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Living with Frontotemporal dementia and/or amyotrophic lateral sclerosis 7

A rare inherited brain condition in adults, caused by changes in the CHMP2B gene, which can cause dementia, ALS, or both.

Understanding Frontotemporal dementia and/or amyotrophic lateral sclerosis 7

Frontotemporal dementia and/or amyotrophic lateral sclerosis 7 (FTDALS7) is a rare inherited brain disorder that typically affects adults.

People may have symptoms of amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), or both. ALS symptoms include muscle loss and weakness in the arms and legs, trouble swallowing, and breathing problems. FTD symptoms include changes in behavior and personality, memory loss, and trouble controlling emotions or actions.

Signs & symptoms

GARD doesn't list a separate symptom list. Its summary describes:

  • Muscle loss and weakness in the arms and legs
  • Trouble swallowing
  • Breathing problems
  • Changes in behavior and personality
  • Memory loss
  • Trouble controlling emotions or actions

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    The Association for Frontotemporal Degeneration may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: The Association for Frontotemporal Degeneration
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with The Association for Frontotemporal Degeneration
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Should I have genetic testing for the CHMP2B gene?
Which specialists can help with both thinking and movement symptoms?
What does this mean for my relatives?

Quick facts

InheritanceAutosomal Dominant

Changes in the CHMP2B gene cause it. It is autosomal dominant, which means a single changed copy of the gene is enough.

Also known as: amyotrophic lateral sclerosis 17; amyotrophic lateral sclerosis caused by mutation in chmp2b; amyotrophic lateral sclerosis, chmp2b-related; chmp2b amyotrophic lateral sclerosis; chmp2b-related amyotrophic lateral sclerosis; chmp2b-related frontotemporal dementia

Patient organizations

Source: NIH GARD · Frontotemporal dementia and/or amyotrophic lateral sclerosis 7GARD ID 15322 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Frontotemporal dementia and/or amyotrophic lateral sclerosis 7.

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  • Recruiting studies from ClinicalTrials.gov
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