Is ANK2 p.Asn1122= (c.3366C>T) pathogenic?

ANK2 p.Asn1122= (c.3366C>T) is classified Benign/Likely benign in ANK2 (ClinVar, Multiple submitters, 14 submitters; last evaluated 2026-02-01). Rare (popmax 0.783%, afr); Associated with Cardiovascular phenotype.

What condition is associated with ANK2 p.Asn1122= (c.3366C>T)?

ANK2 p.Asn1122= (c.3366C>T) is associated with Cardiovascular phenotype, long QT syndrome, cardiac arrhythmia, ankyrin-B-related (ClinVar).

How common is ANK2 p.Asn1122= (c.3366C>T) in the general population?

ANK2 p.Asn1122= (c.3366C>T) is rare (popmax 0.783%, afr) (gnomAD).

ANK2 p.Asn1122=

c.3366C>T · rs114896457 · VCV238577

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 14 submitters

gnomAD v4.1

Rare

rare (popmax 0.783%, afr)

Conditions

Cardiovascular phenotype

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.351	indeterminate
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -12	GERP -4.6
Overall
CADD	0.314	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.783% African / African-American · 587/74,976 alleles

Filtering AF 0.73% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.71%

Overall 0.0776% 1,253/1,614,006 alleles · rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.783%	128
South Asian	0.39%	257
Middle Eastern	0.297%	337
Remaining individualsnot grpmax-eligible	0.109%	919
Admixed American	0.0967%	1,034
East Asian	0.0134%	7,480
European (non-Finnish)	0.0133%	7,516
Ashkenazi Jewishnot grpmax-eligible	0.0101%	9,869
Finnishnot grpmax-eligible	0.00156%	63,988

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.Asn1122=
Coding: c.3366C>T
MANE Select: NM_001148
dbSNP: rs114896457
Type: single nucleotide variant
Location: chr4:113333195 (GRCh38)
Gene constraint: LOEUF 0.271 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 1122: the zu5 1 domain; the 'interaction with sptbn1' region

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

Disease context

Cardiovascular phenotype — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: long QT syndrome cardiac arrhythmia, ankyrin-B-related

Similar variants

ANK2 p.Arg1007Ter Pathogenic/Likely pathogenic ★★ same condition
ANK2 p.Arg1088Ter Pathogenic ★★ same condition
ANK2 p.Arg3113Ter Pathogenic ★★ same condition
ANK2 p.Arg895Ter Pathogenic/Likely pathogenic ★★ same condition
ANK2 p.Arg977Ter Pathogenic ★★ same condition
ANK2 c.11032+11G>T Uncertain significance ★★ same condition
ANK2 c.11611-3T>A Uncertain significance ★★ same condition
ANK2 c.1783-3C>T 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-asn1122 (accessed [today's date]).

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