Is ANK2 p.Thr730= (c.2190A>T) pathogenic?

ANK2 p.Thr730= (c.2190A>T) is classified Conflicting classifications of pathogenicity in ANK2 (ClinVar, Conflicting submitters, 4 submitters; last evaluated 2025-06-04). Very rare (popmax 0.00339%, nfe); Associated with cardiac arrhythmia, ankyrin-B-related.

What condition is associated with ANK2 p.Thr730= (c.2190A>T)?

ANK2 p.Thr730= (c.2190A>T) is associated with cardiac arrhythmia, ankyrin-B-related, long QT syndrome (ClinVar).

How common is ANK2 p.Thr730= (c.2190A>T) in the general population?

ANK2 p.Thr730= (c.2190A>T) is very rare (popmax 0.00339%, nfe) (gnomAD).

How is Romano-Ward syndrome inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

ANK2 p.Thr730=

c.2190A>T · rs775084946 · VCV347313

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 4 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00339%, nfe)

Conditions

cardiac arrhythmia, ankyrin-B-related

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.38	GERP -4.9, phastCons 0.18
Overall
CADD	3.314	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00339% European (non-Finnish) · 40/1,179,740 alleles

Filtering AF 0.00255% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00225%

Overall 0.00328% 53/1,613,500 alleles · very rare exomes 33/1,461,390 · genomes 20/152,110 · joint denominator

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.0203%	4,920
European (non-Finnish)grpmax	0.00339%	29,493

Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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.Thr730=
Coding: c.2190A>T
MANE Select: NM_001148
dbSNP: rs775084946
Type: single nucleotide variant
Location: chr4:113288399 (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

cardiac arrhythmia, ankyrin-B-related — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: long QT syndrome

For Romano-Ward syndrome (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive
Onset: All ages
Prevalence: 1-5 / 10 000 (Europe)

Similar variants

ANK2 p.Thr730Lys Uncertain significance ★ same residue
ANK2 p.Arg1007Ter Pathogenic/Likely pathogenic ★★ same condition
ANK2 p.Arg1088Ter Pathogenic ★★ same condition
ANK2 p.Arg3113Ter 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
ANK2 c.2079+5T>G 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-thr730 (accessed [today's date]).

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