rs200209920
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Variant summary
Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2
The NM_001127222.2(CACNA1A):c.3564C>T(p.Asn1188=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000936 in 1,613,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.000092 ( 0 hom., cov: 31)
Exomes 𝑓: 0.000094 ( 0 hom. )
Consequence
CACNA1A
NM_001127222.2 synonymous
NM_001127222.2 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.247
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 -17 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.5).
BP6
?
Variant 19-13285196-G-A is Benign according to our data. Variant chr19-13285196-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 446920.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
?
Synonymous conserved (PhyloP=-0.247 with no splicing effect.
BS2
?
High AC in GnomAd4 at 14 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CACNA1A | NM_001127222.2 | c.3564C>T | p.Asn1188= | synonymous_variant | 21/47 | ENST00000360228.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CACNA1A | ENST00000360228.11 | c.3564C>T | p.Asn1188= | synonymous_variant | 21/47 | 1 | NM_001127222.2 |
Frequencies
GnomAD3 genomes ? AF: 0.0000921 AC: 14AN: 152054Hom.: 0 Cov.: 31
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GnomAD3 exomes AF: 0.0000811 AC: 20AN: 246688Hom.: 0 AF XY: 0.0000821 AC XY: 11AN XY: 134060
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GnomAD4 exome AF: 0.0000937 AC: 137AN: 1461652Hom.: 0 Cov.: 32 AF XY: 0.0000784 AC XY: 57AN XY: 727112
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GnomAD4 genome ? AF: 0.0000920 AC: 14AN: 152172Hom.: 0 Cov.: 31 AF XY: 0.0000806 AC XY: 6AN XY: 74400
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ClinVar
Significance: Likely benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Athena Diagnostics | Nov 30, 2016 | - - |
Episodic ataxia type 2;C4310716:Developmental and epileptic encephalopathy, 42 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Nov 08, 2023 | - - |
not provided Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Sep 29, 2020 | - - |
Computational scores
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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