rs759532318

Positions:

chr16-56879108-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1PM2PP5

The ENST00000563236.6(SLC12A3):c.1216A>C(p.Asn406His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000287 in 1,461,156 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

SLC12A3
ENST00000563236.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 8.78

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 5 ACMG points.

PM1

In a glycosylation_site N-linked (GlcNAc...) asparagine (size 0) in uniprot entity S12A3_HUMAN

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-56879108-A-C is Pathogenic according to our data. Variant chr16-56879108-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 225467.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SLC12A3	NM_001126108.2 linkuse as main transcript	c.1216A>C	p.Asn406His	missense_variant	10/26	ENST00000563236.6	NP_001119580.2
SLC12A3	NM_000339.3 linkuse as main transcript	c.1216A>C	p.Asn406His	missense_variant	10/26		NP_000330.3
SLC12A3	NM_001126107.2 linkuse as main transcript	c.1213A>C	p.Asn405His	missense_variant	10/26		NP_001119579.2
SLC12A3	NM_001410896.1 linkuse as main transcript	c.1213A>C	p.Asn405His	missense_variant	10/26		NP_001397825.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC12A3	ENST00000563236.6 linkuse as main transcript	c.1216A>C	p.Asn406His	missense_variant	10/26	1	NM_001126108.2	ENSP00000456149	A1	P55017-1
SLC12A3	ENST00000438926.6 linkuse as main transcript	c.1216A>C	p.Asn406His	missense_variant	10/26	1		ENSP00000402152	A1	P55017-2
SLC12A3	ENST00000566786.5 linkuse as main transcript	c.1213A>C	p.Asn405His	missense_variant	10/26	1		ENSP00000457552	P4	P55017-3
SLC12A3	ENST00000262502.5 linkuse as main transcript	c.1213A>C	p.Asn405His	missense_variant	10/26	5		ENSP00000262502	A1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000841

AC:

AN:

249840

Hom.:

AF XY:

0.0000665

AC XY:

AN XY:

135252

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00114

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:

0.0000287

AC:

AN:

1461156

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

726838

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00103

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

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.000173

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 09, 2024

This sequence change replaces asparagine, which is neutral and polar, with histidine, which is basic and polar, at codon 406 of the SLC12A3 protein (p.Asn406His). This variant is present in population databases (rs759532318, gnomAD 0.1%). This missense change has been observed in individual(s) with clinical features of Gitelman syndrome (PMID: 14655226, 17511264, 26770037, 30596175, 32528714). 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: 225467). 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 expected to disrupt SLC12A3 protein function with a positive predictive value of 95%. For these reasons, this variant has been classified as Pathogenic. -

Familial hypokalemia-hypomagnesemia

Uncertain:1

Uncertain significance, criteria provided, single submitter

reference population

Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center

Mar 18, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Uncertain

0.0

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

.;.;D;D

Eigen

Uncertain

0.68

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.54

D;D;D;D

MetaSVM

Uncertain

-0.040

MutationAssessor

Uncertain

2.7

.;M;M;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.9

D;D;D;D

REVEL

Uncertain

0.48

Sift

Uncertain

0.0020

D;D;D;D

Sift4G

Uncertain

0.0060

D;D;D;D

Polyphen

1.0

D;D;D;.

Vest4

0.92

MutPred

0.69

.;Gain of catalytic residue at N406 (P = 0.0613);Gain of catalytic residue at N406 (P = 0.0613);.;

MVP

0.98

MPC

0.45

ClinPred

0.57

GERP RS

5.3

Varity_R

0.56

gMVP

0.91

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