NM_001127222.2:c.3410C>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS2

The NM_001127222.2(CACNA1A):c.3410C>A(p.Pro1137His) variant causes a missense change. The variant allele was found at a frequency of 0.0000162 in 1,544,566 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1137L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

CACNA1A
NM_001127222.2 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 5.35

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

episodic ataxia type 2
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
undetermined early-onset epileptic encephalopathy
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Illumina
developmental and epileptic encephalopathy, 42
Inheritance: AD Classification: STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
migraine, familial hemiplegic, 1
Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
spinocerebellar ataxia type 6
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
benign paroxysmal torticollis of infancy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial or sporadic hemiplegic migraine
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Lennox-Gastaut syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CACNA1A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19751742).

BP6

Variant 19-13286646-G-T is Benign according to our data. Variant chr19-13286646-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1005267.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAdExome4 at 24 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1A	NM_001127222.2 link	c.3410C>A	p.Pro1137His	missense_variant	Exon 20 of 47	ENST00000360228.11	NP_001120694.1	O00555-8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CACNA1A	ENST00000360228.11 link	c.3410C>A	p.Pro1137His	missense_variant	Exon 20 of 47	1	NM_001127222.2	ENSP00000353362.5	O00555-8
CACNA1A	ENST00000638029.1 link	c.3422C>A	p.Pro1141His	missense_variant	Exon 20 of 48	5		ENSP00000489829.1	A0A087WW63
CACNA1A	ENST00000573710.7 link	c.3416C>A	p.Pro1139His	missense_variant	Exon 20 of 47	5		ENSP00000460092.3	A0A1C7CYY9
CACNA1A	ENST00000635727.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 47	5		ENSP00000490001.1	A0A1B0GU81
CACNA1A	ENST00000637769.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 47	1		ENSP00000489778.1	A0A1B0GTN7
CACNA1A	ENST00000636012.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 46	5		ENSP00000490223.1	A0A1B0GUS3
CACNA1A	ENST00000637736.1 link	c.3272C>A	p.Pro1091His	missense_variant	Exon 19 of 46	5		ENSP00000489861.1	A0A1B0GTW2
CACNA1A	ENST00000636389.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 47	5		ENSP00000489992.1	A0A1B0GU74
CACNA1A	ENST00000637432.1 link	c.3422C>A	p.Pro1141His	missense_variant	Exon 20 of 48	5		ENSP00000490617.1	O00555-2
CACNA1A	ENST00000636549.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 48	5		ENSP00000490578.1	B5TYJ1
CACNA1A	ENST00000637927.1 link	c.3416C>A	p.Pro1139His	missense_variant	Exon 20 of 47	5		ENSP00000489715.1	A0A1B0GTI4
CACNA1A	ENST00000635895.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 47	5		ENSP00000490323.1	A0A384DVW2
CACNA1A	ENST00000638009.2 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 47	1		ENSP00000489913.1	O00555-3
CACNA1A	ENST00000637276.1 link	c.3413C>A	p.Pro1138His	missense_variant	Exon 20 of 46	5		ENSP00000489777.1	O00555-5
CACNA1A	ENST00000636768.2 link	n.3413C>A		non_coding_transcript_exon_variant	Exon 20 of 45	5		ENSP00000490190.2	A0A1B0GUP3
CACNA1A	ENST00000713789.1 link	n.3410C>A		non_coding_transcript_exon_variant	Exon 20 of 47			ENSP00000519091.1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151924

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000261

AC:

AN:

191438

AF XY:

0.0000392

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000247

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000112

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000172

AC:

AN:

1392642

Hom.:

Cov.:

AF XY:

0.0000219

AC XY:

AN XY:

685316

show subpopulations

African (AFR)

AF:

0.0000320

AC:

AN:

31294

American (AMR)

AF:

0.00

AC:

AN:

35476

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21472

East Asian (EAS)

AF:

0.0000512

AC:

AN:

39088

South Asian (SAS)

AF:

0.00

AC:

AN:

75422

European-Finnish (FIN)

AF:

0.0000201

AC:

AN:

49770

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5386

European-Non Finnish (NFE)

AF:

0.0000167

AC:

AN:

1077410

Other (OTH)

AF:

0.0000349

AC:

AN:

57324

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.523

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151924

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74208

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41358

American (AMR)

AF:

0.00

AC:

AN:

15262

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4794

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67962

Other (OTH)

AF:

0.00

AC:

AN:

2080

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000250

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Episodic ataxia type 2;C4310716:Developmental and epileptic encephalopathy, 42

Benign:1

Dec 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.094

BayesDel_noAF

Uncertain

-0.080

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.44

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

Eigen

Benign

-0.20

Eigen_PC

Benign

0.016

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.84

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

M_CAP

Pathogenic

0.31

MetaRNN

Benign

0.20

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

MetaSVM

Uncertain

0.34

MutationAssessor

Benign

1.4

.;.;.;.;L;.;.;.;.;.;.;.;L;.;.

PhyloP100

5.3

PrimateAI

Uncertain

0.56

PROVEAN

Uncertain

-2.8

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

REVEL

Benign

0.27

Sift

Uncertain

0.0010

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

Sift4G

Benign

0.073

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

Vest4

0.48

MutPred

0.21

.;.;Loss of glycosylation at P1138 (P = 0.0032);Loss of glycosylation at P1138 (P = 0.0032);Loss of glycosylation at P1138 (P = 0.0032);.;Loss of glycosylation at P1138 (P = 0.0032);.;.;Loss of glycosylation at P1138 (P = 0.0032);Loss of glycosylation at P1138 (P = 0.0032);.;Loss of glycosylation at P1138 (P = 0.0032);.;Loss of glycosylation at P1138 (P = 0.0032);

MVP

0.75

MPC

0.095

ClinPred

0.70

GERP RS

5.1

Varity_R

0.29

gMVP

0.47

Mutation Taster

=84/16

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over