ENST00000330775.9:c.287G>A

Variant names:

• chr11-119028288-C-T
• rs121908976
• ENST00000330775.9:c.287G>A

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1 PP5_Very_Strong

The ENST00000330775.9(SLC37A4):​c.287G>A​(p.Trp96*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000343 in 1,456,142 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 Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000034 (0 hom.)
• Consequence: SLC37A4 ENST00000330775.9 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 5.57
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• congenital disorder of glycosylation, type IIw

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• glycogen storage disease Ib

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
• glycogen storage disease type 1 due to SLC37A4 mutation

  Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health

ACMG classification

Our verdict: Pathogenic. The variant received 16 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PP5: Variant 11-119028288-C-T is Pathogenic according to our data. Variant chr11-119028288-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 6928.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC37A4	NM_001164278.2	c.287G>A	p.Trp96*	stop_gained	Exon 4 of 12		NP_001157750.1
SLC37A4	NM_001164277.2	c.287G>A	p.Trp96*	stop_gained	Exon 4 of 11		NP_001157749.1
SLC37A4	NM_001164280.2	c.287G>A	p.Trp96*	stop_gained	Exon 2 of 9		NP_001157752.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC37A4	ENST00000330775.9	c.287G>A	p.Trp96*	stop_gained	Exon 3 of 10	5		ENSP00000476242.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000840 AC: 2 AN: 238134 AF XY: 0.00000775

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000186

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000343 AC: 50 AN: 1456142 Hom.: 0 Cov.: 32 AF XY: 0.0000332 AC XY: 24 AN XY: 723712

African (AFR) AF: 0.00 AC: 0 AN: 33380

American (AMR) AF: 0.00 AC: 0 AN: 43786

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25956

East Asian (EAS) AF: 0.00 AC: 0 AN: 39512

South Asian (SAS) AF: 0.00 AC: 0 AN: 85024

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53082

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.0000433 AC: 48 AN: 1109454

Other (OTH) AF: 0.0000332 AC: 2 AN: 60186

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000100 Hom.: 0

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Glucose-6-phosphate transport defect Pathogenic:3

Dec 01, 2014

Counsyl

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -

Jan 17, 2023

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 27, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Trp96*) in the SLC37A4 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SLC37A4 are known to be pathogenic (PMID: 9758626, 10940311). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This premature translational stop signal has been observed in individual(s) with glycogen storage disease (PMID: 9758626). ClinVar contains an entry for this variant (Variation ID: 6928). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. -

Phosphate transport defect Pathogenic:1

Oct 01, 1998

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.55
CADD	Pathogenic	40
DANN	Benign	0.85
FATHMM_MKL	Uncertain	0.92	D
PhyloP100		5.6
Vest4		0.79
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=1/199	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.12		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs121908976; hg19: chr11-118898998;