Allied Biomedical Research Institute | Miami, FL
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Randomized efficacy and safety study of piromelatine 20 mg versus placebo in participants with mild dementia due to Alzheimer's disease (AD) who are 2:107,510,000-107,540,000 polymorphism non-carriers with the primary objective to compare the effect of piromelatine to that of placebo on the AD Assessment Scale cognitive subscale (ADAS-cog14) at Week 26 of double-blind treatment.
Full description
This study of piromelatine 20 mg versus placebo in participants with mild dementia due to Alzheimer's disease is conducted as a confirmatory, randomized efficacy and safety study in participants who are 2:107,510,000-107,540,000 polymorphism non-carriers (N=225). Participants will be randomized in a 1:1 allocation ratio to receive either piromelatine 20 mg or placebo for 26 weeks. Medication is to be administered orally, one tablet daily, taken 1-2 hours before going to bed (preferably between 2100h and 2200h) and after food.
To differentiate between symptomatic effects and potential disease modifying effects of piromelatine, there will be a delayed-start open-label extension period of 12 months treatment wherein placebo-treated participants will be treated with piromelatine (20 mg daily) and the piromelatine-treated patients will be continued. This exploratory phase is aimed to continue randomized assignment of piromelatine treatment, long-term (18 months overall) to evaluate its potential disease modifying effect compared to patients in the placebo-randomized group who started the treatment after a 6-month delay.
The primary efficacy analysis (blinded) is planned after completion of the 26 weeks double blind period. If efficacy is not confirmed, then the study will be ended without completing the extension period
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Inclusion criteria
Exclusion criteria
Declines whole genome screening for 2:107,510,000-107,540,000 polymorphism and APOE4 genotyping.
Patient is 2:107,510,000-107,540,000 polymorphism carrier.
Patient has an alternative cause for dementia other than AD.
A past or recent CT or MRI scan or report indicating any cortical infarct defined as > 1.5 cm3; more than 2 lacunar infracts defined as ≤ 1.5 cm3; or diffuse white matter disease), Fazekas score of more than 1 on MRI or CT scan (more details Appendix 3).
Patient has evidence of any clinically significant neurodegenerative disease, or other serious neurological disorders other than AD as detailed in Appendix 3,
Patient has a concurrent psychiatric disorder that prevents his/her participation in the trial including but not limited to Schizophrenia, Bipolar and related disorders, Substance use disorders within the past 2 years, major depression, etc.
Patient has a history of uncontrolled or untreated cardiovascular, endocrine, gastrointestinal, respiratory, or rheumatologic disorders within the past 5 years.
Patient has a history of severe agitation and medically treated agitation.
Patient has a history of serious infectious disease including:
Patient has a history of a primary or recurrent malignant disease that has not been in remission for > 5 years prior to the Screening visit, with the exceptions of excised cutaneous squamous cell carcinoma in situ, basal cell carcinoma without recurrences; and history of intraductal breast cancer, cervical carcinoma in situ, or in situ prostate cancer resected over 5 years previously. (For resected in situ prostate cancer, i.e., high grade intraepithelial neoplasia, the patient must have a normal prostate specific antigen [PSA] prior to Screening and no increase in PSA since his resection surgery).
Patient has severe pain that is likely to interfere with sleep (in the opinion of the investigator).
Patient has any concomitant documented progressive disease likely to interfere with the conduct of the study, particularly:
Patients that are taking prohibited medications according to Appendix 2 See also section 12.9.
Continuous use of benzodiazepines or other sedative hypnotics during the 2 weeks before Screening (see Section 12.9).
Patient has a history of chronic use (more than 3 months of continuous use) and abuse of benzodiazepines or other sedative hypnotics.
Use of any kind of melatonin/melatonin agonist during the 2 weeks before Screening (see Section 12.9).
Patient has known or suspected hypersensitivity to exogenous melatonin or melatonin receptor agonists.
Patient has clinically significant abnormal laboratory findings that have not been approved by the study safety officer.
Patient has persistent bradycardia (heart beat < 50 bpm) or tachycardia (heart beat > 100 bpm).
Patient has atrioventricular block (type II/Mobitz II and type III), congenital long QT syndrome, sinus node dysfunction or a marked prolongation of QTc interval (repeated demonstration in ECGs of QTc interval > 450 msec for males and > 470 msec for females using Fridericia's formula: QTc = QT/cube root of RR).
Patient has other serious diseases that could interfere with patient assessment, in the opinion of the investigator.
Patient has untreated B12 and/or folic acid deficiency.
Patient has participated in a clinical trial with any investigational agent within 3 months before Screening. Participants in any former monoclonal antibody clinical trial for AD are not eligible until 6 months after the last visit of the previous study. Patients who have received active vaccine for AD in the past will be excluded.
Patient with a body mass index (BMI) above 35 or below 18.
Lifestyle exclusions:
Patients unwilling to limit alcohol intake to less than 30 g of pure alcohol per day (see Appendix 1) and to abstain after 2000h throughout the study
Patients unwilling to be exposed to at least 2 hours of daylight each day
Divergence from the accepted level of study medication compliance (70% 130% of expected consumption) as verified at Visit 2 (see Section 12.10)
Patients consuming more than 7 cups of tea or coffee (or equivalent amount of caffeine [650 mg] in other caffeinated beverages) per day
Patients with an irregular lifestyle or life pattern (e.g., shift workers, patients likely to be jet lagged)
Patients with evidence of serious risk of suicide based on the Columbia-Suicide Severity Rating Scale, i.e., active suicidal ideation with some intent to act, with or without a specific plan (a positive response to Suicidal Ideation Items 4 or 5) in the 6 months prior to Screening, OR with evidence of suicidal behavior in the 2 years prior to Screening (a positive response to any of the 5 Suicidal Behavior Items {actual attempt, interrupted attempt, aborted attempt, preparatory acts, or behavior}), OR who, in the opinion of the investigator, present a serious risk of suicide.
Primary purpose
Allocation
Interventional model
Masking
225 participants in 2 patient groups, including a placebo group
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Central trial contact
Paula Ofek, Ph.D.; Tali Nir, DVM
Data sourced from clinicaltrials.gov
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