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AHNAK p.Pro809=

c.2427T>C · rs201133212 · VCV786828

Likely benign Multiple submitters
Classification
Likely benign
ClinVar
Review
Multiple submitters ★★☆☆
ClinVar · 2 submitters
gnomAD v4.1
Rare
ultra-rare (popmax 0.0822%, mid)

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
ConservationphyloP -1.2GERP -3.9
Overall
CADD0.223PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0822% Middle Eastern · 5/6,084 alleles
Filtering AF 0.0696% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.068%
Overall 0.0591% 954/1,613,800 alleles · ultra-rare exomes 889/1,461,894 · genomes 65/151,906 · joint denominator
Ancestry group Frequency 1 in
Middle Easterngrpmax 0.0822% 1,217
Remaining individualsnot grpmax-eligible 0.0784% 1,275
European (non-Finnish) 0.0737% 1,356
Finnishnot grpmax-eligible 0.025% 4,000
African / African-American 0.00802% 12,471
Ashkenazi Jewishnot grpmax-eligible 0.00676% 14,803
Admixed American 0.00667% 14,995
South Asian 0.0022% 45,530

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
AHNAK
Protein
p.Pro809=
Coding
c.2427T>C
MANE Select
NM_001620
dbSNP
rs201133212
Type
single nucleotide variant
Location
chr11:62531990 (GRCh38)
Gene constraint
LOEUF 0.793 · pLI <0.01 (gnomAD)
Full AHNAK gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/ahnak-p-pro809 (accessed [today's date]).

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