Is DNAAF2 p.Pro276Ala (c.826C>G) pathogenic?

DNAAF2 p.Pro276Ala (c.826C>G) is classified Uncertain significance in DNAAF2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-05-10). AlphaMissense: likely benign (0.159); Very rare (popmax 0.0011%, sas); Associated with primary ciliary dyskinesia.

What condition is associated with DNAAF2 p.Pro276Ala (c.826C>G)?

DNAAF2 p.Pro276Ala (c.826C>G) is associated with primary ciliary dyskinesia (ClinVar).

How common is DNAAF2 p.Pro276Ala (c.826C>G) in the general population?

DNAAF2 p.Pro276Ala (c.826C>G) is very rare (popmax 0.0011%, sas) (gnomAD).

How is Primary ciliary dyskinesia inherited?

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

What do computational predictors say about DNAAF2 p.Pro276Ala (c.826C>G)?

AlphaMissense predicts likely benign (score 0.159) — an in-silico prediction, not a clinical call.

DNAAF2 p.Pro276Ala

c.826C>G · VCV4012480

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.159 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0011%, sas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

primary ciliary dyskinesia

Computational evidence

Protein change
AlphaMissense	0.159	likely benign
REVEL	0.18	moderately benign-leaning
SaProt	LLR -6.29	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 12	GERP 1.6, phastCons 1
Regional constraint	o/e 1.11	unconstrained · MANE · 9,604 bp · p 0.00019 · regional, not allelic
Overall
CADD	22.8	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 0.0011% South Asian · 1/91,070 alleles

Filtering AF 0.000124% ClinGen BA1/BS1 input FAF95, joint · FAF99 9e-05%

Overall 0.000372% 6/1,611,660 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0011%	91,070
European (non-Finnish)	0.000424%	235,934

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: DNAAF2
Protein: p.Pro276Ala
Coding: c.826C>G
MANE Select: NM_018139
Type: single nucleotide variant
Location: chr14:49634324 (GRCh38)
Gene constraint: LOEUF 1.811 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 65.57

Full DNAAF2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

primary ciliary dyskinesia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Primary ciliary dyskinesia (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, X-linked recessive
Onset: Neonatal
Prevalence: 1-5 / 10 000 (Pakistan)

Similar variants

DNAAF2 p.Pro276Arg Uncertain significance ★ ⚠ same residue
DNAAF2 p.Pro276= Likely benign ★ same residue
DNAAF2 p.Gln504Ter Pathogenic/Likely pathogenic ★★ same condition
DNAAF2 p.Gln529Ter Pathogenic/Likely pathogenic ★★ same condition
DNAAF2 p.Glu130Ter Pathogenic/Likely pathogenic ★★ same condition
DNAAF2 p.Glu243Ter Likely pathogenic ★★ same condition
DNAAF2 p.Ala100Gly Uncertain significance ★★ ⚠ same condition
DNAAF2 p.Ala126Val 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/dnaaf2-p-pro276ala (accessed [today's date]).

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