NM_001958.5:c.364G>A

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong

The NM_001958.5(EEF1A2):c.364G>A(p.Glu122Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 34)

Consequence

EEF1A2
NM_001958.5 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:14

Conservation

PhyloP100: 7.80

Publications

21 publications found

Variant links:

Genes affected

EEF1A2 (HGNC:3192): (eukaryotic translation elongation factor 1 alpha 2) This gene encodes an isoform of the alpha subunit of the elongation factor-1 complex, which is responsible for the enzymatic delivery of aminoacyl tRNAs to the ribosome. This isoform (alpha 2) is expressed in brain, heart and skeletal muscle, and the other isoform (alpha 1) is expressed in brain, placenta, lung, liver, kidney, and pancreas. This gene may be critical in the development of ovarian cancer. [provided by RefSeq, Mar 2014]

EEF1A2 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
developmental and epileptic encephalopathy, 33
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
autosomal dominant non-syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
undetermined early-onset epileptic encephalopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

EEF1A2 links:

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ACMG classification

Classification was made for transcript

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

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_001958.5

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.957

PP5

Variant 20-63495062-C-T is Pathogenic according to our data. Variant chr20-63495062-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 192252.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
EEF1A2	NM_001958.5 link	c.364G>A	p.Glu122Lys	missense_variant	Exon 4 of 8	ENST00000217182.6	NP_001949.1	Q05639

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EEF1A2	ENST00000217182.6 link	c.364G>A	p.Glu122Lys	missense_variant	Exon 4 of 8	1	NM_001958.5	ENSP00000217182.3		Q05639

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.000286

Hom.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:14

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:5

May 01, 2021

CeGaT Center for Human Genetics Tuebingen

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 25, 2025

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); 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: 26682508, 3066688, 24697219, 28378778, 28911200, 19636410, 26740508, 23647072, 23033978, 27441201, 33057194, 34926809, 36939041, 35982159, 31477274, 32196822, 31785789, 35873028, 31440721, 34145886, 37471090) -

Apr 26, 2018

Department of Genetics, Robert DEBRE University Hospital

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Laboratoire de Génétique Moléculaire, CHU Bordeaux

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 23, 2020

Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Developmental and epileptic encephalopathy, 33

Pathogenic:4

Dec 28, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 122 of the EEF1A2 protein (p.Glu122Lys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with neurological disease, including epilepsy and intellectual disability (PMID: 24697219, 26682508, 27441201). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 192252). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt EEF1A2 protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects EEF1A2 function (PMID: 3066688). For these reasons, this variant has been classified as Pathogenic. -

Mar 08, 2023

Institute of Human Genetics Munich, TUM University Hospital

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Feb 18, 2015

Genetic Services Laboratory, University of Chicago

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 25, 2018

Génétique des Maladies du Développement, Hospices Civils de Lyon

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Intellectual disability, autosomal dominant 38

Pathogenic:3

Apr 01, 2015

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Oct 04, 2018

Baylor Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was determined to be pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. This variant has been previously reported as disease causing [PMID 24697219, 26682508, 27441201] -

Apr 14, 2025

Institute of Human Genetics, University of Leipzig Medical Center

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Criteria applied: PS4,PM1,PM2,PP2,PP3 -

Inborn genetic diseases

Pathogenic:1

Feb 28, 2017

Ambry Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

EEF1A2-related developmental and degenerative epileptic-dyskinetic encephalopathy

Pathogenic:1

Feb 13, 2020

Epilepsy Neurogenetics Initiative, Children's Hospital of Philadelphia

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

The EEF1A2 c.364G>A; p.Glu122Lys variant has been identified in three individuals with a developmental and epileptic encephalopathy characterized by global developmental delays, moderate to severe intellectual disability, and intractable infantile or early childhood onset epilepsy. One individual had a hyperkinetic movement disorder characterized by choreoathetosis. The variant is confirmed de novo in two individuals; testing of both parents was not performed in the third individual. The variant is absent from population databases (ExAC, gnomAD) and is predicted to have a damaging effect on the protein by in silico models. Therefore, this variant has been classified as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Uncertain

0.16

BayesDel_noAF

Uncertain

-0.010

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.78

D;.;.

Eigen

Uncertain

0.67

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.96

D;D;D

MetaSVM

Benign

-0.34

MutationAssessor

Uncertain

2.6

M;.;.

PhyloP100

7.8

PrimateAI

Pathogenic

0.94

PROVEAN

Uncertain

-2.8

D;.;.

REVEL

Pathogenic

0.83

Sift

Pathogenic

0.0

D;.;.

Sift4G

Uncertain

0.0030

D;.;.

Polyphen

1.0

D;.;.

Vest4

0.97

MutPred

0.86

Gain of methylation at E122 (P = 0.0026);Gain of methylation at E122 (P = 0.0026);Gain of methylation at E122 (P = 0.0026);

MVP

0.67

MPC

3.1

ClinPred

0.99

GERP RS

3.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.81

gMVP

1.0

Mutation Taster

=4/96

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over