Proof of Mechanism Study of Senicapoc in Mild or Prodromal Alzheimer's Disease
Development of novel disease-modifying therapies for Alzheimer's disease (AD) remains of paramount importance. This study will be a Phase II randomized clinical trial testing Senicapoc in patients with mild or prodromal AD. This will be a small Proof of Mechanism study to prove biological activity and target engagement in humans with early AD. The investigators will study up to 55 patients over 52 weeks, with primary outcomes being Alzheimer's Disease Assessment Scale Cognitive Subscale (ADAS-Cog) scores and blood and cerebrospinal fluid (CSF) markers of neuroinflammation. This pilot study will provide an estimate of treatment effect size on cognitive trajectory, daily function, and brain atrophy.
• Age 55-85
• Fluent in either English or Spanish
• Willing to be randomized to active drug (10 mg Senicapoc) vs. placebo (3:1 ratio)
• Clinical Dementia Rating (CDR) global score of 1 or 0.5
• Education adjusted scores between 12-28 on the Montreal Cognitive Assessment (MoCA) at the Screening visit.
• A consensus clinical diagnosis of either amnestic Mild Cognitive Impairment (MCI) or mild AD dementia. Diagnoses are made by a comprehensive case conference review for all participants in the ADRC longitudinal cohort and all CADC referrals, resulting in a consensus diagnosis made according to current research criteria. For patients referred from other clinics, the case will be reviewed by a study physician and neuropsychologist and only patients who satisfy criteria for probable AD (McKhann et al 1984) or amnestic MCI (Petersen et al 2004) will be eligible for enrollment.
• Vision (with or without correction) of at least 20/50 for distant vision
• All participants will need a study partner informant who has at least 6 hours of contact per week with the participant. The study partners are used to help answer questions on the subject's behalf, since many of them will be impaired and may need assistance with providing accurate information. The study partners are not asked to provide any opinions or judgements about the subjects.
• For Females of childbearing potential: Must agree to practice a highly effective method of contraception throughout the study until completion of the Week 78 follow up visit. Highly effective methods of contraception are those that alone or in combination result in a failure rate of less than 1% per year when used correctly and consistently.