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Progressive non-fluent aphasia
MONDO:0015059Progressive non-fluent aphasia (PNFA) is a form of frontotemporal dementia (FTD), characterized by agrammatism, laborious speech, alexia, and agraphia, frequently accompanied by apraxia of speech (AOS). Language comprehension is relatively preserved.
Also known as: Agramatic variant of PPA, Agramatic variant of primary progressive aphasia, Primary Progressive Nonfluent aphasia, non-fluent variant PPA, non-fluent primary progressive aphasia
60 clinical trials for this condition and its sub-types, 23 tagged with Progressive non-fluent aphasia itself.
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Sub-types of Progressive non-fluent aphasia
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Semantic dementia 32 trials
1 sub-type
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New study seeks to sharpen Alzheimer's diagnosis with simple tests
Diagnosis Recruiting nowThis study aims to find the best cutoff values for key Alzheimer's-related proteins in spinal fluid and blood to improve diagnostic accuracy. Researchers will compare results from Alzheimer's patients, those with mild memory problems, people with other dementias, and healthy olde…
Sponsor: Capital Medical University • Aim: Diagnosis
Last updated Jun 27, 2026 12:00 UTC
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Simple blood test could revolutionize Alzheimer's diagnosis
Diagnosis Recruiting nowThis study is testing a new blood test called the AD-seeds-detector that looks for specific protein clumps linked to Alzheimer's disease. Researchers will compare the test results from 1,500 people aged 55-75, including those with Alzheimer's, other dementias, and healthy individ…
Sponsor: Capital Medical University • Aim: Diagnosis
Last updated Jun 27, 2026 12:00 UTC
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Could a mild zap to the brain help you find your words?
Symptom relief Recruiting nowThis Phase II trial tests whether a safe, non-invasive brain stimulation technique called tDCS, combined with language therapy, can improve word-finding in people with primary progressive aphasia (PPA). The study enrolls 180 adults aged 50–90 with certain types of PPA. Participan…
Phase 2 • Sponsor: Johns Hopkins University • Aim: Symptom relief
Last updated Jun 27, 2026 12:29 UTC
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New virtual therapy aims to help dementia patients communicate better with loved ones
Symptom relief Recruiting nowThis study tests a personalized, virtual speech therapy program for people with primary progressive aphasia (a type of dementia that affects language) and their communication partners. The goal is to see if the program improves communication and quality of life. About 30 particip…
Sponsor: Maya Henry • Aim: Symptom relief
Last updated Jun 27, 2026 12:23 UTC
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Can tracking brain changes over time unlock the secrets of frontotemporal dementia?
Knowledge-focused Recruiting nowThis long-term study follows people with or at genetic risk for frontotemporal lobar degeneration (FTLD), a group of brain disorders that cause changes in behavior, language, and movement. Researchers will use brain scans, memory tests, and blood samples to measure how the diseas…
Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Aug 01, 2026 00:00 UTC
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Brain scans and speech tests could unlock mystery of rare speech disorder
Knowledge-focused Recruiting nowThis study at Mayo Clinic looks at two different types of Progressive Apraxia of Speech, a condition that makes it hard to speak clearly. Researchers will use brain scans, speech assessments, and thinking tests in 47 adults to better tell these types apart. The goal is to improve…
Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:28 UTC
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Massive brain study aims to catch dementia early
Knowledge-focused Recruiting nowThis study follows nearly 3,000 people, including healthy adults and those with memory or movement problems, to learn how brain diseases like Alzheimer's and Parkinson's develop. Researchers use advanced brain scans and tests to track changes over time. The goal is to improve ear…
Sponsor: Skane University Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:04 UTC
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Scientists track how language fades in rare brain disease
Knowledge-focused Recruiting nowThis study follows 500 people with primary progressive aphasia, a condition that slowly damages the brain's language areas. Researchers will use brain scans and language tests to map how the disease progresses over time. The goal is to better understand the disease, not to test a…
Sponsor: Northwestern University • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:08 UTC
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New brain scan study aims to unravel mysteries of speech disorder
Knowledge-focused Recruiting nowThis study uses advanced brain scans, including a special PET tracer called AV-1451, to track changes in the brains of 50 people with progressive apraxia of speech (a disorder that affects the ability to coordinate speech movements). Researchers at Mayo Clinic will compare these …
Phase 4 • Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:57 UTC