Is DNAI2 p.Asp452= (c.1356C>T) pathogenic?

DNAI2 p.Asp452= (c.1356C>T) is classified Likely benign in DNAI2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-02-01). Ultra-rare (popmax 0.0521%, afr); Associated with primary ciliary dyskinesia.

What condition is associated with DNAI2 p.Asp452= (c.1356C>T)?

DNAI2 p.Asp452= (c.1356C>T) is associated with primary ciliary dyskinesia (ClinVar).

How common is DNAI2 p.Asp452= (c.1356C>T) in the general population?

DNAI2 p.Asp452= (c.1356C>T) is ultra-rare (popmax 0.0521%, afr) (gnomAD).

How is Primary ciliary dyskinesia inherited?

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

DNAI2 p.Asp452=

c.1356C>T · rs748264709 · VCV1085714

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0521%, afr)

Conditions

primary ciliary dyskinesia

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>G here scores Δ0.35 · evaluated, not missing
Constraint at this position
Conservation	phyloP -5.4	GERP -0.88
Overall
CADD	2.704	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0521% African / African-American · 39/74,920 alleles

Filtering AF 0.039% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0346%

Overall 0.00508% 82/1,613,720 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0521%	1,921
East Asian	0.00668%	14,964
Remaining individualsnot grpmax-eligible	0.0048%	20,829
South Asian	0.00439%	22,773
Ashkenazi Jewishnot grpmax-eligible	0.00338%	29,608
Admixed American	0.00333%	30,000
European (non-Finnish)	0.00246%	40,691
Finnishnot grpmax-eligible	0.00157%	63,688

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: DNAI2
Protein: p.Asp452=
Coding: c.1356C>T
MANE Select: NM_023036
dbSNP: rs748264709
Type: single nucleotide variant
Location: chr17:74310025 (GRCh38)
Gene constraint: LOEUF 0.966 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 84.27 · 1 PDB

Full DNAI2 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

DNAI2 c.1348-1G>A Likely pathogenic ★★ same condition
DNAI2 c.1494+1G>A Pathogenic/Likely pathogenic ★★ same condition
DNAI2 c.1494+1G>T Pathogenic/Likely pathogenic ★★ same condition
DNAI2 c.1495-2A>T Likely pathogenic ★★ same condition
DNAI2 c.346-3T>G Pathogenic/Likely pathogenic ★★ same condition
DNAI2 c.610+1G>A Pathogenic/Likely pathogenic ★★ same condition
DNAI2 c.610+1G>T Likely pathogenic ★★ same condition
DNAI2 c.725-2A>C 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/dnai2-p-asp452 (accessed [today's date]).

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