Is COMP p.Cys484Gly (c.1450T>G) pathogenic?

COMP p.Cys484Gly (c.1450T>G) is classified Likely pathogenic in COMP (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-06-02). AlphaMissense: likely pathogenic (0.9883); Absent from gnomAD v4.1; Associated with COMP-related disorder.

What condition is associated with COMP p.Cys484Gly (c.1450T>G)?

COMP p.Cys484Gly (c.1450T>G) is associated with COMP-related disorder (ClinVar).

How common is COMP p.Cys484Gly (c.1450T>G) in the general population?

COMP p.Cys484Gly (c.1450T>G) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about COMP p.Cys484Gly (c.1450T>G)?

AlphaMissense predicts likely pathogenic (score 0.9883) — an in-silico prediction, not a clinical call.

COMP p.Cys484Gly

c.1450T>G · VCV3723496

Likely pathogenic Multiple submitters

Classification

Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely pathogenic

0.9883 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

COMP-related disorder

Computational evidence

Protein change
AlphaMissense	0.9883	likely pathogenic ✓ concordant with ClinVar · top 10% in COMP
REVEL	0.952	strongly pathogenic-leaning
SaProt	LLR -13.41	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 2, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 8,351 bp · p 2.2e-07 · regional, not allelic
Overall
CADD	28.9	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: COMP
Protein: p.Cys484Gly
Coding: c.1450T>G
MANE Select: NM_000095
Type: single nucleotide variant
Location: chr19:18786004 (GRCh38)
Gene constraint: LOEUF 1.073 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 88.60 · 1 PDB
Residue 484: the 'disordered' region; a disulfide bond

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

Disease context

COMP-related disorder

Similar variants

COMP p.Cys484Arg Conflicting classifications of pathogenicity ★ ⚠ same residue
COMP p.Cys484Phe Uncertain significance ★ ⚠ same residue
COMP p.Cys484Ser Conflicting classifications of pathogenicity ★ ⚠ same residue
COMP p.Asn489Lys Pathogenic/Likely pathogenic ★★ same condition
COMP p.Asp326Asn Pathogenic/Likely pathogenic ★★ same condition
COMP p.Asp401Asn Pathogenic ★★ same condition
COMP p.Asp458Gly Pathogenic/Likely pathogenic ★★ same condition
COMP p.Asp507Gly Pathogenic/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/comp-p-cys484gly (accessed [today's date]).

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