Is DNM2 p.Pro778= (c.2334T>C) pathogenic?

DNM2 p.Pro778= (c.2334T>C) is classified Likely benign in DNM2 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-05-06). Very rare (popmax 8.48e-05%, nfe); Associated with Charcot-Marie-Tooth disease dominant intermediate B.

What condition is associated with DNM2 p.Pro778= (c.2334T>C)?

DNM2 p.Pro778= (c.2334T>C) is associated with Charcot-Marie-Tooth disease dominant intermediate B (ClinVar).

How common is DNM2 p.Pro778= (c.2334T>C) in the general population?

DNM2 p.Pro778= (c.2334T>C) is very rare (popmax 8.48e-05%, nfe) (gnomAD).

DNM2 p.Pro778=

Q: How is Autosomal dominant intermediate Charcot-Marie-Tooth disease type B inherited?

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

c.2334T>C · rs2146209802 · VCV1107095

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 8.48e-05%, nfe)

Conditions

Charcot-Marie-Tooth disease dominant intermediate B

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 -4.5	GERP -3.1
Overall
CADD	0.086	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.48e-05% European (non-Finnish) · 1/1,179,708 alleles

Overall 6.2e-05% 1/1,613,642 alleles · very rare exomes 1/1,461,548 · genomes 0/152,094 · joint denominator

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: DNM2
Protein: p.Pro778=
Coding: c.2334T>C
MANE Select: NM_001005361
dbSNP: rs2146209802
Type: single nucleotide variant
Location: chr19:10830169 (GRCh38)
Gene constraint: LOEUF 0.239 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 78.38 · 1 PDB
Residue 778: the 'disordered' region

Full DNM2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Charcot-Marie-Tooth disease dominant intermediate B — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Autosomal dominant intermediate Charcot-Marie-Tooth disease type B (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Adult, Childhood

Similar variants

DNM2 p.Pro778Thr Uncertain significance ★ ⚠ same residue
DNM2 p.Pro778Ser Uncertain significance ★ ⚠ same residue
DNM2 p.Ala618Thr Pathogenic ★★★ same condition
DNM2 p.Arg369Gln Pathogenic ★★★ ⚠ same condition
DNM2 p.Arg369Trp Pathogenic ★★★ same condition
DNM2 p.Arg465Trp Pathogenic ★★★ same condition
DNM2 p.Arg522Cys Likely pathogenic ★★★ same condition
DNM2 p.Arg522His 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/dnm2-p-pro778 (accessed [today's date]).

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