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GeneBe

5-139372053-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005847.5(SLC23A1):c.1750G>A(p.Asp584Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,558 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/19 in silico tools predict 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: 0.000010 ( 0 hom. )

Consequence

SLC23A1
NM_005847.5 missense

Scores

1
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.14
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 Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.035704494).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SLC23A1NM_005847.5 linkuse as main transcriptc.1750G>A p.Asp584Asn missense_variant 14/15 ENST00000348729.8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SLC23A1ENST00000348729.8 linkuse as main transcriptc.1750G>A p.Asp584Asn missense_variant 14/151 NM_005847.5 P1Q9UHI7-1
SLC23A1ENST00000353963.7 linkuse as main transcriptc.1762G>A p.Asp588Asn missense_variant 14/151 Q9UHI7-2

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152208
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000620
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000119
AC:
3
AN:
251436
Hom.:
0
AF XY:
0.0000221
AC XY:
3
AN XY:
135904
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:
0.0000980
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000103
AC:
15
AN:
1461232
Hom.:
0
Cov.:
30
AF XY:
0.0000165
AC XY:
12
AN XY:
726978
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.000174
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152326
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74478
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000621
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000378
ExAC
AF:
0.0000247
AC:
3

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 GeneticsJan 24, 2024The c.1762G>A (p.D588N) alteration is located in exon 14 (coding exon 14) of the SLC23A1 gene. This alteration results from a G to A substitution at nucleotide position 1762, causing the aspartic acid (D) at amino acid position 588 to be replaced by an asparagine (N). 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
0.065
BayesDel_addAF
Benign
-0.44
T
BayesDel_noAF
Benign
-0.67
Cadd
Benign
18
Dann
Uncertain
1.0
Eigen
Benign
-0.34
Eigen_PC
Benign
-0.22
FATHMM_MKL
Benign
0.47
N
M_CAP
Benign
0.0047
T
MetaRNN
Benign
0.036
T;T
MetaSVM
Benign
-1.0
T
MutationTaster
Benign
0.97
N;N
PrimateAI
Benign
0.33
T
PROVEAN
Benign
-0.62
N;N
REVEL
Benign
0.056
Sift
Benign
0.083
T;T
Sift4G
Benign
0.22
T;T
Vest4
0.18
MutPred
0.12
.;Gain of glycosylation at P586 (P = 0.0722);
MVP
0.41
MPC
0.11
ClinPred
0.27
T
GERP RS
4.3
gMVP
0.41

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.

Other links and lift over

dbSNP: rs530752062; hg19: chr5-138707742; API