Is ANK1 p.Arg1777Pro (c.5330G>C) pathogenic?

ANK1 p.Arg1777Pro (c.5330G>C) is classified Uncertain significance in ANK1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-08-13). AlphaMissense: likely benign (0.1182); Very rare (popmax 0.000932%, nfe); Associated with Inborn genetic diseases.

What condition is associated with ANK1 p.Arg1777Pro (c.5330G>C)?

ANK1 p.Arg1777Pro (c.5330G>C) is associated with Inborn genetic diseases (ClinVar).

How common is ANK1 p.Arg1777Pro (c.5330G>C) in the general population?

ANK1 p.Arg1777Pro (c.5330G>C) is very rare (popmax 0.000932%, nfe) (gnomAD).

What do computational predictors say about ANK1 p.Arg1777Pro (c.5330G>C)?

AlphaMissense predicts likely benign (score 0.1182) — an in-silico prediction, not a clinical call.

ANK1 p.Arg1777Pro

c.5330G>C · VCV4096035

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1182 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000932%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1182	likely benign
REVEL	0.283	benign-leaning
SaProt	LLR -6.52	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -7.3	GERP -3
Regional constraint	o/e 0.93	unconstrained · MANE · 23 kb · p 0.11 · regional, not allelic
Overall
CADD	0.04	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 0.000932% European (non-Finnish) · 11/1,180,050 alleles

Filtering AF 0.0005% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000366%

Overall 0.000681% 11/1,614,088 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: ANK1
Protein: p.Arg1777Pro
Coding: c.5330G>C
MANE Select: NM_000037
Type: single nucleotide variant
Location: chr8:41668331 (GRCh38)
Gene constraint: LOEUF 0.299 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 69.64 · 21 PDB
Residue 1777: the '55 kda regulatory domain' region; the 'disordered' region

Full ANK1 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

ANK1 p.Ala1590Thr Uncertain significance ★★ ⚠ same condition
ANK1 p.Ala1659Val Uncertain significance ★★ ⚠ same condition
ANK1 p.Ala1789Thr Uncertain significance ★★ ⚠ same condition
ANK1 p.Ala329Ser Uncertain significance ★★ ⚠ same condition
ANK1 p.Ala543Val Uncertain significance ★★ ⚠ same condition
ANK1 p.Arg1148Gln Uncertain significance ★★ ⚠ same condition
ANK1 p.Arg1255His Uncertain significance ★★ ⚠ same condition
ANK1 p.Arg1319Trp 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/ank1-p-arg1777pro (accessed [today's date]).

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