rs76750525

chr16-56865484-G-Achr16-56865484-G-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001126108.2(SLC12A3):c.249G>A(p.Arg83=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R83R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: SLC12A3 NM_001126108.2 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.02

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]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.53).
• BP7: Synonymous conserved (PhyloP=3.02 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC12A3	NM_001126108.2	c.249G>A	p.Arg83=	synonymous_variant	1/26	ENST00000563236.6
SLC12A3	NM_000339.3	c.249G>A	p.Arg83=	synonymous_variant	1/26
SLC12A3	NM_001126107.2	c.249G>A	p.Arg83=	synonymous_variant	1/26
SLC12A3	NM_001410896.1	c.249G>A	p.Arg83=	synonymous_variant	1/26

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC12A3	ENST00000563236.6	c.249G>A	p.Arg83=	synonymous_variant	1/26	1	NM_001126108.2	A1
SLC12A3	ENST00000438926.6	c.249G>A	p.Arg83=	synonymous_variant	1/26	1		A1
SLC12A3	ENST00000566786.5	c.249G>A	p.Arg83=	synonymous_variant	1/26	1		P4
SLC12A3	ENST00000262502.5	c.249G>A	p.Arg83=	synonymous_variant	1/26	5		A1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.53
Cadd	Benign	11
Dann	Benign	0.77
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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

Other links and lift over

dbSNP: rs76750525; hg19: chr16-56899396;