rs587776942

Variant names:

• chr18-45867742-G-A
• rs587776942
• NM_020964.3:c.6232C>T

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_020964.3(EPG5):​c.6232C>T​(p.Arg2078*) variant causes a stop gained change. The variant allele was found at a frequency of 0.0000139 in 1,442,376 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: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: EPG5 NM_020964.3 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 5.38

Genes affected

EPG5 (HGNC:29331): (ectopic P-granules 5 autophagy tethering factor) This gene encodes a large coiled coil domain-containing protein that functions in autophagy during starvation conditions. Mutations in this gene cause Vici syndrome. [provided by RefSeq, Aug 2015]

ACMG classification

Verdict is Pathogenic. Variant got 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 18-45867742-G-A is Pathogenic according to our data. Variant chr18-45867742-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 39984.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr18-45867742-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EPG5	NM_020964.3	c.6232C>T	p.Arg2078*	stop_gained	Exon 37 of 44	ENST00000282041.11	NP_066015.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EPG5	ENST00000282041.11	c.6232C>T	p.Arg2078*	stop_gained	Exon 37 of 44	1	NM_020964.3	ENSP00000282041.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000170 AC: 4 AN: 235552 Hom.: 0 AF XY: 0.00000781 AC XY: 1 AN XY: 128072

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: 0.00

Gnomad NFE exome AF: 0.0000367

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000139 AC: 20 AN: 1442376 Hom.: 0 Cov.: 31 AF XY: 0.0000112 AC XY: 8 AN XY: 715984

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000253

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000154

Gnomad4 OTH exome AF: 0.0000336

GnomAD4 genome Cov.: 32

Alfa AF: 0.000106 Hom.: 0

ExAC AF: 0.00000828 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Vici syndrome Pathogenic:4

Jan 17, 2019

SIB Swiss Institute of Bioinformatics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: curation

This variant is interpreted as a Pathogenic for Vici syndrome, autosomal recessive. The following ACMG Tag(s) were applied: PM2 => Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PVS1 => Predicted nullvariant in a gene where LOF is a known mechanism of disease. PM3 => For recessive disorders, detected in trans with a pathogenic variant (PMID:23222957). -

Jan 01, 2013

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Feb 23, 2015

Genetic Services Laboratory, University of Chicago

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 05, 2024

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.Arg2078*) in the EPG5 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in EPG5 are known to be pathogenic (PMID: 23222957, 23674064). This variant is present in population databases (rs587776942, gnomAD 0.003%). This premature translational stop signal has been observed in individual(s) with Vici syndrome (PMID: 23222957). ClinVar contains an entry for this variant (Variation ID: 39984). For these reasons, this variant has been classified as Pathogenic. -

not provided Pathogenic:1

Sep 15, 2023

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 28333917, 26917586, 23222957) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.58	D
BayesDel_noAF	Pathogenic	0.60
CADD	Pathogenic	44
DANN	Uncertain	1.0
Eigen	Pathogenic	0.73
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Uncertain	0.94	D
Vest4		0.24
GERP RS		2.0

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

Other links and lift over

dbSNP: rs587776942; hg19: chr18-43447707;