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Biomarker and diagnostic research for primary progressive apraxia of speech has been reported in the published literature.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
6 clinical trials registered, 2 recruiting. Interventions under study include drug therapy, other interventions, and medical devices. Pipeline includes 1 PHASE4, 1 PHASE2, 2 NA. Research is primarily sponsored by academic and government institutions.
NCT ID | Title | Phase | Sponsor | Status |
|---|---|---|---|---|
[NCT01818661](https://clinicaltrials.gov/study/NCT01818661) |
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 10:24 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Longitudinal Multi-Modality Imaging in Progressive Apraxia of Speech |
PHASE4 |
Mayo Clinic |
RECRUITING |
[NCT04680130](https://clinicaltrials.gov/study/NCT04680130) | Clinico-Pathologic-Genetic-Imaging Study of Neurodegenerative and Related Disorders | — | Mayo Clinic | ENROLLING_BY_INVITATION |
[NCT07511179](https://clinicaltrials.gov/study/NCT07511179) | Personalized Closed-Loop Brain Stimulation for Patients With Primary Progressive Aphasia | NA | Johns Hopkins University | NOT_YET_RECRUITING |
[NCT05742698](https://clinicaltrials.gov/study/NCT05742698) | Nabilone for Agitation in Frontotemporal Dementia | PHASE2 | Simon Ducharme, MD | UNKNOWN |
[NCT05368350](https://clinicaltrials.gov/study/NCT05368350) | Treating Primary Progressive Aphasia and Apraxia of Speech Using Non-invasive Brain Stimulation | NA | The University of Texas at Dallas | ACTIVE_NOT_RECRUITING |
20 publications have been identified in PubMed for primary progressive apraxia of speech. Research spans Epidemiology / Natural History (30%), Review / Meta-Analysis (20%), and Case Report / Case Series (20%).
Research Type | Count | % of Total |
|---|---|---|
Disease patterns and progression | 6 | 30% |
Research summaries | 4 | 20% |
Patient case studies | 4 | 20% |
Testing and diagnosis research | 3 | 15% |
Laboratory research | 2 | 10% |
Other research | 1 | 5% |
Teichmann M (2026). [PMID: 42192822](https://pubmed.ncbi.nlm.nih.gov/42192822/). *Brain Sci*. [Review / Meta-Analysis]
Wang F (2026). [PMID: 41800702](https://pubmed.ncbi.nlm.nih.gov/41800702/). *Clin Linguist Phon*. [Basic Science / Preclinical]
Hossain N (2026). [PMID: 42222269](https://pubmed.ncbi.nlm.nih.gov/42222269/). *Neuroimage Rep*. [Case Report / Case Series]
Singh-Reilly N (2026). [PMID: 42164430](https://pubmed.ncbi.nlm.nih.gov/42164430/). *Front Neurosci*. [Review / Meta-Analysis]
Utianski RL (2026). [PMID: 41499662](https://pubmed.ncbi.nlm.nih.gov/41499662/). *Am J Speech Lang Pathol*. [Diagnostic / Biomarker]
Bernad M (2025). [PMID: 40124978](https://pubmed.ncbi.nlm.nih.gov/40124978/). *Clin Park Relat Disord*. [Case Report / Case Series]
Silveri MC (2025). [PMID: 40833450](https://pubmed.ncbi.nlm.nih.gov/40833450/). *Neurol Sci*. [Review / Meta-Analysis]
Meade G (2025). [PMID: 40272101](https://pubmed.ncbi.nlm.nih.gov/40272101/). *Ann Clin Transl Neurol*. [Epidemiology / Natural History]
Patra N (2025). [PMID: 40178743](https://pubmed.ncbi.nlm.nih.gov/40178743/). *Neurol Sci*. [Other]
Hossain N (2025). [PMID: 40993958](https://pubmed.ncbi.nlm.nih.gov/40993958/). *Eur J Neurol*. [Epidemiology / Natural History]