Genetic Variant SLC4A8:p.Thr394Met (chr12-51462389-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001039960.3(SLC4A8):c.1181C>T(p.Thr394Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000856 in 1,611,762 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000089 ( 1 hom. )

Consequence

SLC4A8
NM_001039960.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.90

Variant links:

Genes affected

SLC4A8 (HGNC:11034): (solute carrier family 4 member 8) The protein encoded by this gene is a membrane protein that functions to transport sodium and bicarbonate ions across the cell membrane. The encoded protein is important for pH regulation in neurons. The activity of this protein can be inhibited by 4,4'-Di-isothiocyanatostilbene-2,2'-disulfonic acid (DIDS). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

SLC4A8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC4A8	NM_001039960.3 link	c.1181C>T	p.Thr394Met	missense_variant	Exon 10 of 25	ENST00000453097.7	NP_001035049.1	Q2Y0W8-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC4A8	ENST00000453097.7 link	c.1181C>T	p.Thr394Met	missense_variant	Exon 10 of 25	1	NM_001039960.3	ENSP00000405812.2		Q2Y0W8-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000101

AC:

AN:

248460

Hom.:

AF XY:

0.000127

AC XY:

AN XY:

134286

show subpopulations

Gnomad AFR exome

AF:

0.0000619

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000548

Gnomad SAS exome

AF:

0.000269

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000133

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000891

AC:

130

AN:

1459630

Hom.:

Cov.:

AF XY:

0.0000937

AC XY:

AN XY:

726072

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.0000226

Gnomad4 ASJ exome

AF:

0.0000768

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000245

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000900

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152132

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000128

Hom.:

Bravo

AF:

0.0000869

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1181C>T (p.T394M) alteration is located in exon 10 (coding exon 10) of the SLC4A8 gene. This alteration results from a C to T substitution at nucleotide position 1181, causing the threonine (T) at amino acid position 394 to be replaced by a methionine (M). 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

Pathogenic

0.67

BayesDel_addAF

Uncertain

0.080

BayesDel_noAF

Pathogenic

0.17

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.74

.;.;D;.

Eigen

Pathogenic

0.87

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

D;D;D;D

M_CAP

Benign

0.076

MetaRNN

Uncertain

0.73

D;D;D;D

MetaSVM

Uncertain

0.21

MutationAssessor

Pathogenic

3.3

.;.;M;.

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-5.4

D;.;D;D

REVEL

Uncertain

0.61

Sift

Uncertain

0.010

D;.;D;D

Sift4G

Uncertain

0.011

D;D;D;D

Polyphen

0.99

.;.;D;.

Vest4

0.91

MVP

0.082

MPC

1.8

ClinPred

0.68

GERP RS

5.2

Varity_R

0.72

gMVP

0.73

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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