Is COMP p.Val166Met (c.496G>A) pathogenic?

COMP p.Val166Met (c.496G>A) is classified Uncertain significance in COMP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-20). AlphaMissense: likely benign (0.1156); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with COMP p.Val166Met (c.496G>A)?

COMP p.Val166Met (c.496G>A) is associated with Inborn genetic diseases (ClinVar).

How common is COMP p.Val166Met (c.496G>A) in the general population?

COMP p.Val166Met (c.496G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about COMP p.Val166Met (c.496G>A)?

AlphaMissense predicts likely benign (score 0.1156) — an in-silico prediction, not a clinical call.

COMP p.Val166Met

c.496G>A · VCV4616372

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1156 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,568,432)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1156	likely benign
REVEL	0.5	indeterminate
SaProt	LLR -8.74	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 4.7	GERP 0.92, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 8,351 bp · p 2.2e-07 · regional, not allelic
Overall
CADD	23.7	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

No allele count reported in gnomAD v4.1 (AN 1,568,432). This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: COMP
Protein: p.Val166Met
Coding: c.496G>A
MANE Select: NM_000095
Type: single nucleotide variant
Location: chr19:18789192 (GRCh38)
Gene constraint: LOEUF 1.073 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 88.60 · 1 PDB
Residue 166: the egf-like 2; calcium-binding domain; a disulfide bond

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

COMP p.Val166= Likely benign ★ same residue
COMP p.Arg247Ser Uncertain significance ★★ ⚠ same condition
COMP p.Arg352Trp Uncertain significance ★★ ⚠ same condition
COMP p.Arg379Gln Uncertain significance ★★ ⚠ same condition
COMP p.Arg381Leu Uncertain significance ★★ ⚠ same condition
COMP p.Arg665Trp Uncertain significance ★★ ⚠ same condition
COMP p.Arg689Trp Uncertain significance ★★ ⚠ same condition
COMP p.Arg721His Uncertain significance ★★ ⚠ 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/comp-p-val166met (accessed [today's date]).

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