2-40115488-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_021097.5(SLC8A1):c.2687A>T(p.Asn896Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC8A1 NM_021097.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.04

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

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25192142).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC8A1	NM_021097.5	c.2687A>T	p.Asn896Ile	missense_variant	11/11	ENST00000332839.9
SLC8A1-AS1	NR_038441.1	n.121+10526T>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC8A1	ENST00000332839.9	c.2687A>T	p.Asn896Ile	missense_variant	11/11	1	NM_021097.5	P4
SLC8A1-AS1	ENST00000599740.1	n.74-136196T>A		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2023

The c.2687A>T (p.N896I) alteration is located in exon 10 (coding exon 10) of the SLC8A1 gene. This alteration results from a A to T substitution at nucleotide position 2687, causing the asparagine (N) at amino acid position 896 to be replaced by an isoleucine (I). 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	Uncertain	0.35
BayesDel_addAF	Benign	-0.094	T
BayesDel_noAF	Benign	-0.37
Cadd	Uncertain	25
Dann	Uncertain	0.99
Eigen	Uncertain	0.27
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	0.97	D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.25	T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.49	T
PROVEAN	Uncertain	-3.7	D;D;D;D;D;D;D;D
REVEL	Benign	0.13
Sift	Uncertain	0.0050	D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.054	T;D;D;T;T;D;D;T
Polyphen		0.51	P;P;.;P;P;.;P;P
Vest4		0.28
MutPred		0.49		.;Loss of disorder (P = 0.026);.;.;.;.;Loss of disorder (P = 0.026);.;
MVP		0.41
MPC		1.8
ClinPred		0.98	D
GERP RS		5.9
Varity_R		0.45
gMVP		0.79

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-40342628;