Is DNAH2 p.Ala687Asp (c.2060C>A) pathogenic?

DNAH2 p.Ala687Asp (c.2060C>A) is classified Uncertain significance in DNAH2 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-06-07). AlphaMissense: likely benign (0.325); Ultra-rare (popmax 0.0156%, eas); Associated with Inborn genetic diseases.

What condition is associated with DNAH2 p.Ala687Asp (c.2060C>A)?

DNAH2 p.Ala687Asp (c.2060C>A) is associated with Inborn genetic diseases (ClinVar).

How common is DNAH2 p.Ala687Asp (c.2060C>A) in the general population?

DNAH2 p.Ala687Asp (c.2060C>A) is ultra-rare (popmax 0.0156%, eas) (gnomAD).

What do computational predictors say about DNAH2 p.Ala687Asp (c.2060C>A)?

AlphaMissense predicts likely benign (score 0.325) — an in-silico prediction, not a clinical call.

DNAH2 p.Ala687Asp

c.2060C>A · rs772334731 · VCV2558664

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.325 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0156%, eas)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.325	likely benign
REVEL	0.174	moderately benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>G here scores Δ0.23 · evaluated, not missing
Constraint at this position
Conservation	phyloP 2.2	GERP 0.85, phastCons 1
Regional constraint	o/e 0.88	unconstrained · MANE · 73 kb · p 9.6e-12 · regional, not allelic
Overall
CADD	16.13	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 0.0156% East Asian · 7/44,866 alleles

Filtering AF 0.00726% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00515%

Overall 0.000479% 7/1,461,532 alleles · ultra-rare

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.Ala687Asp
Coding: c.2060C>A
MANE Select: NM_020877
dbSNP: rs772334731
Type: single nucleotide variant
Location: chr17:7758503 (GRCh38)
Gene constraint: LOEUF 0.655 · pLI <0.01 (gnomAD)
Residue 687: 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.Ala687Gly Uncertain significance ★ ⚠ same residue
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

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-ala687asp (accessed [today's date]).

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