Is ANO5 p.Ala644Ser (c.1930G>T) pathogenic?

ANO5 p.Ala644Ser (c.1930G>T) is classified Uncertain significance in ANO5 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2020-12-19). AlphaMissense: likely benign (0.1046); Very rare (popmax 0.00167%, amr); Associated with autosomal recessive limb-girdle muscular dystrophy type 2L.

How common is ANO5 p.Ala644Ser (c.1930G>T) in the general population?

ANO5 p.Ala644Ser (c.1930G>T) is very rare (popmax 0.00167%, amr) (gnomAD).

What do computational predictors say about ANO5 p.Ala644Ser (c.1930G>T)?

AlphaMissense predicts likely benign (score 0.1046) — an in-silico prediction, not a clinical call.

ANO5 p.Ala644Ser

Q: What condition is associated with ANO5 p.Ala644Ser (c.1930G>T)?

ANO5 p.Ala644Ser (c.1930G>T) is associated with autosomal recessive limb-girdle muscular dystrophy type 2L, gnathodiaphyseal dysplasia (ClinVar).

Q: How is Anoctamin-5-related limb-girdle muscular dystrophy R12 inherited?

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

c.1930G>T · rs1302354806 · VCV1011825

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1046 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

autosomal recessive limb-girdle muscular dystrophy type 2L

Computational evidence

Protein change
AlphaMissense	0.1046	likely benign
REVEL	0.067	moderately benign-leaning
SaProt	LLR -4.87	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.007	GERP -3.7, phastCons 0.39
Regional constraint	o/e 0.99	unconstrained · MANE · 86 kb · p 0.66 · regional, not allelic
Overall
CADD	12.84	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00167% Admixed American · 1/60,004 alleles

Filtering AF 0.000183% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00012%

Overall 0.000558% 9/1,614,010 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00167%	60,004
Finnishnot grpmax-eligible	0.00156%	64,020
South Asian	0.0011%	91,090
European (non-Finnish)	0.000508%	196,671

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: ANO5
Protein: p.Ala644Ser
Coding: c.1930G>T
MANE Select: NM_213599
dbSNP: rs1302354806
Type: single nucleotide variant
Location: chr11:22270343 (GRCh38)
Gene constraint: LOEUF 1.034 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 82.22
Residue 644: a UniProt-annotated variant site (in lgmdr12); a UniProt-annotated variant site (in lgmdr12; uncertain significance)

Full ANO5 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

autosomal recessive limb-girdle muscular dystrophy type 2L — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: gnathodiaphyseal dysplasia

For Anoctamin-5-related limb-girdle muscular dystrophy R12 (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood

Similar variants

ANO5 p.Ala644Pro Uncertain significance ★★ ⚠ same residue
ANO5 p.Ala644fs Pathogenic ★ same residue
ANO5 c.1898+1G>A Pathogenic ★★★ same condition
ANO5 c.41-1G>A Pathogenic ★★★ same condition
ANO5 p.Ala432Gly Pathogenic ★★★ ⚠ same condition
ANO5 p.Arg484Cys Likely pathogenic ★★★ same condition
ANO5 p.Arg50Ter Pathogenic ★★★ same condition
ANO5 p.Arg58Trp 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/ano5-p-ala644ser (accessed [today's date]).

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