Phase 1/2 Clinical Trial of PR006 in Patients With Frontotemporal Dementia With Progranulin Mutations (FTD-GRN) (PROCLAIM)
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT04408625 |
Recruitment Status :
Recruiting
First Posted : May 29, 2020
Last Update Posted : April 7, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Frontotemporal Dementia | Biological: PR006 Drug: Methylprednisolone Drug: Sirolimus Drug: Prednisone Drug: Rituximab | Phase 1 Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 15 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1/2 Ascending Dose Study to Evaluate the Safety and Effects on Progranulin Levels of PR006A in Patients With Fronto-Temporal Dementia With Progranulin Mutations (FTD-GRN) |
Actual Study Start Date : | November 9, 2020 |
Estimated Primary Completion Date : | December 2027 |
Estimated Study Completion Date : | December 2027 |

Arm | Intervention/treatment |
---|---|
Experimental: Low dose |
Biological: PR006
Participants will receive a single dose of PR006, administered intra cisterna magna Drug: Methylprednisolone 1-2 IV pulses administered as concomitant medication Drug: Sirolimus Loading dose, followed by maintenance dose, followed by dose tapering; administered as concomitant medication Drug: Prednisone Administered orally as concomitant medication, followed by dose tapering. Drug: Rituximab Single IV pulse administered as concomitant medication. |
Experimental: Medium dose |
Biological: PR006
Participants will receive a single dose of PR006, administered intra cisterna magna Drug: Methylprednisolone 1-2 IV pulses administered as concomitant medication Drug: Sirolimus Loading dose, followed by maintenance dose, followed by dose tapering; administered as concomitant medication Drug: Prednisone Administered orally as concomitant medication, followed by dose tapering. Drug: Rituximab Single IV pulse administered as concomitant medication. |
Experimental: High dose |
Biological: PR006
Participants will receive a single dose of PR006, administered intra cisterna magna Drug: Methylprednisolone 1-2 IV pulses administered as concomitant medication Drug: Sirolimus Loading dose, followed by maintenance dose, followed by dose tapering; administered as concomitant medication Drug: Prednisone Administered orally as concomitant medication, followed by dose tapering. Drug: Rituximab Single IV pulse administered as concomitant medication. |
- Number of Adverse Events (AEs), Serious Adverse Events (SAEs), and Adverse Events Leading to discontinuation [ Time Frame: Year 5 ]
- Sum of adverse reactions (ARs) and suspected ARs [ Time Frame: 5 years ]
- Sum of serious ARs and serious suspected ARs [ Time Frame: 5 years ]
- Incidence of procedure or treatment-emergent AEs [ Time Frame: 5 years ]Measured by brain and spine MRI
- Change in PGRN immunogenicity in blood [ Time Frame: Baseline and 12 months ]PGRN: progranulin protein. Measured by level of antibodies and ELISPOT
- Change in PGRN immunogenicity in CSF [ Time Frame: Baseline and 12 months ]CSF: cerebrospinal fluid
- Change in AAV9 immunogenicity in blood [ Time Frame: Baseline and 12 months ]Measured by level of antibodies and ELISPOT.
- Change in AAV9 immunogenicity in CSF [ Time Frame: Baseline and 12 months ]Measured by levels of antibodies.
- Change in PGRN levels in blood [ Time Frame: Baseline and 12 months ]
- Change in PGRN levels in CSF [ Time Frame: Baseline and 12 months ]
- Change in CDR plus NACC FTLD [ Time Frame: Baseline and 12 months ]CDR: Clinical Dementia Rating staging instrument. NACC FTLD: National Alzheimer's Coordinating Center frontotemporal lobar degeneration domains
- Change in NfL levels in blood [ Time Frame: Baseline and 12 months ]NfL: neurofilament light chain
- Change in NfL levels in CSF [ Time Frame: Baseline and 12 months ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 30 Years to 80 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Body weight range of ≥40 kg (88 lbs) to ≤110 kg (242 lb) and a BMI of 18 to 34 kg/m2.
- Has symptomatic frontotemporal dementia (FTD) per investigator assessment.
- Stable use of background medications at least 8 weeks prior to PR006A dosing.
- Carrier of a pathogenic GRN (progranulin gene) mutation.
- Negative screening test for Mycobacterium tuberculosis (MTB) or documented negative MTB test within 1 year prior to screening.
- Age- and gender-appropriate cancer screenings are up-to-date.
- Patient and/or patient's legally authorized representative has the ability to understand the purpose and risks of the study, and provide written informed consent and authorization to use protected health information.
- Patient has a reliable study partner/informant (e.g. family member, friend) willing and able to participate in the study as a source of information on the patient's health status and cognitive and functional abilities.
- Patient is not dependent on a walker or wheelchair.
- Patient is living in the community (i.e. not in nursing home); some levels of assisted living may be permitted at the discretion of the investigator.
- Pneumococcal pneumonia and shingles vaccines are required within 10 years of Screening (allowed to be performed during Screening but must be given at least 4 weeks prior to initiation of immunosuppressant regimen).
Exclusion Criteria:
- Diagnosis of a significant CNS (central nervous system) disease other than frontotemporal dementia (FTD) that may cause FTD symptoms or confound study objectives.
- Brain or cervical magnetic resonance image (MRI)/MRA imaging showing clinically significant abnormality considered to prevent intracisternal injection.
- Hypersensitivity or contraindications to corticosteroid, rituximab, and/or sirolimus use.
- Clinical evidence of peripheral symmetric sensory polyneuropathy (stable sensory mononeuropathies and radiculopathies are not exclusionary).
- Concomitant disease or condition within 6 months of screening that could interfere with, or treatment of which might interfere with, the conduct of the study or that would, in the opinion of the investigator, pose an unacceptable safety risk to the patient or interfere with the patient's ability to comply with study procedures
- Clinically significant laboratory test result abnormalities assessed at screening.
- Participation within 3 months prior to screening in another therapeutic investigational drug or device study with purported disease-modifying effects on FTD, unless it can be documented that the patient received placebo only.
- Any type of prior gene or cell therapy.
- Immunizations (live vaccines) in the 4 weeks prior to Screening. Pneumococcal vaccine and/or shingles vaccine administration is allowed at least 4 weeks prior to initiation of immunosuppressant regimen.
- Use of blood thinners in the 2 weeks prior to screening, or anticipated use of blood thinners during the study. Antiplatelet therapies are acceptable if the patient is medically able to temporarily stop 48 hours to 7 days (depending on the antiplatelet medication used) prior to and at least 48 hours after intracisternal injection and lumbar puncture.
- Contraindications or intolerance to imaging methods (MRA, MRI, CT) and intolerance to contrast agents.
- Contraindications to general anesthesia or deep sedation.
Other protocol-defined inclusion/exclusion criteria may apply

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04408625
Contact: Prevail Therapeutics | (917) 336-9310 | prevail.patients@lilly.com |
United States, Florida | |
Bioclinica Orlando, 100 West Gore Street, Suite 202 | Recruiting |
Orlando, Florida, United States, 32806 | |
Contact: Sarah Poissant 689-216-3100 sarah.poissant@ppd.com | |
United States, Pennsylvania | |
Hospital of the University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street | Recruiting |
Philadelphia, Pennsylvania, United States, 19104 | |
Contact: Dahlia Kamel 215-662-6134 kamel.dahlia@pennmedicine.upenn.edu | |
Australia, New South Wales | |
Royal Prince Alfred Hospital, Brain & Mind Research Institute, 94 Mallet Street | Recruiting |
Camperdown, New South Wales, Australia, 2050 | |
Contact: Cassandra Kaizik 02 9515 4540 cassandra.kaizik@sydney.edu.au | |
Belgium | |
UZ Leuven, Neurologie Herestraat 49 | Recruiting |
Leuven, Belgium, 3000 | |
Contact: Carine Schildermans 3126345500 carine.schildermans@uzleuven.be | |
Spain | |
Hospital Clinic de Barcelona, Villaroel 170 Servicio de Neurología | Recruiting |
Barcelona, Spain, 08036 | |
Contact: Beatriz Bosch Capdevila, PhD [+34] 934518240 ext 3088 beabc6@hotmail.com/bbosch@clinic.cat | |
Hospital Universitario de Donostia, Servicio De Neurologia, Consultas Externas Neurologia, San Sebastian, Guipúzcoa | Recruiting |
San Sebastian, Spain, 20014 | |
Contact: Fermin Moreno +39 443007027 fermin.morenoizco@osakidetza.eus | |
United Kingdom | |
University College London,Queen Square, Dementia Research Building, London, | Recruiting |
London, United Kingdom, WC1N 3BG | |
Contact: Miguel Alvarez miguel.alvarez.13@ucl.ac.uk |
Study Director: | Olga Uspenskaya-Cadoz, MD, PhD | Prevail Therapeutics |
Responsible Party: | Prevail Therapeutics |
ClinicalTrials.gov Identifier: | NCT04408625 |
Other Study ID Numbers: |
PRV-FTD101 |
First Posted: | May 29, 2020 Key Record Dates |
Last Update Posted: | April 7, 2023 |
Last Verified: | April 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Fronto-Temporal Dementia Frontotemporal Dementia Progranulin Mutations FTD-GRN |
Gene Therapy Dementia Gene Therapy AAV9 |
Dementia Frontotemporal Dementia Aphasia, Primary Progressive Pick Disease of the Brain Brain Diseases Central Nervous System Diseases Nervous System Diseases Neurocognitive Disorders Mental Disorders Neurodegenerative Diseases Frontotemporal Lobar Degeneration TDP-43 Proteinopathies Proteostasis Deficiencies Metabolic Diseases Aphasia |
Speech Disorders Language Disorders Communication Disorders Neurobehavioral Manifestations Neurologic Manifestations Sirolimus Prednisone Methylprednisolone Rituximab Antineoplastic Agents, Immunological Antineoplastic Agents Immunologic Factors Physiological Effects of Drugs Antirheumatic Agents Anti-Inflammatory Agents |