NM_021098.3:c.1891G>C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_021098.3(CACNA1H):c.1891G>C(p.Gly631Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CACNA1H
NM_021098.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.248

Publications

0 publications found

Variant links:

Genes affected

CACNA1H (HGNC:1395): (calcium voltage-gated channel subunit alpha1 H) This gene encodes a T-type member of the alpha-1 subunit family, a protein in the voltage-dependent calcium channel complex. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization and consist of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. The alpha-1 subunit has 24 transmembrane segments and forms the pore through which ions pass into the cell. There are multiple isoforms of each of the proteins in the complex, either encoded by different genes or the result of alternative splicing of transcripts. Alternate transcriptional splice variants, encoding different isoforms, have been characterized for the gene described here. Studies suggest certain mutations in this gene lead to childhood absence epilepsy (CAE). [provided by RefSeq, Jul 2008]

CACNA1H Gene-Disease associations (from GenCC):

hyperaldosteronism, familial, type IV
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
childhood absence epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
epilepsy, childhood absence, susceptibility to, 6
Inheritance: AD Classification: LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)

CACNA1H links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09676841).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1H	NM_021098.3 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35	ENST00000348261.11	NP_066921.2	O95180-1B3KQH9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CACNA1H	ENST00000348261.11 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35	1	NM_021098.3	ENSP00000334198.7	O95180-1
CACNA1H	ENST00000569107.6 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 34	1		ENSP00000454990.2	H3BNT0
CACNA1H	ENST00000711493.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 34			ENSP00000518778.1
CACNA1H	ENST00000565831.7 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 34	1		ENSP00000455840.1	O95180-2
CACNA1H	ENST00000711450.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35			ENSP00000518762.1
CACNA1H	ENST00000564231.6 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35	1		ENSP00000457555.2	H3BUA8
CACNA1H	ENST00000638323.1 link	c.1852G>C	p.Gly618Arg	missense_variant	Exon 9 of 35	5		ENSP00000492267.1	A0A1W2PR14
CACNA1H	ENST00000562079.6 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 34	1		ENSP00000454581.2	H3BMW6
CACNA1H	ENST00000711438.1 link	c.1852G>C	p.Gly618Arg	missense_variant	Exon 9 of 34			ENSP00000518754.1
CACNA1H	ENST00000711482.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 36			ENSP00000518771.1
CACNA1H	ENST00000711485.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35			ENSP00000518774.1
CACNA1H	ENST00000711455.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 36			ENSP00000518768.1
CACNA1H	ENST00000711483.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 35			ENSP00000518772.1
CACNA1H	ENST00000711456.1 link	c.1891G>C	p.Gly631Arg	missense_variant	Exon 9 of 34			ENSP00000518769.1
CACNA1H	ENST00000621827.2 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 37	6		ENSP00000518766.1
CACNA1H	ENST00000637236.3 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 34	5		ENSP00000492650.2	A0A1W2PS38
CACNA1H	ENST00000639478.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 35	5		ENSP00000491945.1	A0A1W2PQW2
CACNA1H	ENST00000711442.1 link	n.*1338G>C		non_coding_transcript_exon_variant	Exon 8 of 34			ENSP00000518758.1
CACNA1H	ENST00000711448.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 36			ENSP00000518760.1
CACNA1H	ENST00000711449.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 35			ENSP00000518761.1
CACNA1H	ENST00000711451.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 36			ENSP00000518763.1
CACNA1H	ENST00000711452.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 36			ENSP00000518764.1
CACNA1H	ENST00000711453.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 36			ENSP00000518765.1
CACNA1H	ENST00000711484.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 35			ENSP00000518773.1
CACNA1H	ENST00000711486.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 37			ENSP00000518775.1
CACNA1H	ENST00000711487.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 36			ENSP00000518776.1
CACNA1H	ENST00000711488.1 link	n.1891G>C		non_coding_transcript_exon_variant	Exon 9 of 35			ENSP00000518777.1
CACNA1H	ENST00000711442.1 link	n.*1338G>C		3_prime_UTR_variant	Exon 8 of 34			ENSP00000518758.1
CACNA1H	ENST00000640028.1 link	n.1385+506G>C		intron_variant	Intron 9 of 34	5		ENSP00000491488.1	A0A1W2PQ19

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1419608

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

702494

African (AFR)

AF:

0.00

AC:

AN:

32500

American (AMR)

AF:

0.00

AC:

AN:

38754

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25372

East Asian (EAS)

AF:

0.00

AC:

AN:

37034

South Asian (SAS)

AF:

0.00

AC:

AN:

80562

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47896

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5722

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1092910

Other (OTH)

AF:

0.00

AC:

AN:

58858

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Idiopathic generalized epilepsy;C4310756:Hyperaldosteronism, familial, type IV

Uncertain:1

Mar 24, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant has not been reported in the literature in individuals affected with CACNA1H-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 631 of the CACNA1H protein (p.Gly631Arg). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CACNA1H protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.0096

BayesDel_noAF

Benign

-0.25

CADD

Benign

0.59

(source)

DANN

Benign

0.54

DEOGEN2

Benign

0.15

T;.;.;.

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.098

LIST_S2

Benign

0.62

T;T;T;.

M_CAP

Pathogenic

0.40

MetaRNN

Benign

0.097

T;T;T;T

MetaSVM

Benign

-0.29

MutationAssessor

Benign

0.32

N;.;N;N

PhyloP100

-0.25

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.4

N;.;N;N

REVEL

Benign

0.23

Sift

Benign

0.66

T;.;T;T

Sift4G

Benign

0.50

T;.;T;T

Polyphen

0.0040

B;.;B;B

Vest4

0.14

MutPred

0.26

Gain of MoRF binding (P = 0.0148);.;Gain of MoRF binding (P = 0.0148);Gain of MoRF binding (P = 0.0148);

MVP

0.60

ClinPred

0.032

GERP RS

-1.6

Varity_R

0.050

gMVP

0.38

Mutation Taster

=94/6

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over