Variant 20-4856979-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM1BP4_ModerateBS2

The NM_005116.6(SLC23A2):c.1946C>T(p.Thr649Met) variant causes a missense change. The variant allele was found at a frequency of 0.000115 in 1,610,616 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: 0.00012 ( 0 hom. )

Consequence

SLC23A2
NM_005116.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.41

Variant links:

Genes affected

SLC23A2 (HGNC:10973): (solute carrier family 23 member 2) The absorption of vitamin C into the body and its distribution to organs requires two sodium-dependent vitamin C transporters. This gene encodes one of the two required transporters and the encoded protein accounts for tissue-specific uptake of vitamin C. Previously, this gene had an official symbol of SLC23A1. [provided by RefSeq, Jul 2008]

SLC23A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM1

In a modified_residue Phosphothreonine (size 0) in uniprot entity S23A2_HUMAN

BP4

Computational evidence support a benign effect (MetaRNN=0.1818797).

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC23A2	NM_005116.6 linkuse as main transcript	c.1946C>T	p.Thr649Met	missense_variant	17/17	ENST00000338244.6	NP_005107.4
SLC23A2	NM_203327.2 linkuse as main transcript	c.1946C>T	p.Thr649Met	missense_variant	17/17		NP_976072.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC23A2	ENST00000338244.6 linkuse as main transcript	c.1946C>T	p.Thr649Met	missense_variant	17/17	1	NM_005116.6	ENSP00000344322	P1	Q9UGH3-1
SLC23A2	ENST00000379333.5 linkuse as main transcript	c.1946C>T	p.Thr649Met	missense_variant	17/17	1		ENSP00000368637	P1	Q9UGH3-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000358

AC:

AN:

251228

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135798

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:

0.0000792

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000121

AC:

176

AN:

1458418

Hom.:

Cov.:

AF XY:

0.000101

AC XY:

AN XY:

725794

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.000154

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000482

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:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000453

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 21, 2023

The c.1946C>T (p.T649M) alteration is located in exon 17 (coding exon 15) of the SLC23A2 gene. This alteration results from a C to T substitution at nucleotide position 1946, causing the threonine (T) at amino acid position 649 to be replaced by a methionine (M). 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

Benign

0.096

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.20

T;T

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.29

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.61

.;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N

MutationTaster

Benign

0.96

D;D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.11

Sift

Uncertain

0.0090

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.0030

B;B

Vest4

0.51

MVP

0.082

MPC

1.4

ClinPred

0.16

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.048

gMVP

0.47

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over