NM_000338.3:c.1522G>A

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM2PP3_ModeratePP5_Very_Strong

The NM_000338.3(SLC12A1):c.1522G>A(p.Ala508Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,613,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

SLC12A1
NM_000338.3 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 9.77

Publications

19 publications found

Variant links:

Genes affected

SLC12A1 (HGNC:10910): (solute carrier family 12 member 1) This gene encodes a kidney-specific sodium-potassium-chloride cotransporter that is expressed on the luminal membrane of renal epithelial cells of the thick ascending limb of Henle's loop and the macula densa. It plays a key role in concentrating urine and accounts for most of the NaCl resorption. It is sensitive to such diuretics as furosemide and bumetanide. Some Bartter-like syndromes result from defects in this gene. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional splice variants have been described but their biological validity in humans has not been experimentally proven.[provided by RefSeq, May 2010]

SLC12A1 Gene-Disease associations (from GenCC):

Bartter disease type 1
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
antenatal Bartter syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SLC12A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 12 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.912

PP5

Variant 15-48246978-G-A is Pathogenic according to our data. Variant chr15-48246978-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 242488.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC12A1	NM_000338.3 link	c.1522G>A	p.Ala508Thr	missense_variant	Exon 12 of 27	ENST00000380993.8	NP_000329.2	Q13621-1Q8IUN5
SLC12A1	NM_001184832.2 link	c.1522G>A	p.Ala508Thr	missense_variant	Exon 12 of 27		NP_001171761.1	Q13621-3B4DPF4
SLC12A1	NM_001384136.1 link	c.1522G>A	p.Ala508Thr	missense_variant	Exon 12 of 27		NP_001371065.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC12A1	ENST00000380993.8 link	c.1522G>A	p.Ala508Thr	missense_variant	Exon 12 of 27	5	NM_000338.3	ENSP00000370381.3		Q13621-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152080

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000280

AC:

AN:

250148

AF XY:

0.0000296

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000621

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000212

AC:

AN:

1461652

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727112

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000279

AC:

AN:

1111826

Other (OTH)

AF:

0.00

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152080

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74280

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41416

American (AMR)

AF:

0.0000655

AC:

AN:

15266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000186

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

May 12, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Experimental studies have shown that this missense change affects SLC12A1 function (PMID: 12761241, 33973684). This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 508 of the SLC12A1 protein (p.Ala508Thr). This variant is present in population databases (rs765347751, gnomAD 0.005%). This missense change has been observed in individual(s) with clinical features of Bartter syndrome type 1 (PMID: 9585600, 19096086, 20219833, 25326637, 28095294). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 242488). 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 SLC12A1 protein function. For these reasons, this variant has been classified as Pathogenic. -

Jan 21, 2019

Athena Diagnostics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The best available variant frequency is uninformative because it is below the disease allele frequency. Statistically enriched in patients compared to ethnically matched controls. Found in at least one symptomatic patient. Predicted to have a damaging effect on the protein. Results on protein functions were inconclusive. -

Bartter disease type 1

Pathogenic:1

Oct 29, 2018

Illumina Laboratory Services, Illumina

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The SLC12A1 c.1522G>A (p.Ala508Thr) variant has been reported in three studies and in a total of four unrelated patients with Bartter syndrome, including one in a homozygous state, two in a compound heterozygous state, and one in a heterozygous state in whom a second variant was not detected (Vargas-Poussou et al. 1998; Puricelli et al. 2010; Wongsaengsak et al. 2017). The p.Ala508Thr variant was absent from 100 controls (Vargas-Poussou et al. 1998; Puricelli et al. 2010) and is reported at a frequency of 0.00009 in the European (non-Finnish) population of the Exome Aggregation Consortium. Functional testing demonstrated that the p.Ala508Thr variant resulted in a protein with reduced sodium uptake activity (Starremans et al. 2003). Based on the evidence, the p.Ala508Thr variant is classified as likely pathogenic for antenatal Bartter syndrome. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.44

BayesDel_noAF

Pathogenic

0.55

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.85

.;.;D;.;D;D;.

Eigen

Pathogenic

0.98

Eigen_PC

Pathogenic

0.91

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

.;D;.;D;.;D;D

M_CAP

Pathogenic

0.33

MetaRNN

Pathogenic

0.91

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

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.0

M;.;M;.;M;M;M

PhyloP100

9.8

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-3.6

.;.;.;D;D;D;D

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

.;.;.;D;D;D;D

Sift4G

Pathogenic

0.0010

.;.;.;D;D;D;D

Polyphen

1.0

.;.;D;.;D;D;.

Vest4

0.98, 0.98

MVP

0.98

MPC

0.62

ClinPred

0.95

GERP RS

5.0

Varity_R

0.76

gMVP

0.88

Mutation Taster

=11/89

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over