14-75003013-G-T

Variant names:

• chr14-75003013-G-T
• rs907307477
• NM_014239.4:c.23G>T

Variant summary

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

The NM_014239.4(EIF2B2):​c.23G>T​(p.Gly8Val) 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 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. G8S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: EIF2B2 NM_014239.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.75
• Publications: 0 publications found

Genes affected

EIF2B2 (HGNC:3258): (eukaryotic translation initiation factor 2B subunit beta) This gene encodes the beta subunit of eukaryotic initiation factor-2B (EIF2B). EIF2B is involved in protein synthesis and exchanges GDP and GTP for its activation and deactivation. [provided by RefSeq, Aug 2011]

EIF2B2 Gene-Disease associations (from GenCC):

• leukoencephalopathy with vanishing white matter

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Illumina, Genomics England PanelApp
• leukoencephalopathy with vanishing white matter 2

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• leukoencephalopathy with vanishing white matter

  Inheritance: AR Classification: STRONG Submitted by: G2P
• leukoencephalopathy with vanishing white matter 1

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• ovarioleukodystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

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=0.13450629).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014239.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EIF2B2	NM_014239.4	MANE Select	c.23G>T	p.Gly8Val	missense	Exon 1 of 8	NP_055054.1	Q53XC2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EIF2B2	ENST00000266126.10	TSL:1 MANE Select	c.23G>T	p.Gly8Val	missense	Exon 1 of 8	ENSP00000266126.5	P49770
	EIF2B2	ENST00000932124.1		c.23G>T	p.Gly8Val	missense	Exon 1 of 8	ENSP00000602183.1
	EIF2B2	ENST00000932126.1		c.23G>T	p.Gly8Val	missense	Exon 1 of 8	ENSP00000602185.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461812 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727220

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53364

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111998

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.086
BayesDel_addAF	Benign	-0.058	T
BayesDel_noAF	Benign	-0.32
CADD	Benign	14
DANN	Benign	0.55
DEOGEN2	Benign	0.085	T
Eigen	Benign	-0.60
Eigen_PC	Benign	-0.58
FATHMM_MKL	Benign	0.72	D
LIST_S2	Benign	0.62	T
M_CAP	Benign	0.060	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.64	T
MutationAssessor	Benign	1.2	L
PhyloP100		1.7
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-0.20	N
REVEL	Benign	0.17
Sift	Benign	0.25	T
Sift4G	Benign	0.23	T
Polyphen		0.013	B
Vest4		0.22
MutPred		0.35		Gain of helix (P = 0.0164)
MVP		0.97
MPC		0.56
ClinPred		0.17	T
GERP RS		0.84
PromoterAI		0.044	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.10
gMVP		0.35
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs907307477; hg19: chr14-75469716;