Is ANK2 p.Ser3818= (c.11454C>T) pathogenic?

ANK2 p.Ser3818= (c.11454C>T) is classified Likely benign in ANK2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-02-05). Ultra-rare (popmax 0.0134%, eas); Associated with Cardiovascular phenotype.

What condition is associated with ANK2 p.Ser3818= (c.11454C>T)?

ANK2 p.Ser3818= (c.11454C>T) is associated with Cardiovascular phenotype, long QT syndrome (ClinVar).

How common is ANK2 p.Ser3818= (c.11454C>T) in the general population?

ANK2 p.Ser3818= (c.11454C>T) is ultra-rare (popmax 0.0134%, eas) (gnomAD).

ANK2 p.Ser3818=

c.11454C>T · rs778361140 · VCV643024

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0134%, eas)

Conditions

Cardiovascular phenotype

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 -10	GERP -5.6
Overall
CADD	0.05	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0134% East Asian · 6/44,884 alleles

Filtering AF 0.00594% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00453%

Overall 0.00254% 41/1,614,008 alleles · ultra-rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0134%	7,481
South Asian	0.011%	9,107
Remaining individualsnot grpmax-eligible	0.0064%	15,622
European (non-Finnish)	0.00169%	59,001
Finnishnot grpmax-eligible	0.00156%	64,028

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.Ser3818=
Coding: c.11454C>T
MANE Select: NM_001148
dbSNP: rs778361140
Type: single nucleotide variant
Location: chr4:113369649 (GRCh38)
Gene constraint: LOEUF 0.271 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Residue 3818: the 'disordered' 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

Similar variants

ANK2 p.Ser3818Asn Uncertain significance ★★ ⚠ same residue
ANK2 p.Ser3818Arg Uncertain significance ★ same residue
ANK2 p.Arg3113Ter Pathogenic ★★ same condition
ANK2 p.Arg895Ter Pathogenic/Likely pathogenic ★★ same condition
ANK2 p.Arg977Ter 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

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-ser3818 (accessed [today's date]).

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