Is CTR9 p.Arg394Gln (c.1181G>A) pathogenic?

CTR9 p.Arg394Gln (c.1181G>A) is classified Uncertain significance in CTR9 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-10-09). AlphaMissense: likely benign (0.2819); Very rare (popmax 0.00446%, eas).

How common is CTR9 p.Arg394Gln (c.1181G>A) in the general population?

CTR9 p.Arg394Gln (c.1181G>A) is very rare (popmax 0.00446%, eas) (gnomAD).

What do computational predictors say about CTR9 p.Arg394Gln (c.1181G>A)?

AlphaMissense predicts likely benign (score 0.2819) — an in-silico prediction, not a clinical call.

CTR9 p.Arg394Gln

c.1181G>A · rs780352403 · VCV1446337

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2819 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00446%, eas)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.2819	likely benign
REVEL	0.334	indeterminate
SaProt	LLR -5.98	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 12	GERP 2.1, phastCons 1
Regional constraint	o/e 0.54	unconstrained · MANE · 1,051 bp · p 1.2e-12 · regional, not allelic
Overall
CADD	25.9	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 0.00446% East Asian · 2/44,826 alleles

Filtering AF 0.00074% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00054%

Overall 0.000997% 16/1,604,028 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00446%	22,413
European (non-Finnish)	0.00119%	84,041

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: CTR9
Protein: p.Arg394Gln
Coding: c.1181G>A
MANE Select: NM_014633
dbSNP: rs780352403
Type: single nucleotide variant
Location: chr11:10763866 (GRCh38)
Gene constraint: LOEUF 0.368 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.62 · 21 PDB
Residue 394: an α-helix

Full CTR9 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CTR9 p.Asn455Ser Likely pathogenic ★★ same type
CTR9 p.Ile17Thr Pathogenic/Likely pathogenic ★★ same type
CTR9 p.Pro25Arg Pathogenic/Likely pathogenic ★★ same type
CTR9 c.1960+3G>A Uncertain significance ★★ same type
CTR9 c.2109+4A>G Uncertain significance ★★ same type
CTR9 c.2445-3T>C Uncertain significance ★★ same type
CTR9 c.45+5G>T Uncertain significance ★★ same type
CTR9 c.593-8T>A 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/ctr9-p-arg394gln (accessed [today's date]).

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