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Living with Alzheimer disease without neurofibrillary tangles

A slowly worsening form of dementia linked to chromosome 3, with memory and thinking problems.

Understanding Alzheimer disease without neurofibrillary tangles

Alzheimer disease without neurofibrillary tangles, also called Alzheimer disease 15, is a progressive form of dementia linked to chromosome 3.

It causes memory problems and trouble with thinking. Some people also have features of frontotemporal dementia, which varies from person to person.

Signs & symptoms

Symptoms vary. GARD's summary says they may include:

  • Memory problems
  • Trouble with thinking (cognitive problems)
  • Features of frontotemporal dementia, which vary

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.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
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 BrightFocus Foundation
  • 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
Is genetic testing available for our family?
How will my thinking and memory be tracked over time?
Which specialists should be on my care team?

Quick facts

InheritanceAutosomal Dominant

GARD says it has been linked to chromosome 3 and lists autosomal dominant inheritance, so a changed copy of a gene from one parent can be enough.

Also known as: ad15; alzheimer disease 15; alzheimer disease-15; alzheimer disease, type 15; alzheimer's disease 15; alzheimer's disease type 15

Patient organizations

Source: NIH GARD · Alzheimer disease without neurofibrillary tanglesGARD ID 7190 · 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 Alzheimer disease without neurofibrillary tangles.

Explore the Alzheimer disease without neurofibrillary tangles blog

Explore research for Alzheimer disease without neurofibrillary tangles

Explore actively recruiting Alzheimer disease without neurofibrillary tangles studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Alzheimer disease without neurofibrillary tangles with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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