A PHASE I RANDOMIZED DOUBLE-BLIND PLACEBO-CONTROLLED SINGLE-CENTER STUDY OF SAFETY AND EFFECTIVENESS OF INNATE IMMUNITY STIMULATION VIA TLR9 IN MILD COGNITIVE IMPAIRMENT OR EARLY AD

Brief description of study

This single-center, double-blind, placebo-controlled study will recruit in total 39 participants with either Mild Cognitive Impairment due to Alzheimer’s disease (MCI) or Mild Alzheimer’s disease dementia (mild AD). There will be 3 Dose levels. An initial cohort of 13 subjects will be randomized to a Dose level 1 (0.1 mg/kg vs. placebo) lasting 8 weeks. An additional 13 subjects will be recruited and randomized into Dose level 2 (0.25 mg/kg vs. placebo) for 8 weeks and 13 subjects for the last Dose level 3 (0.5 mg/kg vs. placebo) for 8 weeks. Primary Objectives Evaluate the safety and tolerability of 3 escalating dose levels of CpG 1018 (dose level 1: 0.1 mg/kg vs. placebo; dose level 2: 0.25 mg/kg vs. placebo; dose level 3: 0.5 mg/kg vs. placebo) as 3 subcutaneous (s.c.) injections in patients with MCI or mild AD. Secondary Objectives Key secondary objectives: • To evaluate drug effect on immunostimulatory responses • To evaluate drug effect on disease progression An independent unblinded Data Safety Monitoring Board (DSMB) will convene at regular intervals to monitor the overall safety of the study and to make recommendations to the PI related to study safety as appropriate.


Clinical Study Identifier: s20-00267
ClinicalTrials.gov Identifier: NCT05606341
Principal Investigator: Arjun V. Masurkar.


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