16-56865272-G-A

Position:

chr16-56865272-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_001126108.2(SLC12A3):c.37G>A(p.Ala13Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000093 in 1,613,684 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A13P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SLC12A3
NM_001126108.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.512

Variant links:

Genes affected

SLC12A3 (HGNC:10912): (solute carrier family 12 member 3) This gene encodes a renal thiazide-sensitive sodium-chloride cotransporter that is important for electrolyte homeostasis. This cotransporter mediates sodium and chloride reabsorption in the distal convoluted tubule. Mutations in this gene cause Gitelman syndrome, a disease similar to Bartter's syndrome, that is characterized by hypokalemic alkalosis combined with hypomagnesemia, low urinary calcium, and increased renin activity associated with normal blood pressure. This cotransporter is the target for thiazide diuretics that are used for treating high blood pressure. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

SLC12A3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM1

In a topological_domain Cytoplasmic (size 134) in uniprot entity S12A3_HUMAN there are 21 pathogenic changes around while only 6 benign (78%) in NM_001126108.2

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.037533343).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SLC12A3	NM_001126108.2 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26	ENST00000563236.6
SLC12A3	NM_000339.3 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26
SLC12A3	NM_001126107.2 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26
SLC12A3	NM_001410896.1 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC12A3	ENST00000563236.6 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26	1	NM_001126108.2	A1	P55017-1
SLC12A3	ENST00000438926.6 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26	1		A1	P55017-2
SLC12A3	ENST00000566786.5 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26	1		P4	P55017-3
SLC12A3	ENST00000262502.5 linkuse as main transcript	c.37G>A	p.Ala13Thr	missense_variant	1/26	5		A1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250400

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135562

show subpopulations

Gnomad AFR exome

AF:

0.000123

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:

0.00000886

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461470

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727052

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000869

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2023

The c.37G>A (p.A13T) alteration is located in exon 1 (coding exon 1) of the SLC12A3 gene. This alteration results from a G to A substitution at nucleotide position 37, causing the alanine (A) at amino acid position 13 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 06, 2022

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 13 of the SLC12A3 protein (p.Ala13Thr). This variant is present in population databases (rs147200024, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with SLC12A3-related conditions. 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 SLC12A3 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

0.065

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.50

CADD

Benign

7.8

DANN

Benign

0.96

DEOGEN2

Benign

0.17

.;.;T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.069

LIST_S2

Benign

0.58

T;T;T;T

M_CAP

Benign

0.037

MetaRNN

Benign

0.038

T;T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

0.0

N;N;N;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.31

PROVEAN

Benign

-0.18

N;N;N;N

REVEL

Benign

0.089

Sift

Benign

0.68

T;T;T;T

Sift4G

Benign

0.42

T;T;T;T

Polyphen

0.0

B;B;B;.

Vest4

0.13

MutPred

0.16

Gain of glycosylation at A13 (P = 0.0142);Gain of glycosylation at A13 (P = 0.0142);Gain of glycosylation at A13 (P = 0.0142);Gain of glycosylation at A13 (P = 0.0142);

MVP

0.52

MPC

0.084

ClinPred

0.024

GERP RS

1.7

Varity_R

0.035

gMVP

0.42

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