Is DCTN1 p.Gln413Arg (c.1238A>G) pathogenic?

DCTN1 p.Gln413Arg (c.1238A>G) is classified Uncertain significance in DCTN1 (ClinVar, Multiple submitters, 3 submitters; last evaluated 2022-08-23). AlphaMissense: likely benign (0.0914); Ultra-rare (popmax 0.0133%, amr); Associated with neuronopathy, distal hereditary motor, type 7B.

What condition is associated with DCTN1 p.Gln413Arg (c.1238A>G)?

DCTN1 p.Gln413Arg (c.1238A>G) is associated with neuronopathy, distal hereditary motor, type 7B, amyotrophic lateral sclerosis type 1, Perry syndrome (ClinVar).

How common is DCTN1 p.Gln413Arg (c.1238A>G) in the general population?

DCTN1 p.Gln413Arg (c.1238A>G) is ultra-rare (popmax 0.0133%, amr) (gnomAD).

How is Distal hereditary motor neuropathy type 7 inherited?

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

What do computational predictors say about DCTN1 p.Gln413Arg (c.1238A>G)?

AlphaMissense predicts likely benign (score 0.0914) — an in-silico prediction, not a clinical call.

DCTN1 p.Gln413Arg

c.1238A>G · rs745458066 · VCV1439159

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.0914 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0133%, amr)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

neuronopathy, distal hereditary motor, type 7B

Computational evidence

Protein change
AlphaMissense	0.0914	likely benign
REVEL	0.356	indeterminate
SaProt	LLR -6.66	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.9	GERP 2.1, phastCons 1
Regional constraint	o/e 0.76	unconstrained · MANE · 1,940 bp · p 6.9e-06 · regional, not allelic
Overall
CADD	24.6	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 0.0133% Admixed American · 8/60,000 alleles

Filtering AF 0.00661% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00482%

Overall 0.00062% 10/1,613,918 alleles · ultra-rare

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.0133%	7,500
Remaining individualsnot grpmax-eligible	0.0016%	62,482
European (non-Finnish)	8.47e-05%	1,180,054

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: DCTN1
Protein: p.Gln413Arg
Coding: c.1238A>G
MANE Select: NM_004082
dbSNP: rs745458066
Type: single nucleotide variant
Location: chr2:74370235 (GRCh38)
Gene constraint: LOEUF 0.448 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 77.43 · 13 PDB

Full DCTN1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

neuronopathy, distal hereditary motor, type 7B — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: amyotrophic lateral sclerosis type 1 Perry syndrome

For Distal hereditary motor neuropathy type 7 (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Adult, Childhood

Similar variants

DCTN1 c.279+1G>T Pathogenic/Likely pathogenic ★★ same condition
DCTN1 p.Gln93His Pathogenic/Likely pathogenic ★★ same condition
DCTN1 p.Gly71Glu Pathogenic ★★ same condition
DCTN1 p.Tyr78His Likely pathogenic ★★ same condition
DCTN1 c.1128-3C>G Uncertain significance ★★ same condition
DCTN1 c.1288-10C>G Uncertain significance ★★ same condition
DCTN1 c.2185-3C>T Uncertain significance ★★ same condition
DCTN1 c.33+3A>G 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/dctn1-p-gln413arg (accessed [today's date]).

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