rs80356492

Positions:

chr11-119025215-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PP3_ModeratePP5

The NM_001164279.2(SLC37A4):c.880G>A(p.Ala294Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000607 in 1,613,372 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000065 ( 0 hom. )

Consequence

SLC37A4
NM_001164279.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:4U:1O:1

Conservation

PhyloP100: 7.37

Variant links:

Genes affected

SLC37A4 (HGNC:4061): (solute carrier family 37 member 4) This gene regulates glucose-6-phosphate transport from the cytoplasm to the lumen of the endoplasmic reticulum, in order to maintain glucose homeostasis. It also plays a role in ATP-mediated calcium sequestration in the lumen of the endoplasmic reticulum. Mutations in this gene have been associated with various forms of glycogen storage disease. Alternative splicing in this gene results in multiple transcript variants.[provided by RefSeq, Aug 2009]

SLC37A4 links:

TRAPPC4 (HGNC:19943): (trafficking protein particle complex subunit 4) Involved in autophagy and endoplasmic reticulum to Golgi vesicle-mediated transport. Part of TRAPP complex. [provided by Alliance of Genome Resources, Apr 2022]

TRAPPC4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.848

PP5

Variant 11-119025215-C-T is Pathogenic according to our data. Variant chr11-119025215-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 21298.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=3, Pathogenic=1, Uncertain_significance=1, not_provided=1}. Variant chr11-119025215-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC37A4	NM_001164277.2 linkuse as main transcript	c.1099G>A	p.Ala367Thr	missense_variant	10/11	ENST00000642844.3	NP_001157749.1
SLC37A4	NM_001164279.2 linkuse as main transcript	c.880G>A	p.Ala294Thr	missense_variant	10/11		NP_001157751.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC37A4	ENST00000330775.9 linkuse as main transcript	c.1099G>A	p.Ala367Thr	missense_variant	9/10	5		ENSP00000476242	P1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000564

AC:

AN:

248140

Hom.:

AF XY:

0.0000668

AC XY:

AN XY:

134652

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:

0.000197

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000712

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000650

AC:

AN:

1461166

Hom.:

Cov.:

AF XY:

0.0000743

AC XY:

AN XY:

726840

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:

0.000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000747

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000115

Hom.:

Bravo

AF:

0.00000756

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000496

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:4Uncertain:1Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Glucose-6-phosphate transport defect

Pathogenic:4

Likely pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jan 06, 2023	Variant summary: SLC37A4 c.1099G>A (p.Ala367Thr) results in a non-conservative amino acid change located in the Major facilitator superfamily domain (IPR020846) of the encoded protein sequence. Three of three in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 5.6e-05 in 248140 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in SLC37A4 causing Glycogen Storage Disease Type Ib (5.6e-05 vs 0.0012), allowing no conclusion about variant significance. c.1099G>A has been reported in the literature as a compound heterozygous genotype in individuals affected with Glycogen Storage Disease Type Ib (example, Galli_1999, Santer_2000, Trioche_2004, Melis_2005, Wicker_2020). These data indicate that the variant is likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in 23% of normal Microsomal G6P uptake activity in vitro (example, Chen_2002). Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (VUS, n=2; Likely pathogenic, n=1). Based on the evidence outlined above, the variant was classified as likely pathogenic. -
Likely pathogenic, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Nov 01, 2021	NM_001164277.1(SLC37A4):c.1099G>A(A367T) is a missense variant classified as likely pathogenic in the context of glycogen storage disease type Ib. A367T has been observed in cases with relevant disease (PMID: 15669677, 15906092, 10923042, 32300528, Savostyanov_2017_(no PMID; article), Odlotilova_2013_(no PMID; thesis)). Functional assessments of this variant are available in the literature (PMID: 12444104, 18835800, 21983240). A367T has been observed in population frequency databases (gnomAD: SAS 0.02%). In summary, NM_001164277.1(SLC37A4):c.1099G>A(A367T) is a missense variant that has been observed more frequently in cases with the relevant disease than in healthy populations. Please note: this variant was assessed in the context of healthy population screening. -
Likely pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 27, 2023	This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 367 of the SLC37A4 protein (p.Ala367Thr). This variant is present in population databases (rs80356492, gnomAD 0.02%). This missense change has been observed in individuals with autosomal recessive glycogen storage disease (PMID: 10518030, 10923042, 32300528). This variant is also known as c.1268G>A. ClinVar contains an entry for this variant (Variation ID: 21298). 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 SLC37A4 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects SLC37A4 function (PMID: 12444104, 18835800). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Mar 19, 2024	- -

not provided

Uncertain:1Other:1

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Feb 03, 2017	- -
not provided, no classification provided	literature only	UniProtKB/Swiss-Prot	-	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.87

BayesDel_addAF

Pathogenic

0.36

BayesDel_noAF

Pathogenic

0.56

CADD

Pathogenic

DANN

Benign

0.94

DEOGEN2

Uncertain

0.42

T;T;T;T

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.99

.;D;D;D

M_CAP

Uncertain

0.20

MetaRNN

Pathogenic

0.85

D;D;D;D

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.81

Sift4G

Pathogenic

0.0

D;D;D;D

Vest4

0.94

MVP

0.33

MPC

0.17

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.90

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