17-44851717-C-CG

Variant names:

• chr17-44851717-C-CG
• NM_004247.4:c.2815dupC

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Moderate PM2 PP5_Moderate

The NM_004247.4(EFTUD2):​c.2815dupC​(p.Arg939ProfsTer2) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: EFTUD2 NM_004247.4 frameshift
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.76

Genes affected

EFTUD2 (HGNC:30858): (elongation factor Tu GTP binding domain containing 2) This gene encodes a GTPase which is a component of the spliceosome complex which processes precursor mRNAs to produce mature mRNAs. Mutations in this gene are associated with mandibulofacial dysostosis with microcephaly. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most 50 bp of the penultimate exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0356 CDS is truncated, and there are 2 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-44851717-C-CG is Pathogenic according to our data. Variant chr17-44851717-C-CG is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3358960.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFTUD2	NM_004247.4	c.2815dupC	p.Arg939ProfsTer2	frameshift_variant	Exon 27 of 28	ENST00000426333.7	NP_004238.3
EFTUD2	NM_001258353.2	c.2815dupC	p.Arg939ProfsTer2	frameshift_variant	Exon 27 of 28		NP_001245282.1
EFTUD2	NM_001258354.2	c.2785dupC	p.Arg929ProfsTer2	frameshift_variant	Exon 27 of 28		NP_001245283.1
EFTUD2	NM_001142605.2	c.2710dupC	p.Arg904ProfsTer2	frameshift_variant	Exon 26 of 27		NP_001136077.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFTUD2	ENST00000426333.7	c.2815dupC	p.Arg939ProfsTer2	frameshift_variant	Exon 27 of 28	1	NM_004247.4	ENSP00000392094.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Mandibulofacial dysostosis-microcephaly syndrome Pathogenic:1

Apr 22, 2024

Institute of Human Genetics, University of Leipzig Medical Center

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Criteria applied: PVS1,PM2_SUP -

Computational scores

Source: dbNSFP v4.3

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-42929085;