4-103026566-T-C

Position:

• chr4-103026566-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_178833.7(SLC9B2):​c.1418A>G​(p.Asp473Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC9B2 NM_178833.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.19

Genes affected

SLC9B2 (HGNC:25143): (solute carrier family 9 member B2) Sodium hydrogen antiporters, such as NHEDC2, convert the proton motive force established by the respiratory chain or the F1F0 mitochondrial ATPase into sodium gradients that drive other energy-requiring processes, transduce environmental signals into cell responses, or function in drug efflux (Xiang et al., 2007 [PubMed 18000046]).[supplied by OMIM, Mar 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.852

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC9B2	NM_178833.7	c.1418A>G	p.Asp473Gly	missense_variant	12/12	ENST00000394785.9	NP_849155.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC9B2	ENST00000394785.9	c.1418A>G	p.Asp473Gly	missense_variant	12/12	2	NM_178833.7	ENSP00000378265	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 22, 2024

The c.1418A>G (p.D473G) alteration is located in exon 12 (coding exon 11) of the SLC9B2 gene. This alteration results from a A to G substitution at nucleotide position 1418, causing the aspartic acid (D) at amino acid position 473 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.74
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.21	T;T;.
Eigen	Uncertain	0.60
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	.;D;D
M_CAP	Benign	0.031	D
MetaRNN	Pathogenic	0.85	D;D;D
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.64	T
PROVEAN	Pathogenic	-4.4	D;D;D
REVEL	Uncertain	0.53
Sift	Uncertain	0.0030	D;D;D
Sift4G	Uncertain	0.018	D;D;D
Polyphen		1.0	D;D;P
Vest4		0.94
MutPred		0.59		Gain of methylation at R476 (P = 0.0566);Gain of methylation at R476 (P = 0.0566);.;
MVP		0.58
MPC		0.16
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.89
gMVP		0.86

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.19		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: rs1742234194; hg19: chr4-103947723;