Is DYNC1H1 p.Gly8Ser (c.22G>A) pathogenic?

DYNC1H1 p.Gly8Ser (c.22G>A) is classified Likely benign in DYNC1H1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-12-05). AlphaMissense: likely benign (0.0981); Ultra-rare (popmax 0.0185%, amr); Associated with Charcot-Marie-Tooth disease axonal type 2O.

What condition is associated with DYNC1H1 p.Gly8Ser (c.22G>A)?

DYNC1H1 p.Gly8Ser (c.22G>A) is associated with Charcot-Marie-Tooth disease axonal type 2O (ClinVar).

How common is DYNC1H1 p.Gly8Ser (c.22G>A) in the general population?

DYNC1H1 p.Gly8Ser (c.22G>A) is ultra-rare (popmax 0.0185%, amr) (gnomAD).

What do computational predictors say about DYNC1H1 p.Gly8Ser (c.22G>A)?

AlphaMissense predicts likely benign (score 0.0981) — an in-silico prediction, not a clinical call.

DYNC1H1 p.Gly8Ser

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.22G>A · rs774412818 · VCV839933

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0981 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0185%, amr)

Missense predictors

0/2 damaging

AlphaMissense, REVEL

Conditions

Charcot-Marie-Tooth disease axonal type 2O

Computational evidence

Protein change
AlphaMissense	0.0981	likely benign
REVEL	0.187	benign-leaning
⇒ AlphaMissense and REVEL both call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 9	GERP 1.5, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 225 bp · p 0.67 · regional, not allelic
Overall
CADD	26.3	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 0.0185% Admixed American · 11/59,498 alleles

Filtering AF 0.0103% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00801%

Overall 0.001% 16/1,597,020 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0185%	5,409
European (non-Finnish)	0.000425%	235,276

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.Gly8Ser
Coding: c.22G>A
MANE Select: NM_001376
dbSNP: rs774412818
Type: single nucleotide variant
Location: chr14:101964713 (GRCh38)
Gene constraint: LOEUF 0.117 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)

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.Gly8= 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
DYNC1H1 p.Arg264Leu 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-gly8ser (accessed [today's date]).

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