chr20-46725430-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_030777.4(SLC2A10):c.394C>T(p.Arg132Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000564 in 1,613,986 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000053 ( 0 hom. )

Consequence

SLC2A10
NM_030777.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:13U:1O:1

Conservation

PhyloP100: 1.03

Variant links:

Genes affected

SLC2A10 (HGNC:13444): (solute carrier family 2 member 10) This gene encodes a member of the class III facilitative glucose transporter family. The encoded protein plays a role in regulation of glucose homeostasis. Mutations in this gene have been associated with arterial tortuosity syndrome.[provided by RefSeq, Dec 2009]

SLC2A10 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.989

PP5

Variant 20-46725430-C-T is Pathogenic according to our data. Variant chr20-46725430-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 4590.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr20-46725430-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC2A10	NM_030777.4 link	c.394C>T	p.Arg132Trp	missense_variant	Exon 2 of 5	ENST00000359271.4	NP_110404.1	O95528

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC2A10	ENST00000359271.4 link	c.394C>T	p.Arg132Trp	missense_variant	Exon 2 of 5	1	NM_030777.4	ENSP00000352216.2		O95528
SLC2A10	ENST00000611837.1 link	n.546C>T		non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000318

AC:

AN:

251318

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135860

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000527

AC:

AN:

1461844

Hom.:

Cov.:

AF XY:

0.0000509

AC XY:

AN XY:

727226

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.0000224

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:

0.0000558

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74318

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000988

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:13Uncertain:1Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Arterial tortuosity syndrome

Pathogenic:7Uncertain:1Other:1

Mar 30, 2021

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SLC2A10 NM_030777.3 exon 2 p.Arg132Trp (c.394C>T): This variant has been reported in the literature in the compound heterozygous state with another pathogenic variant, in at least 5 individuals with aterial tortuosity syndrome, segregating with disease in one affected family member (Callewaert 2008 PMID:17935213, Hardin 2018 PMID:28726533, Weerakkody 2018 PMID:29543232). This variant is present in 0.005% (7/129070) of European alleles in the Genome Aggregation Database (https://gnomad.broadinstitute.org/variant/20-45354069-C-T). Please note, disease causing variants may be present in control databases at low frequencies, reflective of the general population, carrier status, and/or variable expressivity. This variant is present in ClinVar (Variation ID:4590). Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. In summary, data on this variant is highly suspicious for disease, but requires further evidence for pathogenicity. Therefore, this variant is classified as likely pathogenic. -

Jun 02, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: SLC2A10 c.394C>T (p.Arg132Trp) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.2e-05 in 251318 control chromosomes (gnomAD). c.394C>T has been reported in the literature as a compound heterozygous genotype in multiple individuals affected with Arterial Tortuosity Syndrome and has been found to segregate with the disease phenotype in at least one family (e.g. Beyens_2018, Callewaert_2008). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 29323665, 17935213). Six submitters have provided clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as pathogenic (n=1)/likely pathogenic (n=3) and VUS (n=2). Based on the evidence outlined above, the variant was classified as pathogenic. -

Sep 19, 2024

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with arterial tortuosity syndrome (MIM#208050). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0115 - Variants in this gene are known to have variable expressivity, with intrafamilial variability also reported (PMID: 30425910). (I) 0200 - Variant is predicted to result in a missense amino acid change from arginine to tryptophan. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD (v3) <0.01 for a recessive condition (14 heterozygotes, 0 homozygotes). (SP) 0309 - Multiple alternative amino acid changes at the same position have been observed in gnomAD (v2) (highest allele count: 18 heterozygotes, 0 homozygotes). (I) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0600 - Variant is located in the annotated sugar (and other) transporter domain (DECIPHER). (I) 0704 - Another missense variant comparable to the one identified in this case has limited previous evidence for pathogenicity. This alternative change (p.(Arg132Leu)) has been reported once as likely pathogenic (ClinVar). Another variant (p.(Arg132Gln)) has been reported in a homozygous and a compound heterozygous individual with arterial tortuosity syndrome (ATS), but also described as a VUS and as likely pathogenic (ClinVar, PMID: 29323665). (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. This variant has been reported twice as a VUS, but more recently as likely pathogenic and pathogenic, and has been observed in at least six unrelated compound heterozygous individuals with ATS (PMID: 29323665, PMID: 17935213, ClinVar). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

GeneReviews

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Nov 27, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 132 of the SLC2A10 protein (p.Arg132Trp). This variant is present in population databases (rs121908173, gnomAD 0.007%). This missense change has been observed in individual(s) with autosomal recessive arterial tortuosity syndrome (PMID: 17935213, 28726533, 29543232). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 4590). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt SLC2A10 protein function with a positive predictive value of 95%. For these reasons, this variant has been classified as Pathogenic. -

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: flagged submission

Collection Method: clinical testing

- -

Nov 03, 2022

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Arg132Trp variant in SLC2A10 has been reported in the compound heterozygous state with another pathogenic variant in at least 5 individuals with features of arterial tortuosity syndrome and segregated with disease in one relative(Callewaert 2008 PMID:17935213, Hardin 2018 PMID:28726533, Weerakkody 2018 PMID:29543232, Beyens 2018 PMID: 29323665). It has also been reported in ClinVar (Variation ID:4590). This variant has been identified in 11/68012 of European alleles by gnomAD (https://gnomad.broadinstitute.org). Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely pathogenic for autosomal recessive arterial tortuosity syndrome. ACMG/AMP Criteria applied: PM2_Supporting, PP3, PM3_VS. -

Jan 01, 2008

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Apr 26, 2024

Institute of Human Genetics, Heidelberg University

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:4

May 27, 2022

Clinical Genetics Laboratory, Skane University Hospital Lund

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

May 20, 2021

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Reported in ClinVar (ClinVar Variant ID# 4590; Landrum et al., 2016); This variant is associated with the following publications: (PMID: 29543232, 17935213, 28726533, 25392904) -

Feb 17, 2022

AiLife Diagnostics, AiLife Diagnostics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SLC2A10: PM3:Very Strong, PM2, PM5:Supporting -

Familial thoracic aortic aneurysm and aortic dissection

Pathogenic:2

Centre for Genomic and Experimental Medicine, University of Edinburgh

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Dec 22, 2023

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R132W pathogenic mutation (also known as c.394C>T), located in coding exon 2 of the SLC2A10 gene, results from a C to T substitution at nucleotide position 394. The arginine at codon 132 is replaced by tryptophan, an amino acid with dissimilar properties. This variant has been reported to co-occur in trans with other pathogenic variants in the SLC2A10 gene in probands with arterial tortuosity syndrome (Callewaert BL et al, Hum. Mutat. 2008 Jan; 29(1):150-8; Beyens A et al. Genet Med. 2018 Oct;20(10):1236-1245). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.61

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.34

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.81

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.89

MutationAssessor

Pathogenic

4.4

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-7.7

REVEL

Pathogenic

0.85

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.96

MutPred

0.95

Loss of methylation at R132 (P = 0.0369);

MVP

0.95

MPC

0.41

ClinPred

1.0

GERP RS

2.2

Varity_R

0.95

gMVP

0.87

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