Is VCP p.Ile100= (c.300C>T) pathogenic?

VCP p.Ile100= (c.300C>T) is classified Likely benign in VCP (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-27). Absent from gnomAD v4.1; Associated with inclusion body myopathy with Paget disease of bone and frontotemporal dementia.

What condition is associated with VCP p.Ile100= (c.300C>T)?

VCP p.Ile100= (c.300C>T) is associated with inclusion body myopathy with Paget disease of bone and frontotemporal dementia, frontotemporal dementia and/or amyotrophic lateral sclerosis 6 (ClinVar).

How common is VCP p.Ile100= (c.300C>T) in the general population?

VCP p.Ile100= (c.300C>T) is absent from gnomAD v4.1 (gnomAD).

VCP p.Ile100=

Q: How is Inclusion body myopathy with Paget disease of bone and frontotemporal dementia inherited?

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

c.300C>T · VCV3752013

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

inclusion body myopathy with Paget disease of bone and frontotemporal dementia

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal.
Splicing
SpliceAI	Δ0.64	donor gain · deltas
Constraint at this position
Conservation	phyloP 7.6	GERP 1.7, phastCons 1
Overall
CADD	25.2	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: VCP
Protein: p.Ile100=
Coding: c.300C>T
MANE Select: NM_007126
Type: single nucleotide variant
Location: chr9:35067893 (GRCh38)
Gene constraint: LOEUF 0.134 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 83.11 · 144 PDB
Residue 100: a β-strand

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

Disease context

inclusion body myopathy with Paget disease of bone and frontotemporal dementia — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: frontotemporal dementia and/or amyotrophic lateral sclerosis 6

For Inclusion body myopathy with Paget disease of bone and frontotemporal dementia (Orphanet):

Inheritance: Autosomal dominant
Onset: Adult

Similar variants

VCP p.Ile100Val Uncertain significance ★ ⚠ same residue
VCP p.Arg155Cys Pathogenic/Likely pathogenic ★★ same condition
VCP p.Arg155Gly Pathogenic/Likely pathogenic ★★ same condition
VCP p.Arg155His Pathogenic ★★ ⚠ same condition
VCP p.Arg159Cys Pathogenic/Likely pathogenic ★★ same condition
VCP p.Arg159His Pathogenic ★★ same condition
VCP p.Arg191Gln Pathogenic/Likely pathogenic ★★ same condition
VCP p.Arg191Pro 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/vcp-p-ile100 (accessed [today's date]).

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