ECE1

Chr 1ADMulti

endothelin converting enzyme 1

Also known as: ECE

The protein converts big endothelin-1 to endothelin-1, a vasoactive peptide important for vascular tone and development. Mutations cause Hirschsprung disease with cardiac defects and autonomic dysfunction, with autosomal dominant inheritance. This gene is highly constrained against loss-of-function variation (pLI 0.96), reflecting its critical role in cardiovascular and enteric nervous system development.

OMIMResearchSummary from RefSeq, OMIM, UniProt
LOFmechanismAD/MultiLOEUF 0.322 OMIM phenotypes
Clinical SummaryECE1
Population Constraint (gnomAD)
Highly constrained gene — heterozygous loss-of-function variants are very rare in the population (pLI 0.96). One damaged copy is likely sufficient to cause disease.
📋
ClinVar Variants
13 unique Pathogenic / Likely Pathogenic· 105 VUS of 191 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint
0.32LOEUF
pLI 0.960
Z-score 4.91
OE 0.17 (0.100.32)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint
2.31Z-score
OE missense 0.70 (0.630.76)
315 obs / 453.2 exp
Mild constraint

Moderately missense-constrained (top ~2.5%)

Observed / Expected Ratios
LoF OE0.17 (0.100.32)
00.351.4
Missense OE0.70 (0.630.76)
00.61.4
Synonymous OE0.99
01.21.6
LoF obs/exp: 7 / 40.9Missense obs/exp: 315 / 453.2Syn Z: 0.09
DN
0.4189th %ile
GOF
0.5759th %ile
LOF
0.4726th %ile

The Badonyi & Marsh model scores gain-of-function highest, but genomic evidence most strongly supports loss-of-function (haploinsufficiency) as the primary mechanism.

LOF1 literature citation · LOEUF 0.32

Literature Evidence

LOFA loss-of-function mutation in the endothelin-converting enzyme 1 (ECE-1) associated with Hirschsprung disease, cardiac defects, and autonomic dysfunctionPMID:9915973

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312. Mechanism ranking also informed by gnomAD constraint, ClinVar, and ClinGen data.

ClinVar Variant Classifications

191 submitted variants in ClinVar

Classification Summary

Pathogenic9
Likely Pathogenic4
VUS105
Likely Benign31
Benign14
Conflicting1
9
Pathogenic
4
Likely Pathogenic
105
VUS
31
Likely Benign
14
Benign
1
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
1
8
0
9
Likely Pathogenic
0
3
1
0
4
VUS
1
97
7
0
105
Likely Benign
0
6
5
20
31
Benign
0
3
6
5
14
Conflicting
1
Total11102725164

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

Protein Context — Lollipop Plot

ECE1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

3D Protein StructureAlphaFold

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
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