19-13207434-C-T

Position:

chr19-13207434-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_001127222.2(CACNA1A):c.7400G>A(p.Arg2467Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 1,519,784 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

CACNA1A
NM_001127222.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.287

Variant links:

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]

CACNA1A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CACNA1A. . Gene score misZ 5.7845 (greater than the threshold 3.09). Trascript score misZ 3.9354 (greater than threshold 3.09). GenCC has associacion of gene with benign paroxysmal torticollis of infancy, developmental and epileptic encephalopathy, 42, undetermined early-onset epileptic encephalopathy, episodic ataxia type 2, familial or sporadic hemiplegic migraine, spinocerebellar ataxia type 6, Lennox-Gastaut syndrome, migraine, familial hemiplegic, 1.

BP4

Computational evidence support a benign effect (MetaRNN=0.271856).

BS2

High AC in GnomAd4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1A	NM_001127222.2 linkuse as main transcript	c.7400G>A	p.Arg2467Gln	missense_variant	47/47	ENST00000360228.11	NP_001120694.1	O00555-8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CACNA1A	ENST00000360228.11 linkuse as main transcript	c.7400G>A	p.Arg2467Gln	missense_variant	47/47	1	NM_001127222.2	ENSP00000353362.5	O00555-8
CACNA1A	ENST00000638029.1 linkuse as main transcript	c.7418G>A	p.Arg2473Gln	missense_variant	48/48	5		ENSP00000489829.1	A0A087WW63
CACNA1A	ENST00000573710.7 linkuse as main transcript	c.7406G>A	p.Arg2469Gln	missense_variant	47/47	5		ENSP00000460092.3	A0A1C7CYY9
CACNA1A	ENST00000635727.1 linkuse as main transcript	c.7403G>A	p.Arg2468Gln	missense_variant	47/47	5		ENSP00000490001.1	A0A1B0GU81
CACNA1A	ENST00000637769.1 linkuse as main transcript	c.7403G>A	p.Arg2468Gln	missense_variant	47/47	1		ENSP00000489778.1	A0A1B0GTN7
CACNA1A	ENST00000636012.1 linkuse as main transcript	c.7367G>A	p.Arg2456Gln	missense_variant	46/46	5		ENSP00000490223.1	A0A1B0GUS3
CACNA1A	ENST00000637736.1 linkuse as main transcript	c.7262G>A	p.Arg2421Gln	missense_variant	46/46	5		ENSP00000489861.1	A0A1B0GTW2
CACNA1A	ENST00000636389 linkuse as main transcript	c.*486G>A		3_prime_UTR_variant	47/47	5		ENSP00000489992.1	A0A1B0GU74
CACNA1A	ENST00000637432 linkuse as main transcript	c.*612G>A		3_prime_UTR_variant	48/48	5		ENSP00000490617.1	O00555-2
CACNA1A	ENST00000635895 linkuse as main transcript	c.*612G>A		3_prime_UTR_variant	47/47	5		ENSP00000490323.1	A0A384DVW2
CACNA1A	ENST00000638009 linkuse as main transcript	c.*612G>A		3_prime_UTR_variant	47/47	1		ENSP00000489913.1	O00555-3

Frequencies

GnomAD3 genomes

AF:

0.0000463

AC:

AN:

151318

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000727

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000590

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000158

AC:

AN:

126668

Hom.:

AF XY:

0.0000143

AC XY:

AN XY:

70160

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000416

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000168

AC:

AN:

1368466

Hom.:

Cov.:

AF XY:

0.0000163

AC XY:

AN XY:

676518

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000215

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000463

AC:

AN:

151318

Hom.:

Cov.:

AF XY:

0.0000541

AC XY:

AN XY:

73946

show subpopulations

Gnomad4 AFR

AF:

0.0000727

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000590

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000491

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Episodic ataxia type 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center For Human Genetics And Laboratory Diagnostics, Dr. Klein, Dr. Rost And Colleagues

Jan 12, 2017

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Apr 01, 2023

CACNA1A: PP2, PP3 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.043

BayesDel_noAF

Benign

-0.17

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.011

.;.;T;.;.;T;.;T;.;.

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.15

FATHMM_MKL

Benign

0.26

LIST_S2

Uncertain

0.88

D;D;D;D;D;D;.;D;D;D

M_CAP

Pathogenic

0.96

MetaRNN

Benign

0.27

T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.47

PrimateAI

Pathogenic

0.94

PROVEAN

Benign

0.20

.;N;.;.;.;.;.;.;.;.

REVEL

Uncertain

0.29

Sift

Benign

0.28

.;T;.;.;.;.;.;.;.;.

Sift4G

Benign

0.18

T;T;.;T;.;.;.;.;.;.

Vest4

0.13

MutPred

0.34

.;Loss of MoRF binding (P = 0.0169);.;.;.;.;.;.;.;.;

MVP

0.84

MPC

0.55

ClinPred

0.24

GERP RS

2.9

Varity_R

0.097

gMVP

0.20

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over