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Safety and Efficacy Study Evaluating TRx0237 in Subjects With Mild to Moderate Alzheimer's Disease

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ClinicalTrials.gov Identifier: NCT01689246
Recruitment Status : Completed
First Posted : September 21, 2012
Last Update Posted : March 14, 2018
Sponsor:
Information provided by (Responsible Party):
TauRx Therapeutics Ltd

Tracking Information
First Submitted Date  ICMJE September 14, 2012
First Posted Date  ICMJE September 21, 2012
Last Update Posted Date March 14, 2018
Study Start Date  ICMJE January 2013
Actual Primary Completion Date November 2015   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: April 7, 2016)
  • Change from Baseline on Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL23) [ Time Frame: 65 weeks ]
  • Change from Baseline on Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-cog11) [ Time Frame: 65 weeks ]
  • Number of study participants who tolerate oral doses of TRx0237 as determined by safety parameter changes [ Time Frame: 65 weeks ]
    Safety parameters include adverse events, vital signs, methemoglobin and oxygen saturation, physical and neurological examinations, laboratory tests (hematology, serum chemistry, and urinalysis), electrocardiograms, potential for suicide and self-harm, brain magnetic resonance imaging (MRI), and potential for serotonin toxicity
Original Primary Outcome Measures  ICMJE
 (submitted: September 20, 2012)
  • Change from Baseline in Alzheimer's Disease Cooperative Study - Clinical Global Impression of Change (ADCS-CGIC) [ Time Frame: 52 weeks ]
  • Change from Baseline in Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-cog11) [ Time Frame: 52 weeks ]
  • Number of study participants who tolerate oral doses of TRx0237 as determined by safety parameter changes [ Time Frame: 52 weeks ]
    Safety parameters include adverse events, vital signs, methemoglobin, physical and neurological examinations, laboratory tests (hematology, serum chemistry, and urinalysis), electrocardiograms, potential for suicidal behaviour and thoughts, and brain MRI
Change History Complete list of historical versions of study NCT01689246 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE
 (submitted: April 7, 2016)
  • Change from Baseline on Alzheimer's Disease Cooperative Study - Clinical Global Impression of Change (ADCS-CGIC) [ Time Frame: 65 weeks ]
  • Change from Baseline on Mini-Mental Status Examination (MMSE) [ Time Frame: 65 weeks ]
  • Change in expected decline of whole brain volume as measured by brain MRI [ Time Frame: 39 weeks and 65 weeks ]
Original Secondary Outcome Measures  ICMJE
 (submitted: September 20, 2012)
  • Change from Baseline in Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL23) [ Time Frame: 52 weeks ]
  • Change from Baseline in Mini-Mental Status Examination (MMSE) [ Time Frame: 52 weeks ]
Current Other Pre-specified Outcome Measures
 (submitted: April 7, 2016)
  • Reduction in glucose uptake decline in the temporal lobe on 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) imaging [ Time Frame: 39 weeks and 65 weeks ]
  • Change in expected increase in ventricular volume and decline in hippocampal volume as evaluated by MRI [ Time Frame: 39 weeks and 65 weeks ]
  • Change in resource utilization using the Resource Utilization in Dementia (RUD) Lite [ Time Frame: 65 weeks ]
  • Change from Baseline on cerebrospinal fluid biomarkers of Alzheimer's Disease in subjects who separately consent to lumbar puncture [ Time Frame: 65 weeks ]
  • Compare the influence of Apolipoprotein E genotype on the primary and selected secondary outcomes in subjects by or for whom legally acceptable consent is separately provided [ Time Frame: 65 weeks ]
Original Other Pre-specified Outcome Measures
 (submitted: September 20, 2012)
  • Reduction in glucose uptake decline by FDG-PET/CT of the temporal lobes [ Time Frame: 52 weeks ]
  • Change in expected decline of whole brain volume as measured by brain MRI [ Time Frame: 52 weeks ]
 
Descriptive Information
Brief Title  ICMJE Safety and Efficacy Study Evaluating TRx0237 in Subjects With Mild to Moderate Alzheimer's Disease
Official Title  ICMJE Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, 15-Month Trial of TRx0237 in Subjects With Mild to Moderate Alzheimer's Disease
Brief Summary The purpose of this study is to determine the safety and efficacy of TRx0237 in the treatment of subjects with mild to moderate Alzheimer's Disease.
Detailed Description Not Provided
Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 3
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Condition  ICMJE Alzheimer's Disease
Intervention  ICMJE
  • Drug: TRx0237 150 mg/day
    TRx0237 75 mg tablets will be administered twice daily.
  • Drug: TRx0237 250 mg/day
    TRx0237 125 mg tablets will be administered twice daily.
  • Drug: Placebo
    Placebo tablets will be administered twice daily. The active placebo tablets include 4 mg of TRx0237 as a urinary and fecal colorant to maintain blinding; hence the placebo group will receive a total of 8 mg/day of TRx0237.
Study Arms  ICMJE
  • Experimental: TRx0237 250 mg/day
    Intervention: Drug: TRx0237 250 mg/day
  • Placebo Comparator: Placebo
    Intervention: Drug: Placebo
  • Experimental: TRx0237 150 mg/day
    Intervention: Drug: TRx0237 150 mg/day
Publications * Gauthier S, Feldman HH, Schneider LS, Wilcock GK, Frisoni GB, Hardlund JH, Moebius HJ, Bentham P, Kook KA, Wischik DJ, Schelter BO, Davis CS, Staff RT, Bracoud L, Shamsi K, Storey JM, Harrington CR, Wischik CM. Efficacy and safety of tau-aggregation inhibitor therapy in patients with mild or moderate Alzheimer's disease: a randomised, controlled, double-blind, parallel-arm, phase 3 trial. Lancet. 2016 Dec 10;388(10062):2873-2884. doi: 10.1016/S0140-6736(16)31275-2. Epub 2016 Nov 16.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: April 7, 2016)
891
Original Estimated Enrollment  ICMJE
 (submitted: September 20, 2012)
833
Actual Study Completion Date  ICMJE November 2015
Actual Primary Completion Date November 2015   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • Diagnosis of all cause dementia and probable Alzheimer's disease
  • Clinical Dementia Rating (CDR) total score of 1 (mild) to 2 (moderate) and MMSE score of 14-26 (inclusive)
  • Age < 90 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 at the time of Screening, 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 Alzheimer's disease
  • Significant focal or vascular intracranial pathology seen on brain MRI scan
  • Clinical evidence or history of stroke, transient ischemic attack, significant head injury or other unexplained or recurrent loss of consciousness ≥15 minutes
  • Epilepsy
  • Major depressive disorder, schizophrenia, or other psychotic disorders, bipolar disorder, or 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
  • 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 Alzheimer's disease
  • 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 3 months before Baseline with any of the following medications:

    • Tacrine
    • Clozapine, olanzapine (and there is no intent to initiate therapy during the course of the study)
    • Carbamazepine, primidone
    • Drugs with 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 of Screening (unless confirmed to have been randomized to placebo)
    • A clinical trial of a drug, biologic, therapeutic device, or medical food in which the last dose/administration was received within 28 days prior to Baseline
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE up to 89 Years   (Child, Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Australia,   Bulgaria,   Canada,   Croatia,   Germany,   Italy,   Korea, Republic of,   Malaysia,   Poland,   Romania,   Russian Federation,   Singapore,   Spain,   Taiwan,   United Kingdom,   United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT01689246
Other Study ID Numbers  ICMJE TRx-237-015
Has Data Monitoring Committee Yes
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party TauRx Therapeutics Ltd
Study Sponsor  ICMJE TauRx Therapeutics Ltd
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account TauRx Therapeutics Ltd
Verification Date March 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP