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GeneBe

5-139379777-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_005847.5(SLC23A1):c.826G>A(p.Val276Met) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,613,934 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

SLC23A1
NM_005847.5 missense

Scores

3
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.30
Variant links:
Genes affected
SLC23A1 (HGNC:10974): (solute carrier family 23 member 1) 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 transporters. The encoded protein is active in bulk vitamin C transport involving epithelial surfaces. Previously, this gene had an official symbol of SLC23A2. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.24964848).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SLC23A1NM_005847.5 linkuse as main transcriptc.826G>A p.Val276Met missense_variant 8/15 ENST00000348729.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SLC23A1ENST00000348729.8 linkuse as main transcriptc.826G>A p.Val276Met missense_variant 8/151 NM_005847.5 P1Q9UHI7-1
SLC23A1ENST00000353963.7 linkuse as main transcriptc.838G>A p.Val280Met missense_variant 8/151 Q9UHI7-2
SLC23A1ENST00000504513.1 linkuse as main transcriptc.164+179G>A intron_variant 5
SLC23A1ENST00000506512.1 linkuse as main transcriptn.437G>A non_coding_transcript_exon_variant 1/24

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152046
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
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:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.0000239
AC:
6
AN:
251444
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135896
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:
0.0000653
Gnomad FIN exome
AF:
0.0000462
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.000489
GnomAD4 exome
AF:
0.00000889
AC:
13
AN:
1461888
Hom.:
0
Cov.:
33
AF XY:
0.00000550
AC XY:
4
AN XY:
727246
show subpopulations
Gnomad4 AFR exome
AF:
0.0000896
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.0000374
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152046
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74240
show subpopulations
Gnomad4 AFR
AF:
0.0000483
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:
0.00
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.000130
Hom.:
0
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

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 submitterclinical testingAmbry GeneticsApr 12, 2023The c.838G>A (p.V280M) alteration is located in exon 8 (coding exon 8) of the SLC23A1 gene. This alteration results from a G to A substitution at nucleotide position 838, causing the valine (V) at amino acid position 280 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
0.12
BayesDel_addAF
Benign
-0.38
T
BayesDel_noAF
Benign
-0.61
Cadd
Uncertain
24
Dann
Uncertain
0.99
Eigen
Benign
-0.12
Eigen_PC
Benign
-0.11
FATHMM_MKL
Uncertain
0.91
D
M_CAP
Benign
0.0085
T
MetaRNN
Benign
0.25
T;T
MetaSVM
Benign
-1.1
T
MutationTaster
Benign
1.0
D;D
PrimateAI
Uncertain
0.51
T
PROVEAN
Benign
-1.6
N;N
REVEL
Benign
0.080
Sift
Benign
0.033
D;D
Sift4G
Benign
0.068
T;T
Vest4
0.22
MutPred
0.44
.;Gain of disorder (P = 0.1035);
MVP
0.62
MPC
0.98
ClinPred
0.43
T
GERP RS
1.5
gMVP
0.67

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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.

Other links and lift over

dbSNP: rs775489994; hg19: chr5-138715466; COSMIC: COSV62295933; COSMIC: COSV62295933; API