMed:20129625, ECO:0000269|PubMed:21696515, ECO:0000269|PubMed:8898206, ECO:0000269|PubMed:9302278}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Epileptic encephalopathy, early infantile, 42 (EIEE42) [MIM:617106]: A form of epileptic encephalopathy, a heterogeneous group of severe childhood onset epilepsies characterized by refractory seizures, neurodevelopmental impairment, and poor prognosis. Development is normal prior to seizure onset, after which cognitive and motor delays become apparent. EIEE42 inheritance is autosomal dominant. {ECO:0000269|PubMed:27250579, ECO:0000269|PubMed:27476654}. Note=The disease is caused by mutations affecting the gene represented in this entry.;