Is ANK2 p.Arg2154His (c.6461G>A) pathogenic?

ANK2 p.Arg2154His (c.6461G>A) is classified Uncertain significance in ANK2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-02-12). AlphaMissense: likely benign (0.0901); Very rare (popmax 0.00549%, sas); Associated with long QT syndrome.

What condition is associated with ANK2 p.Arg2154His (c.6461G>A)?

ANK2 p.Arg2154His (c.6461G>A) is associated with long QT syndrome (ClinVar).

How common is ANK2 p.Arg2154His (c.6461G>A) in the general population?

ANK2 p.Arg2154His (c.6461G>A) is very rare (popmax 0.00549%, sas) (gnomAD).

What do computational predictors say about ANK2 p.Arg2154His (c.6461G>A)?

AlphaMissense predicts likely benign (score 0.0901) — an in-silico prediction, not a clinical call.

ANK2 p.Arg2154His

c.6461G>A · rs752318984 · VCV222500

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0901 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00549%, sas)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Conditions

long QT syndrome

Computational evidence

Protein change
AlphaMissense	0.0901	likely benign
REVEL	0.276	benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.9, phastCons 1
Regional constraint	o/e 0.97	unconstrained · MANE · 28 kb · p 0.16 · regional, not allelic
Overall
CADD	26.5	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 0.00549% South Asian · 5/91,074 alleles

Filtering AF 0.0021% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00136%

Overall 0.000958% 14/1,461,804 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00549%	18,215
Admixed American	0.005%	20,006
Finnishnot grpmax-eligible	0.00469%	21,344
East Asian	0.00223%	44,842
African / African-American	0.00133%	75,038
European (non-Finnish)	8.47e-05%	1,179,994

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: ANK2
Protein: p.Arg2154His
Coding: c.6461G>A
MANE Select: NM_001148
dbSNP: rs752318984
Type: single nucleotide variant
Location: chr4:113355079 (GRCh38)
Gene constraint: LOEUF 0.271 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)

Full ANK2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

long QT syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

ANK2 p.Arg2154Cys Conflicting classifications of pathogenicity ★ ⚠ same residue
ANK2 p.Arg3113Ter Pathogenic ★★ same condition
ANK2 c.11611-3T>A Uncertain significance ★★ same condition
ANK2 c.1783-3C>T Uncertain significance ★★ same condition
ANK2 c.2079+5T>G Uncertain significance ★★ same condition
ANK2 c.2278-3C>T Uncertain significance ★★ same condition
ANK2 c.3125+6G>A Uncertain significance ★★ same condition
ANK2 c.693+6G>A 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/ank2-p-arg2154his (accessed [today's date]).

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