Is ENOSF1 p.Cys67Ser (c.200G>C) pathogenic?

ENOSF1 p.Cys67Ser (c.200G>C) is classified Uncertain significance in ENOSF1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-30). AlphaMissense: likely benign (0.1778); Very rare (popmax 0.00135%, afr).

How common is ENOSF1 p.Cys67Ser (c.200G>C) in the general population?

ENOSF1 p.Cys67Ser (c.200G>C) is very rare (popmax 0.00135%, afr) (gnomAD).

What do computational predictors say about ENOSF1 p.Cys67Ser (c.200G>C)?

AlphaMissense predicts likely benign (score 0.1778) — an in-silico prediction, not a clinical call.

ENOSF1 p.Cys67Ser

c.200G>C · VCV4249126

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1778 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00135%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1778	likely benign
REVEL	0.179	moderately benign-leaning
SaProt	LLR -2.74	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.8	GERP 1.6, phastCons 1
Regional constraint	o/e 1.06	unconstrained · MANE · 38 kb · p 0.14 · regional, not allelic
Overall
CADD	20.4	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00135% African / African-American · 1/74,238 alleles

Overall 0.000667% 1/149,936 alleles · very rare

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: ENOSF1
Protein: p.Cys67Ser
Coding: c.200G>C
MANE Select: NM_017512
Type: single nucleotide variant
Location: chr18:697349 (GRCh38)
Gene constraint: LOEUF 1.236 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 97.47 · 1 PDB
Residue 67: an α-helix

Full ENOSF1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ENOSF1 c.*1219T>C Benign ★★ same type
TYMS c.556+1G>A Pathogenic ★ same type
TYMS p.Arg271Ter Pathogenic ★ same type
ENOSF1 c.84+108G>C Uncertain significance ★ same type
ENOSF1 c.84+112A>C Uncertain significance ★ same type
ENOSF1 c.84+114C>G Uncertain significance ★ same type
ENOSF1 c.84+125T>C Uncertain significance ★ same type
ENOSF1 c.84+130A>C Uncertain significance ★ same type

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/enosf1-p-cys67ser (accessed [today's date]).

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