Is DYNC1H1 p.Pro4235= (c.12705G>A) pathogenic?

DYNC1H1 p.Pro4235= (c.12705G>A) is classified Conflicting classifications of pathogenicity in DYNC1H1 (ClinVar, Conflicting submitters, 6 submitters; last evaluated 2025-07-16). Ultra-rare (popmax 0.0165%, mid); Associated with Charcot-Marie-Tooth disease axonal type 2O.

What condition is associated with DYNC1H1 p.Pro4235= (c.12705G>A)?

DYNC1H1 p.Pro4235= (c.12705G>A) is associated with Charcot-Marie-Tooth disease axonal type 2O, autosomal dominant cerebellar ataxia (ClinVar).

How common is DYNC1H1 p.Pro4235= (c.12705G>A) in the general population?

DYNC1H1 p.Pro4235= (c.12705G>A) is ultra-rare (popmax 0.0165%, mid) (gnomAD).

DYNC1H1 p.Pro4235=

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.12705G>A · rs199792795 · VCV312657

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 6 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0165%, mid)

Conditions

Charcot-Marie-Tooth disease axonal type 2O

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 -14	GERP -4
Overall
CADD	0.245	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0165% Middle Eastern · 1/6,062 alleles

Filtering AF 0.00255% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00161%

Overall 0.00211% 34/1,614,100 alleles · ultra-rare exomes 32/1,461,798 · genomes 2/152,302 · joint denominator

Ancestry group	Frequency	1 in
Middle Easterngrpmax	0.0165%	6,062
African / African-American	0.00666%	15,010
Admixed American	0.005%	20,008
East Asian	0.00446%	22,442
Remaining individualsnot grpmax-eligible	0.0032%	31,256
European (non-Finnish)	0.00178%	56,191

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.Pro4235=
Coding: c.12705G>A
MANE Select: NM_001376
dbSNP: rs199792795
Type: single nucleotide variant
Location: chr14:102044294 (GRCh38)
Gene constraint: LOEUF 0.117 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Residue 4235: 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

Also linked: autosomal dominant cerebellar ataxia

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.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
DYNC1H1 p.Arg264Leu Pathogenic ★★ same condition
DYNC1H1 p.Arg292Trp 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-pro4235 (accessed [today's date]).

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