2-40178403-C-G

Position:

chr2-40178403-C-G

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_021097.5(SLC8A1):c.1899G>C(p.Glu633Asp) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,613,902 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SLC8A1
NM_021097.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.47

Variant links:

Genes affected

SLC8A1 (HGNC:11068): (solute carrier family 8 member A1) In cardiac myocytes, Ca(2+) concentrations alternate between high levels during contraction and low levels during relaxation. The increase in Ca(2+) concentration during contraction is primarily due to release of Ca(2+) from intracellular stores. However, some Ca(2+) also enters the cell through the sarcolemma (plasma membrane). During relaxation, Ca(2+) is sequestered within the intracellular stores. To prevent overloading of intracellular stores, the Ca(2+) that entered across the sarcolemma must be extruded from the cell. The Na(+)-Ca(2+) exchanger is the primary mechanism by which the Ca(2+) is extruded from the cell during relaxation. In the heart, the exchanger may play a key role in digitalis action. The exchanger is the dominant mechanism in returning the cardiac myocyte to its resting state following excitation.[supplied by OMIM, Apr 2004]

SLC8A1 links:

SLC8A1-AS1 (HGNC:44102): (SLC8A1 antisense RNA 1)

SLC8A1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.10335538).

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC8A1	NM_021097.5 linkuse as main transcript	c.1899G>C	p.Glu633Asp	missense_variant	3/11	ENST00000332839.9
SLC8A1-AS1	NR_038441.1 linkuse as main transcript	n.122-73281C>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC8A1	ENST00000332839.9 linkuse as main transcript	c.1899G>C	p.Glu633Asp	missense_variant	3/11	1	NM_021097.5	P4	P32418-1
SLC8A1-AS1	ENST00000599740.1 linkuse as main transcript	n.74-73281C>G		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

250976

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135638

show subpopulations

Gnomad AFR exome

AF:

0.000308

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1461580

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727092

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.000241

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000283

Hom.:

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 08, 2023

The c.1899G>C (p.E633D) alteration is located in exon 2 (coding exon 2) of the SLC8A1 gene. This alteration results from a G to C substitution at nucleotide position 1899, causing the glutamic acid (E) at amino acid position 633 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.26

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.55

CADD

Benign

DANN

Benign

0.93

DEOGEN2

Benign

0.27

T;.;T

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.17

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.88

.;D;D

M_CAP

Benign

0.0075

MetaRNN

Benign

0.10

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

L;L;L

MutationTaster

Benign

0.95

D;D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-0.50

N;N;N

REVEL

Benign

0.030

Sift

Benign

0.42

T;T;T

Sift4G

Benign

0.56

T;T;T

Polyphen

0.017

B;.;B

Vest4

0.38

MutPred

0.34

Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);Loss of sheet (P = 0.0037);

MVP

0.50

MPC

0.25

ClinPred

0.047

GERP RS

4.5

Varity_R

0.079

gMVP

0.51

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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