ANK1 p.Arg281Ter
c.841C>T · rs1829712320 · VCV994426
Pathogenic/Likely pathogenic
Multiple submitters
Classification
Pathogenic/Likely pathogenic
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 8 submitters
Consequence
nonsense (stop-gain)
predicted LoF
gnomAD v4.1
Absent
absent from gnomAD v4.1
Conditions
2
ANK1-related disorder
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation carries the signal. | ||
| Consequence | nonsense (stop-gain) | predicted loss-of-function in a LoF-intolerant gene |
|---|---|---|
| NMD | predicted | premature termination codon in exon 9 of 43 |
| Splicing | ||
| SpliceAI | — | not assessed · no allele here is in the release |
| Constraint at this position | ||
| Conservation | phyloP 6.4 | GERP 0.038, phastCons 1 |
| Overall | ||
| CADD | 38.0 | PHRED · no single calibrated threshold — expert panels disagree |
Predicted loss-of-function is descriptive, not an applied PVS1 code.
Population frequency
gnomAD v4.1 · exomes + genomes
Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.
Variant & gene context
- Gene
- ANK1
- Protein
- p.Arg281Ter
- Coding
- c.841C>T
- MANE Select
- NM_000037
- dbSNP
- rs1829712320
- Type
- single nucleotide variant
- Location
- chr8:41723193 (GRCh38)
- Gene constraint
- LOEUF 0.299 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 69.64 · 21 PDB
- Residue 281
- an α-helix; the '89 kda domain' region
Similar variants
- ANK1 c.1305+1G>A Pathogenic ★★ same condition
- ANK1 c.1405-9G>A Pathogenic/Likely pathogenic ★★ same condition
- ANK1 c.1702-2A>G Pathogenic/Likely pathogenic ★★ same condition
- ANK1 c.1801-17G>A Pathogenic/Likely pathogenic ★★ same condition
- ANK1 c.2296-1G>A Likely pathogenic ★★ same condition
- ANK1 c.2296-2A>G Pathogenic/Likely pathogenic ★★ same condition
- ANK1 c.2389-2A>G Likely pathogenic ★★ same condition
- ANK1 c.2462-2A>G Pathogenic ★★ 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-arg281ter (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown