Safety and Efficacy Study Evaluating TRx0237 in Subjects With Behavioral Variant Frontotemporal Dementia (bvFTD)

  • Study type:

    Interventional What is this?

    Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Study phase:

    III What is this?

    During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Study IDs

  • Site IRB:

    • Jacksonville, Florida: 12-008706
    • Rochester, Minnesota: 12-008706
  • NCT ID:

    NCT01626378
  • Sponsor Protocol Number:

    TRx-237-007

About this study

The purpose of this study is to demonstrate the safety and efficacy of TRx0237 in the treatment of patients with behavioral variant frontotemporal dementia (bvFTD).

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • Diagnosis of probable bvFTD
  • Centrally rated frontotemporal atrophy score of 2 or greater on brain MRI
  • MMSE ≥20
  • Age <80 years
  • Modified Hachinski ischemic score of ≤ 4
  • Females, if of child-bearing potential, must practice true abstinence or be competent to use adequate contraception and agree to maintain this throughout the study
  • Subject, and/or, in the case of reduced decision-making capacity, legally acceptable representative(s) consistent with national law is/are able to read, understand, and provide written informed consent
  • Has one (or more) identified adult caregiver who is willing to provide written informed consent for his/her own participation; is able to read, understand, and speak the designated language at the study site; either lives with the subject or sees the subject for ≥2 hours/day ≥3 days/week; agrees to accompany the subject to each study visit; and is able to verify daily compliance with study drug
  • If currently taking an acetylcholinesterase inhibitor and/or memantine, the subject must have been taking such medication(s) for ≥3 months. The dosage regimen must have remained stable for ≥6 weeks and it must be planned to remain stable throughout participation in the study.
  • Able to comply with the study procedures

Exclusion Criteria:

  • Significant central nervous system (CNS) disorder other than bvFTD
  • Significant focal or vascular intracranial pathology seen on brain MRI scan
  • Biomarker evidence of underlying Alzheimer's disease pathology
  • Expressive language deficits
  • Meets research criteria for Amyotrophic Lateral Sclerosis or motor neuron disease
  • Meets diagnostic criteria for probable bvFTD but has a proven mutation producing non-tau, non-TDP-43 pathology
  • Clinical evidence or history of stroke, transient ischemic attack, significant head injury or other unexplained or recurrent loss of consciousness ≥15 minutes
  • Epilepsy
  • Rapid eye movement sleep behavior disorder
  • Major depressive disorder, schizophrenia, or other psychotic disorders, bipolar disorder, substance (including alcohol) related disorders
  • Metal implants in the head (except dental), pacemaker, cochlear implants, or any other non-removable items that are contraindications to MRI; magnetic resonance compatible prosthetics, clips, stents, or any other device proven to be compatible will be allowed
  • Resides in hospital or moderate to high dependency continuous care facility
  • History of swallowing difficulties
  • Pregnant or breastfeeding
  • Glucose-6-phosphate dehydrogenase deficiency
  • History of significant hematological abnormality or current acute or chronic clinically significant abnormality
  • Abnormal serum chemistry laboratory value at Screening deemed to be clinically relevant by the investigator
  • Clinically significant cardiovascular disease or abnormal assessments
  • Preexisting or current signs or symptoms of respiratory failure
  • Concurrent acute or chronic clinically significant immunologic, hepatic, or endocrine disease (not adequately treated) and/or other unstable or major disease other than bvFTD
  • Diagnosis of cancer within the past 2 years prior to Baseline (other than basal cell or squamous cell skin cancer or Stage 1 prostate cancer) unless treatment has resulted in complete freedom from disease for at least 2 years
  • Prior intolerance or hypersensitivity to methylthioninium-containing drug, similar organic dyes, or any of the excipients
  • Treatment currently or within 90 days before Baseline with any of the following medications (unless otherwise noted):
    • Tacrine
    • Amphetamine or dexamphetamine
    • Clozapine, olanzapine (and there is no intent to initiate therapy during the course of the study)
    • Carbamazepine, primidone
    • Drugs for which there is a warning or precaution in the labeling about methemoglobinemia at approved doses
  • Current or prior participation in a clinical trial as follows:
    • Clinical trial of a product for cognition within 3 months (unless confirmed to have been randomized to placebo)
    • A clinical trial of a drug, biologic, device, or medical food in which the last dose/administration was received within 28 days prior to Baseline

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Jacksonville, Fla.

Mayo Clinic principal investigator

David Knopman, M.D.

Contact us for the latest status

Dana Haley

(904)953-9680

Haley.Dana@mayo.edu

Rochester, Minn.

Mayo Clinic principal investigator

David Knopman, M.D.

Contact us for the latest status

Debra Gearhart

(507)284-1324

Gearhart.Debra2@mayo.edu