rs121908223
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1PM2PP2
The NM_001127222.2(CACNA1A):c.4000A>G(p.Lys1334Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars).
Frequency
Genomes: not found (cov: 32)
Consequence
CACNA1A
NM_001127222.2 missense
NM_001127222.2 missense
Scores
6
7
1
Clinical Significance
Conservation
PhyloP100: 5.31
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 Uncertain_significance. Variant got 5 ACMG points.
PM1
?
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_001127222.2
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, CACNA1A
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CACNA1A | NM_001127222.2 | c.4000A>G | p.Lys1334Glu | missense_variant | 25/47 | ENST00000360228.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CACNA1A | ENST00000360228.11 | c.4000A>G | p.Lys1334Glu | missense_variant | 25/47 | 1 | NM_001127222.2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 29
GnomAD4 exome
Cov.:
29
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: not provided
Submissions summary: Other:1
Revision: no classification provided
LINK: link
Submissions by phenotype
Migraine, familial hemiplegic, 1 Other:1
not provided, no classification provided | literature only | UniProtKB/Swiss-Prot | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D;D;D;D;D;D;.;D;D;D;D;D;D
M_CAP
Pathogenic
D
MetaRNN
Uncertain
D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D;D;D
PrimateAI
Pathogenic
D
Sift4G
Uncertain
D;D;.;.;.;.;.;.;.;.;.;.;.;.;.
Vest4
MutPred
0.50
.;.;Loss of ubiquitination at K1335 (P = 0.0103);Loss of ubiquitination at K1335 (P = 0.0103);Loss of ubiquitination at K1335 (P = 0.0103);.;Loss of ubiquitination at K1335 (P = 0.0103);.;.;Loss of ubiquitination at K1335 (P = 0.0103);Loss of ubiquitination at K1335 (P = 0.0103);.;Loss of ubiquitination at K1335 (P = 0.0103);.;Loss of ubiquitination at K1335 (P = 0.0103);
MVP
MPC
2.6
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at