Is CTR9 p.Arg832Cys (c.2494C>T) pathogenic?

CTR9 p.Arg832Cys (c.2494C>T) is classified Uncertain significance in CTR9 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-02-22). AlphaMissense: likely pathogenic (0.94); Very rare (popmax 8.48e-05%, nfe).

How common is CTR9 p.Arg832Cys (c.2494C>T) in the general population?

CTR9 p.Arg832Cys (c.2494C>T) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

What do computational predictors say about CTR9 p.Arg832Cys (c.2494C>T)?

AlphaMissense predicts likely pathogenic (score 0.94) — an in-silico prediction, not a clinical call.

CTR9 p.Arg832Cys

c.2494C>T · rs2539389585 · VCV2983068

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.94 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

Missense predictors

2/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.94	likely pathogenic
REVEL	0.374	indeterminate
SaProt	LLR -12.36	damaging
⇒ AlphaMissense and SaProt both call this damaging; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.7	GERP 1.9, phastCons 1
Regional constraint	o/e 0.67	unconstrained · MANE · 2,375 bp · p 3.7e-05 · regional, not allelic
Overall
CADD	33.0	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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 8.48e-05% European (non-Finnish) · 1/1,178,554 alleles

Overall 6.85e-05% 1/1,458,952 alleles · very rare

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.Arg832Cys
Coding: c.2494C>T
MANE Select: NM_014633
dbSNP: rs2539389585
Type: single nucleotide variant
Location: chr11:10772569 (GRCh38)
Gene constraint: LOEUF 0.368 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.62 · 21 PDB
Residue 832: 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-arg832cys (accessed [today's date]).

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