Genetic Variant ECEL1:p.Met766Thr (chr2-232480184-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_004826.4(ECEL1):c.2297T>C(p.Met766Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000242 in 1,613,716 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

ECEL1
NM_004826.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.75

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.935

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ECEL1	NM_004826.4 link	c.2297T>C	p.Met766Thr	missense_variant	Exon 18 of 18	ENST00000304546.6	NP_004817.2	O95672-1A0A6F7YIA8
ECEL1	NM_001290787.2 link	c.2291T>C	p.Met764Thr	missense_variant	Exon 18 of 18		NP_001277716.1	O95672-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ECEL1	ENST00000304546.6 link	c.2297T>C	p.Met766Thr	missense_variant	Exon 18 of 18	1	NM_004826.4	ENSP00000302051.1	O95672-1
ECEL1	ENST00000409941.1 link	c.2291T>C	p.Met764Thr	missense_variant	Exon 17 of 17	1		ENSP00000386333.1	O95672-2
ECEL1	ENST00000411860.5 link	c.476T>C	p.Met159Thr	missense_variant	Exon 6 of 6	3		ENSP00000412683.1	H7C3M0
ECEL1	ENST00000482346.1 link	n.2608T>C		non_coding_transcript_exon_variant	Exon 17 of 17	2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151922

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000233

AC:

AN:

1461794

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

727218

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000297

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000329

AC:

AN:

151922

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

74208

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000589

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000986

Hom.:

Bravo

AF:

0.0000340

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Aug 04, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2297T>C (p.M766T) alteration is located in exon 18 (coding exon 17) of the ECEL1 gene. This alteration results from a T to C substitution at nucleotide position 2297, causing the methionine (M) at amino acid position 766 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.93

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.48

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.84

D;D;.

Eigen

Pathogenic

0.90

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Pathogenic

0.77

MetaRNN

Pathogenic

0.94

D;D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.4

.;M;.

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-5.7

D;D;D

REVEL

Pathogenic

0.97

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

0.98, 1.0

.;D;D

Vest4

0.92, 0.94

MVP

0.95

MPC

0.65

ClinPred

1.0

GERP RS

5.2

Varity_R

0.93

gMVP

0.93

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