Is ADARB2 p.Cys697Arg (c.2089T>C) pathogenic?

ADARB2 p.Cys697Arg (c.2089T>C) is classified Uncertain significance in ADARB2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-06-26). AlphaMissense: likely benign (0.1284); Very rare (popmax 0.000254%, nfe).

How common is ADARB2 p.Cys697Arg (c.2089T>C) in the general population?

ADARB2 p.Cys697Arg (c.2089T>C) is very rare (popmax 0.000254%, nfe) (gnomAD).

What do computational predictors say about ADARB2 p.Cys697Arg (c.2089T>C)?

AlphaMissense predicts likely benign (score 0.1284) — an in-silico prediction, not a clinical call.

ADARB2 p.Cys697Arg

c.2089T>C · VCV3493544

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1284 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000254%, nfe)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.1284	likely benign
REVEL	0.726	pathogenic-leaning
SaProt	LLR -3.75	tolerated
⇒ REVEL calls this damaging; AlphaMissense and SaProt do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.3	GERP -2.5, phastCons 1
Regional constraint	o/e 0.99	unconstrained · MANE · 554 kb · p 0.84 · regional, not allelic
Overall
CADD	18.81	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 0.000254% European (non-Finnish) · 3/1,180,028 alleles

Filtering AF 6.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.9e-05%

Overall 0.000205% 3/1,461,830 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: ADARB2
Protein: p.Cys697Arg
Coding: c.2089T>C
MANE Select: NM_018702
Type: single nucleotide variant
Location: chr10:1183324 (GRCh38)
Gene constraint: LOEUF 0.681 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 71.69
Residue 697: the a to i editase domain

Full ADARB2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ADARB2 p.Arg457His Uncertain significance ★★ ⚠ same type
ADARB2 p.Arg457Ser Uncertain significance ★★ ⚠ same type
ADARB2 p.Ala125= Likely benign ★★ same type
ADARB2 p.Arg328= Benign ★★ same type
ADARB2 p.Arg657Gln Benign ★★ same type
ADARB2 p.Glu300Lys Benign ★★ same type
ADARB2 p.Ser463= Benign ★★ same type
ADARB2 p.Val155= Benign ★★ 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/adarb2-p-cys697arg (accessed [today's date]).

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