2-232483452-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_004826.4(ECEL1):c.1470G>A(p.Trp490*) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,612,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

ECEL1
NM_004826.4 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:11

Conservation

PhyloP100: 7.91

Variant links:

Genes affected

ECEL1 (HGNC:3147): (endothelin converting enzyme like 1) This gene encodes a member of the M13 family of endopeptidases. Members of this family are zinc-containing type II integral-membrane proteins that are important regulators of neuropeptide and peptide hormone activity. Mutations in this gene are associated with autosomal recessive distal arthrogryposis, type 5D. This gene has multiple pseudogenes on chromosome 2. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2014]

ECEL1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 2-232483452-C-T is Pathogenic according to our data. Variant chr2-232483452-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 374305.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-232483452-C-T is described in Lovd as [Pathogenic]. Variant chr2-232483452-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ECEL1	NM_004826.4 link	c.1470G>A	p.Trp490*	stop_gained	Exon 8 of 18	ENST00000304546.6	NP_004817.2	O95672-1A0A6F7YIA8
ECEL1	NM_001290787.2 link	c.1470G>A	p.Trp490*	stop_gained	Exon 8 of 18		NP_001277716.1	O95672-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ECEL1	ENST00000304546.6 link	c.1470G>A	p.Trp490*	stop_gained	Exon 8 of 18	1	NM_004826.4	ENSP00000302051.1	O95672-1
ECEL1	ENST00000409941.1 link	c.1470G>A	p.Trp490*	stop_gained	Exon 7 of 17	1		ENSP00000386333.1	O95672-2
ECEL1	ENST00000482346.1 link	n.1781G>A		non_coding_transcript_exon_variant	Exon 7 of 17	2

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000360

AC:

AN:

249870

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135178

show subpopulations

Gnomad AFR exome

AF:

0.000494

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1460216

Hom.:

Cov.:

AF XY:

0.00000964

AC XY:

AN XY:

726466

show subpopulations

Gnomad4 AFR exome

AF:

0.000508

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000112

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74490

show subpopulations

Gnomad4 AFR

AF:

0.000361

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000188

Hom.:

Bravo

AF:

0.000212

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:11

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Distal arthrogryposis type 5D

Pathogenic:7

Pathogenic, no assertion criteria provided	clinical testing	Biochemical Molecular Genetic Laboratory, King Abdulaziz Medical City	Feb 05, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 14, 2022	The ECEL1 c.1470G>A; p.Trp490Ter variant (rs149459910) is reported in the literature in the compound heterozygous and homozygous states in individuals with distal arthrogryposis (AlBanji 2020, Dieterich 2013, Posey 2017). This variant is found in the African/African-American population with an allele frequency of 0.048% (12/24910 alleles) in the Genome Aggregation Database ; it is also reported in ClinVar (Variation ID: 374305). This variant induces an early termination codon and is predicted to result in a truncated protein or mRNA subject to nonsense-mediated decay. Based on available information, this variant is considered to be pathogenic. References: AlBanji MH et al. Utility of Hypotonia Diagnostic Investigations: A 12-year Single Center Study. Mol Genet Metab Rep. 2020 Oct 21;25:100665. PMID: 33101984 Dieterich K et al. The neuronal endopeptidase ECEL1 is associated with a distinct form of recessive distal arthrogryposis. Hum Mol Genet. 2013 Apr 15;22(8):1483-92. PMID: 23236030. Posey JE et al. Resolution of Disease Phenotypes Resulting from Multilocus Genomic Variation. N Engl J Med. 2017 Jan 5;376(1):21-31. PMID: 27959697 -
Pathogenic, criteria provided, single submitter	clinical testing	Molecular Genetics Lab, CHRU Brest	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Baylor Genetics	Sep 29, 2014	Our laboratory reported dual molecular diagnoses in ARHGEF10 (NM_014629.2, c.1456dup and c.2063G>A in trans) and ECEL1 (NM_004826.2, c.1470G>A) in this individual reported to have features of delayed motor milestones, dysmorphic features, joint contracture at elbow, knee and small joints and camptodactyly. Compound heterozygous pathogenic variants including c.1470G>A (p.W490X) have been previously reported in a patient with recessive form of distal arthrogryposis (PMID 23236030). Heterozygotes for this variant would be expected to be asymptomatic carriers. -
Pathogenic, criteria provided, single submitter	clinical testing	DASA	Jan 05, 2022	The c.1470G>A;p.(Trp490) variant creates a premature translational stop signal in the ECEL1 gene. It is expected to result in an absent or disrupted protein product - PVS1.This sequence change has been observed in affected individual(s) and ClinVar contains an entry for this variant(ClinVar ID: 374305; PMID: 23236030) - PS4_moderate. The variant is present at low allele frequencies population databases (rs149459910 – gnomAD 0.01117%; ABraOM no frequency- http://abraom.ib.usp.br/) -PM2_supporting. The p.(Trp490) was detected in trans with a pathogenic variant (PMID: 23236030) - PM3. In summary, the currently available evidence indicates that the variant is pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Pathology and Clinical Laboratory Medicine, King Fahad Medical City	-	- -
Pathogenic, criteria provided, single submitter	research	Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre	Mar 17, 2024	- -

not provided

Pathogenic:3

Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Sep 09, 2022	Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 27959697, 33491998, 23236030, 30131190, 31127727, 33101984, 33672664) -
Pathogenic, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

See cases

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein

Jun 11, 2019

ACMG classification criteria: PVS1, PM1, PP5, BS1 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.65

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.98

Vest4

0.83

GERP RS

4.3

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over