chr16-1220875-G-A

Position:

chr16-1220875-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_021098.3(CACNA1H):c.6943G>A(p.Gly2315Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000314 in 1,612,514 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00032 ( 0 hom. )

Consequence

CACNA1H
NM_021098.3 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -1.88

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.054529876).

BP6

Variant 16-1220875-G-A is Benign according to our data. Variant chr16-1220875-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 460182.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000283 (43/152092) while in subpopulation EAS AF= 0.00135 (7/5170). AF 95% confidence interval is 0.000635. There are 0 homozygotes in gnomad4. There are 19 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 43 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1H	NM_021098.3 linkuse as main transcript	c.6943G>A	p.Gly2315Ser	missense_variant	35/35	ENST00000348261.11	NP_066921.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA1H	ENST00000348261.11 linkuse as main transcript	c.6943G>A	p.Gly2315Ser	missense_variant	35/35	1	NM_021098.3	ENSP00000334198	P4	O95180-1

Frequencies

GnomAD3 genomes

AF:

0.000283

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00135

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000499

AC:

124

AN:

248284

Hom.:

AF XY:

0.000481

AC XY:

AN XY:

135030

show subpopulations

Gnomad AFR exome

AF:

0.000130

Gnomad AMR exome

AF:

0.000464

Gnomad ASJ exome

AF:

0.00210

Gnomad EAS exome

AF:

0.00156

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000463

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.000318

AC:

464

AN:

1460422

Hom.:

Cov.:

AF XY:

0.000299

AC XY:

217

AN XY:

726502

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000358

Gnomad4 ASJ exome

AF:

0.00149

Gnomad4 EAS exome

AF:

0.00118

Gnomad4 SAS exome

AF:

0.000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000282

Gnomad4 OTH exome

AF:

0.000447

GnomAD4 genome

AF:

0.000283

AC:

AN:

152092

Hom.:

Cov.:

AF XY:

0.000256

AC XY:

AN XY:

74294

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.00135

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.000396

Hom.:

Bravo

AF:

0.000344

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000612

AC:

ExAC

AF:

0.000505

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.00101

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 22, 2023

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

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

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 22, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.27

CADD

Benign

0.092

DANN

Benign

0.41

DEOGEN2

Benign

0.10

T;.;.;.

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.55

T;T;T;.

M_CAP

Pathogenic

0.80

MetaRNN

Benign

0.055

T;T;T;T

MetaSVM

Uncertain

-0.091

MutationAssessor

Benign

0.34

N;.;.;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.39

N;.;N;N

REVEL

Uncertain

0.32

Sift

Benign

0.46

T;.;T;T

Sift4G

Benign

0.46

T;.;T;T

Polyphen

0.0

B;.;B;B

Vest4

0.045

MVP

0.72

ClinPred

0.0024

GERP RS

-3.5

Varity_R

0.075

gMVP

0.085

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

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