Is ANO6 p.Arg46Ter (c.136C>T) pathogenic?

ANO6 p.Arg46Ter (c.136C>T) is classified Pathogenic in ANO6 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-02). Very rare (popmax 0.0022%, sas).

How common is ANO6 p.Arg46Ter (c.136C>T) in the general population?

ANO6 p.Arg46Ter (c.136C>T) is very rare (popmax 0.0022%, sas) (gnomAD).

ANO6 p.Arg46Ter

c.136C>T · VCV3713303

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Rare

very rare (popmax 0.0022%, sas)

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
NMD	predicted	premature termination codon in exon 2 of 20
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.4	GERP -0.031, phastCons 0.029
Overall
CADD	36.0	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

Grpmax group 0.0022% South Asian · 2/91,090 alleles

Filtering AF 0.000365% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000136%

Overall 0.000558% 9/1,613,766 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0022%	45,545
Remaining individualsnot grpmax-eligible	0.0016%	62,464
European (non-Finnish)	0.000509%	196,643

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: ANO6
Protein: p.Arg46Ter
Coding: c.136C>T
MANE Select: NM_001025356
Type: single nucleotide variant
Location: chr12:45302079 (GRCh38)
Gene constraint: LOEUF 1.02 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.00

Full ANO6 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

ANO6 p.Arg46Gln Conflicting classifications of pathogenicity ★ ⚠ same residue
ANO6 c.1387-1G>T Pathogenic ★★ same type
ANO6 p.Arg253Cys Uncertain significance ★★ ⚠ same type
ANO6 p.Arg253His Uncertain significance ★★ ⚠ same type
ANO6 p.Arg276Gln Uncertain significance ★★ ⚠ same type
ANO6 p.Arg399Cys Uncertain significance ★★ ⚠ same type
ANO6 p.Arg635Gln Uncertain significance ★★ ⚠ same type
ANO6 p.Arg648Leu Uncertain significance ★★ ⚠ same type

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/ano6-p-arg46ter (accessed [today's date]).

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