1-42930856-T-C

Position:

chr1-42930856-T-C

Variant summary

Our verdict is Pathogenic. Variant got 15 ACMG points: 15P and 0B. PM1PM2PP2PP3_ModeratePP5_Very_Strong

The NM_006516.4(SLC2A1):c.286A>G(p.Met96Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000138 in 1,448,662 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: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SLC2A1
NM_006516.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4

Conservation

PhyloP100: 6.17

Variant links:

Genes affected

SLC2A1 (HGNC:11005): (solute carrier family 2 member 1) This gene encodes a major glucose transporter in the mammalian blood-brain barrier. The encoded protein is found primarily in the cell membrane and on the cell surface, where it can also function as a receptor for human T-cell leukemia virus (HTLV) I and II. Mutations in this gene have been found in a family with paroxysmal exertion-induced dyskinesia. [provided by RefSeq, Apr 2013]

SLC2A1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 15 ACMG points.

PM1

In a transmembrane_region Helical; Name=3 (size 21) in uniprot entity GTR1_HUMAN there are 7 pathogenic changes around while only 0 benign (100%) in NM_006516.4

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SLC2A1. . Gene score misZ 2.9256 (greater than the threshold 3.09). Trascript score misZ 4.6729 (greater than threshold 3.09). GenCC has associacion of gene with childhood absence epilepsy, dystonia 9, epilepsy, idiopathic generalized, susceptibility to, 12, GLUT1 deficiency syndrome, myoclonic-astatic epilepsy, childhood onset GLUT1 deficiency syndrome 2, hereditary cryohydrocytosis with reduced stomatin, encephalopathy due to GLUT1 deficiency.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.867

PP5

Variant 1-42930856-T-C is Pathogenic according to our data. Variant chr1-42930856-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 538680.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC2A1	NM_006516.4 linkuse as main transcript	c.286A>G	p.Met96Val	missense_variant	4/10	ENST00000426263.10	NP_006507.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC2A1	ENST00000426263.10 linkuse as main transcript	c.286A>G	p.Met96Val	missense_variant	4/10	1	NM_006516.4	ENSP00000416293	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000125

AC:

AN:

240850

Hom.:

AF XY:

0.00

AC XY:

AN XY:

130918

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:

0.000243

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1448662

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

721038

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:

0.00

Gnomad4 FIN exome

AF:

0.0000495

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Mar 26, 2024	Published functional studies demonstrate a damaging effect as M96V impairs glucose transport in vitro (PMID: 30588498); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 24847886, 34305802, 20129935, 26598494, 26986070, 30588498) -
Likely pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2021	- -

Encephalopathy due to GLUT1 deficiency

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Apr 11, 2023

- -

GLUT1 deficiency syndrome 1, autosomal recessive

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 17, 2023

This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 96 of the SLC2A1 protein (p.Met96Val). This variant is present in population databases (rs753161833, gnomAD 0.02%). This missense change has been observed in individual(s) with GLUT1-deficiency syndrome (PMID: 20129935, 26598494, 30588498). ClinVar contains an entry for this variant (Variation ID: 538680). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SLC2A1 protein function. Experimental studies have shown that this missense change affects SLC2A1 function (PMID: 30588498). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.26

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.83

D;.

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.89

D;D

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.87

D;D

MetaSVM

Uncertain

0.091

MutationAssessor

Uncertain

2.2

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.65

PROVEAN

Uncertain

-3.6

D;.

REVEL

Pathogenic

0.82

Sift

Uncertain

0.0020

D;.

Sift4G

Uncertain

0.0060

D;D

Polyphen

0.88

P;.

Vest4

0.83

MutPred

0.77

Loss of MoRF binding (P = 0.1027);.;

MVP

0.94

MPC

2.0

ClinPred

0.94

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.88

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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