NM_001415.4:c.665T>C

Variant names:

• chrX-24064228-T-C
• rs886040855
• NM_001415.4:c.665T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2 PP2 PP3_Strong PP5

The NM_001415.4(EIF2S3):​c.665T>C​(p.Ile222Thr) 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 23)
• Consequence: EIF2S3 NM_001415.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.60
• Publications: 7 publications found

Genes affected

EIF2S3 (HGNC:3267): (eukaryotic translation initiation factor 2 subunit gamma) The protein encoded by this gene is the largest subunit of a heterotrimeric GTP-binding protein involved in the recruitment of methionyl-tRNA(i) to the 40 S ribosomal subunit. [provided by RefSeq, Jan 2010]

EIF2S3 Gene-Disease associations (from GenCC):

• MEHMO syndrome

  Inheritance: XL, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp
• diabetes mellitus

  Inheritance: XL Classification: STRONG Submitted by: Genomics England PanelApp

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 7 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Gene score misZ: 3.6078 (above the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to MEHMO syndrome, diabetes mellitus.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.943
• PP5: Variant X-24064228-T-C is Pathogenic according to our data. Variant chrX-24064228-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 267205.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001415.4. 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
	EIF2S3	NM_001415.4	MANE Select	c.665T>C	p.Ile222Thr	missense	Exon 7 of 12	NP_001406.1	P41091

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EIF2S3	ENST00000253039.9	TSL:1 MANE Select	c.665T>C	p.Ile222Thr	missense	Exon 7 of 12	ENSP00000253039.4	P41091
	EIF2S3	ENST00000864815.1		c.665T>C	p.Ile222Thr	missense	Exon 7 of 12	ENSP00000534874.1
	EIF2S3	ENST00000971837.1		c.659T>C	p.Ile220Thr	missense	Exon 7 of 12	ENSP00000641896.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	MEHMO syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.43
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.55	D
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Pathogenic	0.46	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Uncertain	0.36	D
PhyloP100		7.6
PrimateAI	Pathogenic	0.94	D
PROVEAN	Uncertain	-4.0	D
REVEL	Pathogenic	0.80
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.97	D
Vest4		0.92
MutPred		0.79		Loss of stability (P = 0.0354)
MVP		0.99
MPC		3.2
ClinPred		1.0	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.94
gMVP		0.97
Mutation Taster		=8/92	disease causing (ClinVar)

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: rs886040855; hg19: chrX-24082345;