Is COPA p.Gly901Arg (c.2701G>A) pathogenic?

COPA p.Gly901Arg (c.2701G>A) is classified Uncertain significance in COPA (ClinVar, Multiple submitters, 3 submitters; last evaluated 2024-07-09). AlphaMissense: ambiguous (0.445); Ultra-rare (popmax 0.033%, mid); Associated with autoimmune interstitial lung disease-arthritis syndrome.

What condition is associated with COPA p.Gly901Arg (c.2701G>A)?

COPA p.Gly901Arg (c.2701G>A) is associated with autoimmune interstitial lung disease-arthritis syndrome (ClinVar).

How common is COPA p.Gly901Arg (c.2701G>A) in the general population?

COPA p.Gly901Arg (c.2701G>A) is ultra-rare (popmax 0.033%, mid) (gnomAD).

What do computational predictors say about COPA p.Gly901Arg (c.2701G>A)?

AlphaMissense predicts ambiguous (score 0.445) — an in-silico prediction, not a clinical call.

COPA p.Gly901Arg

Q: How is Autoimmune interstitial lung disease-arthritis syndrome inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

c.2701G>A · VCV3495945

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

ambiguous

0.445 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.033%, mid)

Missense predictors

0/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

autoimmune interstitial lung disease-arthritis syndrome

Computational evidence

Protein change
AlphaMissense	0.445	ambiguous
REVEL	0.089	moderately benign-leaning
SaProt	LLR -8.79	tolerated
⇒ REVEL and SaProt both call this tolerated; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.3	GERP 1.9, phastCons 1
Regional constraint	o/e 0.72	unconstrained · MANE · 42 kb · p 1.1e-24 · regional, not allelic
Overall
CADD	22.7	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

Grpmax group 0.033% Middle Eastern · 2/6,066 alleles

Filtering AF 0.00581% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00242%

Overall 0.000746% 12/1,607,962 alleles · ultra-rare

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.033%	3,033
Remaining individualsnot grpmax-eligible	0.00322%	31,092
European (non-Finnish)	0.000679%	147,268

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: COPA
Protein: p.Gly901Arg
Coding: c.2701G>A
MANE Select: NM_004371
Type: single nucleotide variant
Location: chr1:160293439 (GRCh38)
Gene constraint: LOEUF 0.098 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 83.85 · 3 PDB

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

Disease context

autoimmune interstitial lung disease-arthritis syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Autoimmune interstitial lung disease-arthritis syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Childhood, Infancy

Similar variants

COPA p.Arg233His Pathogenic/Likely pathogenic ★★ same condition
COPA p.Glu241Lys Pathogenic ★★ same condition
COPA p.Ala111Thr Uncertain significance ★★ ⚠ same condition
COPA p.Ala176Val Uncertain significance ★★ ⚠ same condition
COPA p.Ala407Val Uncertain significance ★★ ⚠ same condition
COPA p.Ala422Thr Uncertain significance ★★ ⚠ same condition
COPA p.Ala469Val Uncertain significance ★★ ⚠ same condition
COPA p.Ala510Thr 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/copa-p-gly901arg (accessed [today's date]).

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