EFCC1

Chr 3

EF-hand and coiled-coil domain containing 1

Also known as: C3orf73, CCDC48

Predicted to enable calcium ion binding activity. [provided by Alliance of Genome Resources, Jul 2025]

ResearchGenerating clinical summary…
GOFmechanismLOEUF 1.18
Clinical SummaryEFCC1
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
108 VUS of 122 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.18LOEUF
pLI 0.000
Z-score 0.99
OE 0.74 (0.481.18)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.72Z-score
OE missense 0.88 (0.790.98)
239 obs / 272.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.74 (0.481.18)
00.351.4
Missense OE?0.88 (0.790.98)
00.61.4
Synonymous OE?1.02
01.21.6
LoF obs/exp: 13 / 17.5Missense obs/exp: 239 / 272.6Syn Z: -0.19

This gene — mechanism propensity

DN
0.6064th %ile
GOF
0.6930th %ile
LOF
0.3649th %ile

The highest-scoring mechanism for this gene is gain-of-function.

GOFprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

122 submitted variants in ClinVar

Classification Summary

VUS108
Likely Benign6
108
VUS
6
Likely Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
0
0
0
Likely Pathogenic
0
0
0
0
0
VUS
1
107
0
0
108
Likely Benign
0
4
0
2
6
Benign
0
0
0
0
0
Total111102114

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

View in ClinVar →

9 pathogenic / likely-pathogenic (of 13) ClinVar copy-number / structural variants overlap EFCC1 — these span large chromosomal regions, not the gene specifically, and are excluded from the counts above. Explore in CNV tools →

Protein Context — Lollipop Plot

EFCC1 · protein map & ClinVar variants

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

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →