A Study to Evaluate the Safety and Effect of AVB-101, a Gene Therapy Product, in Subjects With a Genetic Sub-type of Frontotemporal Dementia (FTD-GRN)

Recruiting now · Phase 1/Phase 2

Conditions studied: Frontotemporal Dementia, FTD, FTD-GRN, Dementia, Frontotemporal

In brief

The goal of this clinical study is to learn about an investigational gene therapy product called AVB-101, which is designed to treat a disease called Frontotemporal Dementia with Progranulin Mutations (FTD-GRN). FTD-GRN is an early-onset form of dementia, a progressive brain disorder that affects behavior, language and movement. These symptoms result from below normal levels of a protein called progranulin (PGRN) in the brain, which leads to the death of nerve cells (neurons), affecting the brain's ability to function. The main questions that the study aims to answer are: 1. Is a one-time treatment with AVB-101 safe for patients with FTD-GRN? 2. Does a one-time treatment with AVB-101 restore PGRN levels to at least normal levels? 3. Could AVB-101 work as a treatment to slow down or stop progression of FTD-GRN? In this study there is no placebo (a dummy pill or treatment used for comparison purposes), so all participants will receive a one-time treatment of AVB-101 delivered directly to the brain, with follow-up assessments for 5 years.

Key facts

Study ID

NCT06064890

Run by

AviadoBio Ltd

People needed

18

Starts

2023-08-30

Expected to finish

2030-03-21

Last updated by the study team

2026-04-13

Who can join

Age: 30 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female, 30 to 75 years of age
• Carriers of a pathogenic GRN mutation
• FTD as evidenced by CDR + NACC FTLD global score of 0.5, 1.0, or 2.0
• Presence of 1 or more of the criteria for diagnosis of possible bvFTD or PPA
• Able and willing to comply with all procedures and the study visit schedule
• Able and willing to give written informed consent prior to study participation, and agree to designate a legal representative to act on their wishes to continue participation should they lose capacity to consent at some point during the study OR If, in the Investigator's opinion, the subject lacks capacity to consent, written informed consent of their legal representative must be obtained in accordance with local laws, regulations, and/or customs. In countries where local laws, regulations, and/or customs do not permit subjects who lack capacity to consent to participate in this study, these subjects will not be enrolled
• An identified, informed study partner who is able and willing to support the participant in the study and to provide assessments of the participant during the study

You may not qualify if…

• Severe dementia, defined as CDR + NACC FTLD global score of 3.0, or other symptoms that preclude the ability to comply with study procedures and/or pose unacceptable safety risk to the subject
• Any concurrent disease that may cause cognitive impairment unrelated to mutations in the GRN gene, such as other causes of dementia, neurosyphilis, hydrocephalus, stroke, small vessel ischemic disease, uncontrolled hypothyroidism, or vitamin B12 deficiency
• Clinically significant abnormality on MRI at Screening considered to be a contraindication to Intrathalamic infusion
• Surgically significant pattern of brain atrophy on MRI at Screening that interferes with planned neurosurgical trajectory
• Previous treatment with any gene or cell therapy
• Previous treatment with any investigational medicinal product (IMP) within 60 days or 5 half-lives (whichever is longer) prior to study drug treatment
• Concomitant disease, any clinically significant laboratory abnormality, or treatment which, in the opinion of the Investigator, may pose an unacceptable safety risk to the participant or interfere with study conduct or the participant's ability to comply with study procedures including neurosurgical administration under anesthesia

Where it is running

• The Ohio State University (OSU) Wexner Medical Center — Columbus, Ohio, United States (enrolling)
• Vanderbilt University Medical Centre — Nashville, Tennessee, United States (enrolling)
• Houston Methodist Hospital — Houston, Texas, United States (enrolling)
• UZ Leuven — Leuven, Belgium (enrolling)
• Sunnybrook Health Sciences Centre — Toronto, Ontario, Canada (enrolling)
• Fondazione IRCCS Istituto Neurologico Carlo Besta — Milan, Italy (enrolling)
• Amsterdam UMC — Amsterdam, Netherlands (enrolling)
• NEURO-CARE Sp. z o.o. Sp. Komandytowa — Katowice, Poland (enrolling)
• Neurologia Slaska Centrum Medyczne — Katowice, Poland (enrolling)
• Uniwersyteckie Centrum Kliniczne, SUM w Katowicach — Katowice, Poland (enrolling)
• Euromedis Sp. z o.o. — Szczecin, Poland (enrolling)
• Centrum Medyczne NeuroProtect Sp z o.o. — Warsaw, Poland (enrolling)
• Mazowiecki Szpital Brodnowski Sp. z o. o. — Warsaw, Poland (enrolling)
• Hospital Clinic Barcelona — Barcelona, Spain (enrolling)
• Hospital Universitari i Politecnic La Fe — Valencia, Spain (enrolling)
• Skåne University Hospital — Lund, Sweden (enrolling)
• Cambridge University Hospitals NHS Foundation Trust — Cambridge, United Kingdom (enrolling)
• University Hospital of Wales — Cardiff, United Kingdom (enrolling)
• University College London Hospitals — London, United Kingdom (enrolling)

Full record on ClinicalTrials.gov

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