Is CCDC39 p.Glu8= (c.24G>A) pathogenic?

CCDC39 p.Glu8= (c.24G>A) is classified Likely benign in CCDC39 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-01-25). Very rare (popmax 0.00167%, amr); Associated with primary ciliary dyskinesia.

What condition is associated with CCDC39 p.Glu8= (c.24G>A)?

CCDC39 p.Glu8= (c.24G>A) is associated with primary ciliary dyskinesia (ClinVar).

How common is CCDC39 p.Glu8= (c.24G>A) in the general population?

CCDC39 p.Glu8= (c.24G>A) is very rare (popmax 0.00167%, amr) (gnomAD).

How is Primary ciliary dyskinesia inherited?

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

CCDC39 p.Glu8=

c.24G>A · rs756708494 · VCV2920495

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

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 1.7	GERP 1.5, phastCons 1
Overall
CADD	11.77	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

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

Overall 0.000248% 4/1,613,832 alleles · very rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00167%	60,004
Remaining individualsnot grpmax-eligible	0.0016%	62,468
South Asian	0.0011%	91,086
European (non-Finnish)	8.48e-05%	1,179,864

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: CCDC39
Protein: p.Glu8=
Coding: c.24G>A
MANE Select: NM_181426
dbSNP: rs756708494
Type: single nucleotide variant
Location: chr3:180679357 (GRCh38)
Gene constraint: LOEUF 1.226 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 79.23 · 1 PDB

Full CCDC39 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

CCDC39 p.Glu8Gln Uncertain significance ★ ⚠ same residue
CCDC39 c.1034+2T>A Pathogenic/Likely pathogenic ★★ same condition
CCDC39 c.1167+1261A>G Pathogenic/Likely pathogenic ★★ same condition
CCDC39 c.1362+1G>A Likely pathogenic ★★ same condition
CCDC39 c.1999-2A>T Pathogenic/Likely pathogenic ★★ same condition
CCDC39 c.210+2T>C Pathogenic ★★ same condition
CCDC39 c.357+1G>C Pathogenic ★★ same condition
CCDC39 c.516+1G>A 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/ccdc39-p-glu8 (accessed [today's date]).

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