Is DCN p.Arg63Pro (c.188G>C) pathogenic?

DCN p.Arg63Pro (c.188G>C) is classified Uncertain significance in DCN (ClinVar, Single submitter, 1 submitter; last evaluated 2025-06-18). AlphaMissense: likely pathogenic (0.9781); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with DCN p.Arg63Pro (c.188G>C)?

DCN p.Arg63Pro (c.188G>C) is associated with Inborn genetic diseases (ClinVar).

How common is DCN p.Arg63Pro (c.188G>C) in the general population?

DCN p.Arg63Pro (c.188G>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about DCN p.Arg63Pro (c.188G>C)?

AlphaMissense predicts likely pathogenic (score 0.9781) — an in-silico prediction, not a clinical call.

DCN p.Arg63Pro

c.188G>C · VCV4238142

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9781 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.9781	likely pathogenic
REVEL	0.863	moderately pathogenic-leaning
SaProt	LLR -9.65	tolerated
⇒ AlphaMissense and REVEL call this damaging; SaProt does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6	GERP 2.5, phastCons 1
Regional constraint	o/e 0.90	unconstrained · MANE · 32 kb · p 0.048 · regional, not allelic
Overall
CADD	32.0	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: DCN
Protein: p.Arg63Pro
Coding: c.188G>C
MANE Select: NM_001920
Type: single nucleotide variant
Location: chr12:91178365 (GRCh38)
Gene constraint: LOEUF 0.789 · pLI 0.14 (gnomAD)
Structure: AlphaFold pLDDT 88.60
Residue 63: a disulfide bond

Full DCN 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

DCN p.Lys320Arg Uncertain significance ★★ ⚠ same condition
DCN p.Ala238Thr Uncertain significance ★ ⚠ same condition
DCN p.Ala289Thr Uncertain significance ★ ⚠ same condition
DCN p.Arg345Gly Uncertain significance ★ ⚠ same condition
DCN p.Arg350Cys Uncertain significance ★ ⚠ same condition
DCN p.Arg350His Uncertain significance ★ ⚠ same condition
DCN p.Arg44Gly Uncertain significance ★ ⚠ same condition
DCN p.Arg57Cys 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/dcn-p-arg63pro (accessed [today's date]).

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