16-56865285-G-GCGGGCGCTTCAC

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PM4

The NM_001126108.2(SLC12A3):​c.52_63dupGGGCGCTTCACC​(p.Gly18_Thr21dup) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000372 in 1,613,850 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SLC12A3
NM_001126108.2 conservative_inframe_insertion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.80
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1
In a topological_domain Cytoplasmic (size 134) in uniprot entity S12A3_HUMAN there are 5 pathogenic changes around while only 2 benign (71%) in NM_001126108.2
PM2
Very rare variant in population databases, with high coverage;
PM4
Nonframeshift variant in NON repetitive region in NM_001126108.2.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SLC12A3NM_001126108.2 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/26 ENST00000563236.6 NP_001119580.2 P55017-1
SLC12A3NM_000339.3 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/26 NP_000330.3 P55017-2
SLC12A3NM_001126107.2 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/26 NP_001119579.2 P55017-3
SLC12A3NM_001410896.1 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/26 NP_001397825.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SLC12A3ENST00000563236.6 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/261 NM_001126108.2 ENSP00000456149.2 P55017-1
SLC12A3ENST00000438926.6 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/261 ENSP00000402152.2 P55017-2
SLC12A3ENST00000566786.5 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/261 ENSP00000457552.1 P55017-3
SLC12A3ENST00000262502.5 linkc.52_63dupGGGCGCTTCACC p.Gly18_Thr21dup conservative_inframe_insertion 1/265 ENSP00000262502.5 J3QSS1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152246
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000399
AC:
1
AN:
250890
Hom.:
0
AF XY:
0.00000737
AC XY:
1
AN XY:
135716
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 SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000883
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000342
AC:
5
AN:
1461604
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
727114
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000360
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152246
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74382
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000378

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Familial hypokalemia-hypomagnesemia Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsApr 01, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

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.

Other links and lift over

dbSNP: rs1338856682; hg19: chr16-56899197; API