Is DNAH2 p.Ser735Arg (c.2205C>A) pathogenic?

DNAH2 p.Ser735Arg (c.2205C>A) is classified Uncertain significance in DNAH2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-04-13). AlphaMissense: likely pathogenic (0.6197); Ultra-rare (popmax 0.02%, afr); Associated with Inborn genetic diseases.

What condition is associated with DNAH2 p.Ser735Arg (c.2205C>A)?

DNAH2 p.Ser735Arg (c.2205C>A) is associated with Inborn genetic diseases (ClinVar).

How common is DNAH2 p.Ser735Arg (c.2205C>A) in the general population?

DNAH2 p.Ser735Arg (c.2205C>A) is ultra-rare (popmax 0.02%, afr) (gnomAD).

What do computational predictors say about DNAH2 p.Ser735Arg (c.2205C>A)?

AlphaMissense predicts likely pathogenic (score 0.6197) — an in-silico prediction, not a clinical call.

DNAH2 p.Ser735Arg

c.2205C>A · VCV4012955

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.6197 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.02%, afr)

Missense predictors

1/2 damaging

AlphaMissense, REVEL

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.6197	likely pathogenic
REVEL	0.088	moderately benign-leaning
⇒ AlphaMissense calls this damaging; REVEL does not.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>T here scores Δ0.76 · evaluated, not missing
Constraint at this position
Conservation	phyloP 4.9	GERP 0.85, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 73 kb · p 9.6e-12 · regional, not allelic
Overall
CADD	21.5	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.02% African / African-American · 15/74,890 alleles

Filtering AF 0.0123% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00989%

Overall 0.000993% 16/1,611,834 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.02%	4,993
Remaining individualsnot grpmax-eligible	0.0016%	62,378

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: DNAH2
Protein: p.Ser735Arg
Coding: c.2205C>A
MANE Select: NM_020877
Type: single nucleotide variant
Location: chr17:7758648 (GRCh38)
Gene constraint: LOEUF 0.655 · pLI <0.01 (gnomAD)
Residue 735: the 'stem' region

Full DNAH2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

DNAH2 p.Ala1036Val Uncertain significance ★★ ⚠ same condition
DNAH2 p.Arg1533Cys Uncertain significance ★★ ⚠ same condition
DNAH2 p.Arg2538Gln Uncertain significance ★★ same condition
DNAH2 p.Arg3759His Uncertain significance ★★ ⚠ same condition
DNAH2 p.Gln2069Glu Uncertain significance ★★ same condition
DNAH2 p.Ile4043Ser Uncertain significance ★★ ⚠ same condition
DNAH2 p.Pro3819Leu Uncertain significance ★★ ⚠ same condition
DNAH2 p.Ala1058Thr Benign/Likely benign ★★ 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/dnah2-p-ser735arg (accessed [today's date]).

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