Primary progressive aphasia
MONDO:0019806Primary progressive aphasia (PPA) is a neurodegenerative disorder, characterized by a primary dissolution of language, with relative sparing of other mental faculties for at least the first 2 years of illness. PPA is recognized as the language variant in the frontotemporal dementia (FTD) spectrum of disorders. PPA can be classified into 3 subtypes based on specific speech and language features: semantic dementia (SD), progressive non-fluent aphasia (PNFA) and logopenic progressive aphasia (lv-PPA).
Also known as: Mesulam syndrome, PPA, primary progressive aphasia syndrome
70 clinical trials for this condition and its sub-types.
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Broader categories
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Gene therapy trial targets inherited dementia
Disease control OngoingThis study tests a single-dose gene therapy called LY3884963 in 35 people with frontotemporal dementia caused by GRN gene mutations. The therapy aims to raise levels of a missing protein (progranulin) in the brain. Participants receive the treatment via injection into the fluid a…
Phase: PHASE1, PHASE2 • Sponsor: Prevail Therapeutics • Aim: Disease control
Last updated Jul 18, 2026 00:00 UTC
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Could a pill slow a rare dementia? early trial begins
Disease control OngoingThis early-stage trial tests an oral drug called verdiperstat in 64 people with semantic variant primary progressive aphasia (svPPA), a rare dementia that affects language. The study is double-blind and placebo-controlled, meaning some participants get the drug and some get a pla…
Phase: PHASE1 • Sponsor: Peter Ljubenkov, MD • Aim: Disease control
Last updated Jul 08, 2026 00:00 UTC
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Could a single gene injection slow frontotemporal dementia?
Disease control OngoingThis early-stage trial tests a gene therapy called PBFT02 for frontotemporal dementia (FTD) in people with specific genetic mutations. The therapy delivers a working copy of the GRN gene directly into the brain. The study involves 30 adults and primarily checks for safety and sid…
Phase: PHASE1, PHASE2 • Sponsor: Passage Bio, Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:33 UTC
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Could a zapping cap help Alzheimer's patients remember?
Symptom relief OngoingThis study tests whether a safe, painless brain stimulation technique called tDCS can improve verbal learning in people with Alzheimer's disease. Researchers will compare active stimulation to a sham (fake) version in 90 participants with typical or language-based Alzheimer's. Th…
Phase: NA • Sponsor: Johns Hopkins University • Aim: Symptom relief
Last updated Jul 17, 2026 00:00 UTC
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Could a pill help restore speech in progressive aphasia?
Symptom relief OngoingThis study tests a drug called neflamapimod in 20 people with a language disorder called nonfluent variant primary progressive aphasia (nfvPPA). The goal is to see if the drug is safe and if it can improve language symptoms. Participants will receive either the drug or a placebo …
Phase: PHASE2 • Sponsor: EIP Pharma Inc • Aim: Symptom relief
Last updated Jul 08, 2026 00:00 UTC
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Can zapping the brain boost speech therapy for aphasia patients?
Symptom relief ENROLLING_BY_INVITATIONThis study tests whether adding a non-invasive brain stimulation technique called transcranial magnetic stimulation (TMS) to speech therapy can improve language skills in people with primary progressive aphasia (PPA), a condition that slowly damages language areas of the brain. A…
Phase: NA • Sponsor: IRCCS San Raffaele • Aim: Symptom relief
Last updated Jun 27, 2026 12:36 UTC
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Could a gentle brain zap improve speech in progressive language disorders?
Symptom relief OngoingThis study tests whether a gentle, low-level electric current applied to specific brain areas can improve speech and language difficulties in people with primary progressive aphasia (PPA) and progressive apraxia of speech (PAOS). The treatment is called high-definition transcrani…
Phase: NA • Sponsor: The University of Texas at Dallas • Aim: Symptom relief
Last updated Jun 27, 2026 12:30 UTC
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Can speech therapy slow language loss in progressive aphasia?
Symptom relief OngoingThis study tests two types of speech therapy for people with primary progressive aphasia, a brain disorder that slowly destroys language skills. Sixty participants will work on word retrieval or script practice with a clinician and at home. Researchers will measure changes in com…
Phase: NA • Sponsor: University of Texas at Austin • Aim: Symptom relief
Last updated Jun 27, 2026 07:57 UTC
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Could a Head-Zap and online therapy slow speech loss?
Symptom relief ENROLLING_BY_INVITATIONThis study tests whether combining speech therapy with a gentle brain stimulation technique (tDCS) can help people with primary progressive aphasia (PPA) communicate better. Ten participants will receive treatment at home via video calls. The goal is to see if this approach is fe…
Phase: NA • Sponsor: University of Texas at Austin • Aim: Symptom relief
Last updated Jun 27, 2026 07:54 UTC
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Can online speech therapy help those with Dementia-Related language loss?
Symptom relief ENROLLING_BY_INVITATIONThis study tests a speech-language telerehabilitation program for people with primary progressive aphasia (PPA), a dementia that slowly destroys language abilities. The program includes online therapy sessions and care partner training. Researchers will enroll 21 participants to …
Phase: NA • Sponsor: University of Texas at Austin • Aim: Symptom relief
Last updated Jun 27, 2026 07:53 UTC
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Simple blood draws could spot dementia years early
Knowledge-focused OngoingThis study tracks a protein called neurofilament light chain in the blood of 342 people who carry genetic mutations linked to frontotemporal dementia (FTD). Participants provide blood samples every three months for three years, often from home. The goal is to see if this biomarke…
Sponsor: The Bluefield Project to Cure Frontotemporal Dementia • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Scientists map Brain's 'Roads' to predict dementia spread
Knowledge-focused ENROLLING_BY_INVITATIONThis study uses advanced MRI scans and genetic tests to track how neurodegenerative diseases like frontotemporal dementia and ALS spread across the brain's network. Researchers will follow 645 participants, including patients, family members, and healthy controls, for up to 2 yea…
Phase: NA • Sponsor: IRCCS San Raffaele • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:29 UTC
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Wearable tech aims to track rare brain diseases from home
Knowledge-focused OngoingThis study is testing whether wearable sensors can reliably monitor movement problems in people with progressive supranuclear palsy (PSP) and related frontotemporal disorders. About 60 participants will wear pendant-like devices for 12 months to track their activity. The goal is …
Sponsor: Massachusetts General Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:12 UTC
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Mayo clinic launches major brain disease tracking study
Knowledge-focused ENROLLING_BY_INVITATIONThis study aims to learn more about diseases that affect the brain, such as Parkinson's disease and different types of dementia. Researchers will follow 500 adults with symptoms of these conditions over time, using brain scans and genetic tests to see how the diseases progress. T…
Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:58 UTC
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New study probes brain inflammation to unlock dementia mysteries
Knowledge-focused OngoingThis observational study looks at how brain inflammation contributes to frontotemporal lobar degeneration (FTLD), a group of disorders that cause dementia. Researchers will use advanced brain scans, blood tests, and spinal fluid analysis in 110 participants to find biomarkers tha…
Sponsor: Leiden University Medical Center • Aim: Knowledge-focused
Last updated Jun 26, 2026 15:38 UTC