NM_001126108.2(SLC12A3):c.2182G>A (p.Ala728Thr) AND Familial hypokalemia-hypomagnesemia

Germline classification:: Benign/Likely benign (4 submissions)
Last evaluated:: Jul 15, 2021
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV001120452.10

Allele description [Variation Report for NM_001126108.2(SLC12A3):c.2182G>A (p.Ala728Thr)]

NM_001126108.2(SLC12A3):c.2182G>A (p.Ala728Thr)

Gene:

SLC12A3:solute carrier family 12 member 3 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

16q13

Genomic location:

Preferred name:

NM_001126108.2(SLC12A3):c.2182G>A (p.Ala728Thr)

HGVS:

NC_000016.10:g.56887928G>A
NG_009386.2:g.27722G>A
NM_000339.3:c.2182G>A
NM_001126107.2:c.2179G>A
NM_001126108.2:c.2182G>AMANE SELECT
NP_000330.3:p.Ala728Thr
NP_001119579.2:p.Ala727Thr
NP_001119580.2:p.Ala728Thr
NC_000016.9:g.56921840G>A
NG_009386.1:g.27722G>A
NM_000339.2:c.2182G>A
NM_000339.3:c.2182G>A

Protein change:

A727T

Links:

dbSNP: rs36049418

NCBI 1000 Genomes Browser:

rs36049418

Molecular consequence:

NM_000339.3:c.2182G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001126107.2:c.2179G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_001126108.2:c.2182G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Familial hypokalemia-hypomagnesemia (GTLMNS)
Synonyms:: Potassium and magnesium depletion; Hypomagnesemia-hypokalemia, primary renotubular, with hypocalciuria
Identifiers:: MONDO: MONDO:0009904; MedGen: C0268450; Orphanet: 358; OMIM: 263800

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001278936	Illumina Laboratory Services, Illumina	criteria provided, single submitter (ICSL Variant Classification Criteria 13 December 2019)	Likely benign (Apr 27, 2017)	germline	clinical testing	PubMed (1) [See all records that cite this PMID] Citation Link,
SCV001435124	Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard	criteria provided, single submitter (ACMG Guidelines, 2015)	Benign	germline	research	PubMed (1) [See all records that cite this PMID]
SCV002055378	Genome-Nilou Lab	criteria provided, single submitter (ACMG Guidelines, 2015)	Benign (Jul 15, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV002089370	Natera, Inc.	no assertion criteria provided	Benign (Oct 25, 2019)	germline	clinical testing

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	research
not provided	germline	no	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Gitelman's variant of Bartter's syndrome, inherited hypokalaemic alkalosis, is caused by mutations in the thiazide-sensitive Na-Cl cotransporter.

Simon DB, Nelson-Williams C, Bia MJ, Ellison D, Karet FE, Molina AM, Vaara I, Iwata F, Cushner HM, Koolen M, Gainza FJ, Gitleman HJ, Lifton RP.

Nat Genet. 1996 Jan;12(1):24-30.

PubMed [citation]

PMID:: 8528245

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Illumina Laboratory Services, Illumina, SCV001278936.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard, SCV001435124.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	PubMed (1)

Description

The heterozygous p.Ala728Thr variant in SLC12A3 has been identified in an individual from the Philippines with Gitelman syndrome (PMID: 8528245), but has also been identified in >1% of European (non-Finnish) chromosomes and 27 homozygotes by ExAC (http://gnomad.broadinstitute.org/). In summary, this variant meets criteria to be classified as benign for autosomal recessive Gitelman syndrome.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Genome-Nilou Lab, SCV002055378.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	no	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Natera, Inc., SCV002089370.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 20, 2024

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