Is DYNC1H1 p.Arg4428Cys (c.13282C>T) pathogenic?

DYNC1H1 p.Arg4428Cys (c.13282C>T) is classified Conflicting classifications of pathogenicity in DYNC1H1 (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2025-10-10). AlphaMissense: likely benign (0.1737); Very rare (popmax 0.0028%, nfe); Associated with Charcot-Marie-Tooth disease axonal type 2O.

What condition is associated with DYNC1H1 p.Arg4428Cys (c.13282C>T)?

DYNC1H1 p.Arg4428Cys (c.13282C>T) is associated with Charcot-Marie-Tooth disease axonal type 2O (ClinVar).

How common is DYNC1H1 p.Arg4428Cys (c.13282C>T) in the general population?

DYNC1H1 p.Arg4428Cys (c.13282C>T) is very rare (popmax 0.0028%, nfe) (gnomAD).

What do computational predictors say about DYNC1H1 p.Arg4428Cys (c.13282C>T)?

AlphaMissense predicts likely benign (score 0.1737) — an in-silico prediction, not a clinical call.

DYNC1H1 p.Arg4428Cys

Q: How is Autosomal dominant Charcot-Marie-Tooth disease type 2O inherited?

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

c.13282C>T · rs770395590 · VCV642663

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1737 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.0028%, nfe)

Conditions

Charcot-Marie-Tooth disease axonal type 2O

Computational evidence

Protein change
AlphaMissense	0.1737	likely benign
REVEL	0.431	indeterminate
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.6	GERP 2.2, phastCons 1
Regional constraint	o/e 0.68	unconstrained · MANE · 5,057 bp · p 4.4e-07 · regional, not allelic
Overall
CADD	26.6	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 0.0028% European (non-Finnish) · 33/1,180,050 alleles

Filtering AF 0.00199% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00175%

Overall 0.00223% 36/1,614,066 alleles · very rare

Ancestry group	Frequency	1 in
European (non-Finnish)grpmax	0.0028%	35,759
East Asian	0.00223%	44,896
Admixed American	0.00167%	59,996
South Asian	0.0011%	91,092

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: DYNC1H1
Protein: p.Arg4428Cys
Coding: c.13282C>T
MANE Select: NM_001376
dbSNP: rs770395590
Type: single nucleotide variant
Location: chr14:102048579 (GRCh38)
Gene constraint: LOEUF 0.117 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Residue 4428: an α-helix

Full DYNC1H1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Charcot-Marie-Tooth disease axonal type 2O — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Autosomal dominant Charcot-Marie-Tooth disease type 2O (Orphanet):

Inheritance: Autosomal dominant
Onset: Childhood
Prevalence: <1 / 1 000 000 (Europe)

Similar variants

DYNC1H1 p.Arg4428His Conflicting classifications of pathogenicity ★ same residue
DYNC1H1 p.Arg4428Gly Likely benign ★ same residue
DYNC1H1 p.Arg1567Gln Pathogenic/Likely pathogenic ★★ same condition
DYNC1H1 p.Arg1623Gln Pathogenic/Likely pathogenic ★★ same condition
DYNC1H1 p.Arg1962Cys Pathogenic ★★ same condition
DYNC1H1 p.Arg1962His Likely pathogenic ★★ same condition
DYNC1H1 p.Arg2332Cys Pathogenic/Likely pathogenic ★★ same condition
DYNC1H1 p.Arg251Ser 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/dync1h1-p-arg4428cys (accessed [today's date]).

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