C9orf72

Universal Cellular Machinery · Protein Scaffolding & Structural Architecture

Can an ordinary SNP result rule out a C9orf72 repeat expansion?

C9orf72 encodes a protein expressed prominently in neurons, including cells involved in movement. Disease-associated repeat expansions are a distinct kind of genetic change and may require testing designed to detect them.

Common Gene Name
C9orf72-SMCR8 complex subunit
NCBI Gene ID
203228
Chromosome
9

Clinical Evidence Status

Established disease relationship

These labels describe available evidence about a gene. They do not classify your variant or recommend a treatment.

Answer Sources

Explore supporting evidence (2 records)
Condition or drugEvidenceGrade / statusContextSource
frontotemporal dementia and/or amyotrophic lateral sclerosis 1ClinGen gene-disease validityDefinitiveAutosomal dominantView source
2021-09-21
Amyotrophic lateral sclerosisMedlinePlus related conditionAssociation type varies; no grade assigned hereView source
2016-02

Source snapshot: 2026-09-09. Consumer text updated: 2026-09-10. Source dates describe the cited records, not a new clinical review.

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