Is DNAH8 p.Ala263= (c.789G>A) pathogenic?

DNAH8 p.Ala263= (c.789G>A) is classified Likely benign in DNAH8 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-01-16). Rare (popmax 0.118%, afr); Associated with primary ciliary dyskinesia.

What condition is associated with DNAH8 p.Ala263= (c.789G>A)?

DNAH8 p.Ala263= (c.789G>A) is associated with primary ciliary dyskinesia (ClinVar).

How common is DNAH8 p.Ala263= (c.789G>A) in the general population?

DNAH8 p.Ala263= (c.789G>A) is rare (popmax 0.118%, afr) (gnomAD).

How is Primary ciliary dyskinesia inherited?

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

DNAH8 p.Ala263=

c.789G>A · rs61757620 · VCV696351

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

rare (popmax 0.118%, afr)

Conditions

primary ciliary dyskinesia

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
Conservation	phyloP -1.6	GERP -5.3
Overall
CADD	5.408	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.118% African / African-American · 85/72,256 alleles

Filtering AF 0.0974% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0899%

Overall 0.0391% 612/1,565,900 alleles · rare exomes 528/1,413,670 · genomes 84/152,230 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.118%	850
European (non-Finnish)	0.0424%	2,358
Remaining individualsnot grpmax-eligible	0.0231%	4,328
Admixed American	0.0124%	8,096
East Asian	0.0118%	8,464
South Asian	0.00985%	10,151
Finnishnot grpmax-eligible	0.00158%	63,390

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: DNAH8
Protein: p.Ala263=
Coding: c.789G>A
MANE Select: NM_001206927
dbSNP: rs61757620
Type: single nucleotide variant
Location: chr6:38737093 (GRCh38)
Gene constraint: LOEUF 0.692 · pLI <0.01 (gnomAD)

Full DNAH8 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

DNAH8 p.Ala263Thr Uncertain significance ★★ ⚠ same residue
DNAH8 p.Ala263Val Uncertain significance ★ ⚠ same residue
DNAH8 p.Ala263Glu Likely benign ★ ⚠ same residue
DNAH8 c.10963-1G>A Likely pathogenic ★★ same condition
DNAH8 c.11563+1G>T Likely pathogenic ★★ same condition
DNAH8 c.2664+2T>C Likely pathogenic ★★ same condition
DNAH8 c.5734-1G>T Likely pathogenic ★★ same condition
DNAH8 p.Arg1090Ter Pathogenic/Likely 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/dnah8-p-ala263 (accessed [today's date]).

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