18-45910735-T-A

Variant names:

• chr18-45910735-T-A
• rs775284965
• NM_020964.3:c.3991A>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020964.3(EPG5):​c.3991A>T​(p.Ile1331Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,460,990 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I1331V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: EPG5 NM_020964.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.91
• Publications: 0 publications found

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]

EPG5 Gene-Disease associations (from GenCC):

• Vici syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07264167).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EPG5	NM_020964.3	c.3991A>T	p.Ile1331Leu	missense_variant	Exon 23 of 44	ENST00000282041.11	NP_066015.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EPG5	ENST00000282041.11	c.3991A>T	p.Ile1331Leu	missense_variant	Exon 23 of 44	1	NM_020964.3	ENSP00000282041.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1460990 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726834

African (AFR) AF: 0.00 AC: 0 AN: 33428

American (AMR) AF: 0.00 AC: 0 AN: 44664

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26126

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86184

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53336

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

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111436

Other (OTH) AF: 0.00 AC: 0 AN: 60362

GnomAD4 genome Cov.: 32

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	18
DANN	Benign	0.94
DEOGEN2	Benign	0.0077	T;T
Eigen	Benign	-0.49
Eigen_PC	Benign	-0.35
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.89	.;D
M_CAP	Benign	0.0032	T
MetaRNN	Benign	0.073	T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	0.34	N;N
PhyloP100		1.9
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.85	N;.
REVEL	Benign	0.066
Sift	Benign	0.39	T;.
Sift4G	Uncertain	0.060	T;.
Polyphen		0.017	B;B
Vest4		0.26
MutPred		0.21		Loss of sheet (P = 0.1158);Loss of sheet (P = 0.1158);
MVP		0.25
MPC		0.15
ClinPred		0.20	T
GERP RS		0.054
Varity_R		0.078
gMVP		0.15
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs775284965; hg19: chr18-43490700;