5-128084006-G-T

Position:

• chr5-128084006-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001046.3(SLC12A2):​c.52G>T​(p.Val18Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000742 in 1,254,116 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000076 (0 hom.)
• Consequence: SLC12A2 NM_001046.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.448

Genes affected

SLC12A2 (HGNC:10911): (solute carrier family 12 member 2) The protein encoded by this gene mediates sodium and chloride transport and reabsorption. The encoded protein is a membrane protein and is important in maintaining proper ionic balance and cell volume. This protein is phosphorylated in response to DNA damage. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.17182925).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC12A2	NM_001046.3	c.52G>T	p.Val18Phe	missense_variant	1/27	ENST00000262461.7	NP_001037.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC12A2	ENST00000262461.7	c.52G>T	p.Val18Phe	missense_variant	1/27	1	NM_001046.3	ENSP00000262461	P4
SLC12A2	ENST00000343225.4	c.52G>T	p.Val18Phe	missense_variant	1/26	1		ENSP00000340878	A2
SLC12A2	ENST00000509205.5	c.52G>T	p.Val18Phe	missense_variant, NMD_transcript_variant	1/27	1		ENSP00000427109
SLC12A2	ENST00000628403.2	c.52G>T	p.Val18Phe	missense_variant	1/26	5		ENSP00000486323

Frequencies

GnomAD3 genomes AF: 0.0000593 AC: 9 AN: 151700 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.000118

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000762 AC: 84 AN: 1102416 Hom.: 0 Cov.: 30 AF XY: 0.0000759 AC XY: 40 AN XY: 527194

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000239

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: 0.0000867

Gnomad4 OTH exome AF: 0.0000228

GnomAD4 genome AF: 0.0000593 AC: 9 AN: 151700 Hom.: 0 Cov.: 32 AF XY: 0.0000405 AC XY: 3 AN XY: 74090

Gnomad4 AFR AF: 0.0000242

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: 0.000118

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.0000945

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 12, 2023

The c.52G>T (p.V18F) alteration is located in exon 1 (coding exon 1) of the SLC12A2 gene. This alteration results from a G to T substitution at nucleotide position 52, causing the valine (V) at amino acid position 18 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 26, 2022

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 SLC12A2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. This missense change has been observed in individual(s) with clinical features of SLC12A2-related conditions (Invitae). This variant is present in population databases (no rsID available, gnomAD 0.01%). This sequence change replaces valine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 18 of the SLC12A2 protein (p.Val18Phe). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Uncertain	0.048	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	10
DANN	Benign	0.83
DEOGEN2	Benign	0.17	T;.;.
Eigen	Benign	-0.98
Eigen_PC	Benign	-0.96
FATHMM_MKL	Benign	0.092	N
LIST_S2	Benign	0.76	T;T;T
M_CAP	Pathogenic	0.81	D
MetaRNN	Benign	0.17	T;T;T
MetaSVM	Benign	-0.78	T
MutationAssessor	Benign	0.69	N;.;N
MutationTaster	Benign	1.0	N;N
PrimateAI	Pathogenic	0.84	D
PROVEAN	Benign	-0.080	N;.;N
REVEL	Benign	0.25
Sift	Benign	0.27	T;.;T
Sift4G	Benign	0.73	T;T;T
Polyphen		0.012	B;.;B
Vest4		0.23
MVP		0.39
MPC		0.92
ClinPred		0.14	T
GERP RS		0.87
Varity_R		0.062
gMVP		0.29

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: rs1025704186; hg19: chr5-127419698;