Is EVC2 p.Pro1135= (c.3405C>T) pathogenic?

EVC2 p.Pro1135= (c.3405C>T) is classified Likely benign in EVC2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-01-26). Ultra-rare (popmax 0.0349%, mid); Associated with acrofacial dysostosis, Weyers type.

What condition is associated with EVC2 p.Pro1135= (c.3405C>T)?

EVC2 p.Pro1135= (c.3405C>T) is associated with acrofacial dysostosis, Weyers type, Ellis-van Creveld syndrome (ClinVar).

How common is EVC2 p.Pro1135= (c.3405C>T) in the general population?

EVC2 p.Pro1135= (c.3405C>T) is ultra-rare (popmax 0.0349%, mid) (gnomAD).

EVC2 p.Pro1135=

c.3405C>T · rs776832054 · VCV1130489

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0349%, mid)

Conditions

acrofacial dysostosis, Weyers type

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP -20	GERP -4
Overall
CADD	0.011	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0349% Middle Eastern · 2/5,726 alleles

Filtering AF 0.00613% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0031%

Overall 0.00466% 75/1,608,590 alleles · ultra-rare exomes 69/1,456,528 · genomes 6/152,062 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0349%	2,863
African / African-American	0.00935%	10,695
Admixed American	0.00834%	11,987
Remaining individualsnot grpmax-eligible	0.00642%	15,587
South Asian	0.00443%	22,568
European (non-Finnish)	0.00441%	22,685
East Asian	0.00223%	44,830

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: EVC2
Protein: p.Pro1135=
Coding: c.3405C>T
MANE Select: NM_147127
dbSNP: rs776832054
Type: single nucleotide variant
Location: chr4:5568596 (GRCh38)
Gene constraint: LOEUF 1.092 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 73.33

Full EVC2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

acrofacial dysostosis, Weyers type — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: Ellis-van Creveld syndrome

Similar variants

EVC2 c.2046+1G>A Likely pathogenic ★★ same condition
EVC2 c.2047-2A>G Likely pathogenic ★★ same condition
EVC2 c.229-1G>T Likely pathogenic ★★ same condition
EVC2 c.229-2A>G Likely pathogenic ★★ same condition
EVC2 c.3360+1G>A Pathogenic ★★ same condition
EVC2 c.3659+2T>C Pathogenic/Likely pathogenic ★★ same condition
EVC2 c.450+2T>C Likely pathogenic ★★ same condition
EVC2 c.451-2A>G Likely pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/evc2-p-pro1135 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown