Allopregnanolone Regenerative Therapeutic for Mild Alzheimer's Disease

This is a proof-of-concept phase 2 clinical trial to investigate the long-term safety and efficacy of Allo to function as a regenerative therapeutic to restore structural integrity and cognitive function of the brain in participants with mild Alzheimer's disease (AD) dementia. Study participants will be male and female, diagnosed with probable AD, Mini-Mental State Exam (MMSE) 20 to 26, ages 55 to 80 years old. After a 2-4-week screening period, participants will be randomized to 4 mg Allo (administered intravenously over 30 minutes, once per week, in clinic) or matching placebo, 1:1 allocation, for a period of 6 months. After 6 months, all participants in the placebo group will be crossed-over to receive Allo for the remainder of the study (3 month open-label phase). Brain imaging to evaluate the primary endpoint will be conducted at baseline, 3 and 6 months.