X-20138622-C-A

Variant names:

• chrX-20138622-C-A
• NM_001412.4:c.17G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP2 PP3_Strong

The NM_001412.4(EIF1AX):​c.17G>T​(p.Gly6Val) variant causes a missense, splice region 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. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 22)
• Consequence: EIF1AX NM_001412.4 missense, splice_region
• Scores: Splicing: ADA: 0.9999
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.57

Genes affected

EIF1AX (HGNC:3250): (eukaryotic translation initiation factor 1A X-linked) This gene encodes an essential eukaryotic translation initiation factor. The protein is required for the binding of the 43S complex (a 40S subunit, eIF2/GTP/Met-tRNAi and eIF3) to the 5' end of capped RNA. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 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 1 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.3908 (below the threshold of 3.09).
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EIF1AX	NM_001412.4	c.17G>T	p.Gly6Val	missense_variant, splice_region_variant	Exon 2 of 7	ENST00000379607.10	NP_001403.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EIF1AX	ENST00000379607.10	c.17G>T	p.Gly6Val	missense_variant, splice_region_variant	Exon 2 of 7	1	NM_001412.4	ENSP00000368927.5
EIF1AX	ENST00000379593.1	c.17-2781G>T		intron_variant	Intron 1 of 5	3		ENSP00000368912.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 23

GnomAD4 genome Cov.: 22

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

See cases Uncertain:1

Dec 17, 2021

Institute of Human Genetics, University Hospital Muenster

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ACMG categories: PM2,PP2,PP3,BP1 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Benign	-0.018	T
BayesDel_noAF	Benign	-0.26
CADD	Pathogenic	31
DANN	Uncertain	0.99
DEOGEN2	Benign	0.34	T
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.92	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Uncertain	0.14	D
MutationAssessor	Uncertain	2.7	M
PrimateAI	Pathogenic	0.88	D
PROVEAN	Pathogenic	-7.3	D
REVEL	Uncertain	0.41
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.011	D
Polyphen		0.99	D
Vest4		0.52
MutPred		0.28		Loss of relative solvent accessibility (P = 0.0186);
MVP		0.58
MPC		2.1
ClinPred		1.0	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.77
gMVP		0.94
Mutation Taster		=6/94	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-20156740; COSMIC: COSV105919481; COSMIC: COSV105919481;