rs4926244
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Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBA1
The NM_001127222.2(CACNA1A):c.3990-1266A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.214 in 151,980 control chromosomes in the GnomAD database, including 3,811 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: 𝑓 0.21 ( 3811 hom., cov: 31)
Consequence
CACNA1A
NM_001127222.2 intron
NM_001127222.2 intron
Scores
2
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: -0.499
Genes affected
CACNA1A (HGNC:1388): (calcium voltage-gated channel subunit alpha1 A) Voltage-dependent calcium channels 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, and gene expression. Calcium channels are multisubunit complexes composed of alpha-1, beta, alpha-2/delta, and gamma subunits. The channel activity is directed by the pore-forming alpha-1 subunit, whereas, the others act as auxiliary subunits regulating this activity. The distinctive properties of the calcium channel types are related primarily to the expression of a variety of alpha-1 isoforms, alpha-1A, B, C, D, E, and S. This gene encodes the alpha-1A subunit, which is predominantly expressed in neuronal tissue. Mutations in this gene are associated with 2 neurologic disorders, familial hemiplegic migraine and episodic ataxia 2. This gene also exhibits polymorphic variation due to (CAG)n-repeats. Multiple transcript variants encoding different isoforms have been found for this gene. In one set of transcript variants, the (CAG)n-repeats occur in the 3' UTR, and are not associated with any disease. But in another set of variants, an insertion extends the coding region to include the (CAG)n-repeats which encode a polyglutamine tract. Expansion of the (CAG)n-repeats from the normal 4-18 to 21-33 in the coding region is associated with spinocerebellar ataxia 6. [provided by RefSeq, Jul 2016]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -12 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.89).
BA1
?
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.293 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CACNA1A | NM_001127222.2 | c.3990-1266A>G | intron_variant | ENST00000360228.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CACNA1A | ENST00000360228.11 | c.3990-1266A>G | intron_variant | 1 | NM_001127222.2 |
Frequencies
GnomAD3 genomes ? AF: 0.214 AC: 32448AN: 151862Hom.: 3807 Cov.: 31
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We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? AF: 0.214 AC: 32488AN: 151980Hom.: 3811 Cov.: 31 AF XY: 0.215 AC XY: 15971AN XY: 74292
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761
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3478
ClinVar
Not reported inComputational scores
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Name
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at