Aged 50–99 years |
Clinical diagnosis of early Alzheimer’s disease (Clinical Dementia Rating (CDR) = 0.5, Mini-Mental State Exam (MMSE) = 24 – 30) |
If using drugs to treat symptoms related to Alzheimer’s disease, doses must be stable for at least eight weeks prior to screening visit 1 |
Labs: |
Adequate blood cell counts (white blood cells: 4,000 – 11,000 cells/mcL; absolute neutrophil count: 1,800–8,700 cells/mcL; platelets: 120 – 500 K/µL; hemoglobin 12.0 – 17.5 grams/dL) |
LFTs within 2x normal value |
CrCl ≥ 50 mL/min |
Cholesterol (≤ 260 mg/dl), triglycerides ≤ 400 mg/dl) |
Glucose control (HbA1c ≤ 8%) |
Prothrombin time/partial thromboplastin time/international normalized ratio (PT/PTT/INR) within normal limits |
Body mass index (BMI) within 16 – 35 kg/m2
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Reliable informant or caregiver |
EXCLUSION CRITERIA
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Medical or neurologic condition other than Alzheimer’s disease that may contribute to cognitive impairment |
Clinically significant unstable psychiatric illness in the past six months |
Hearing, vision, or motor deficits that interfere with participation |
Alcohol or drug abuse/dependence in the past six months |
Stroke, transient ischemic attack, or unexplained loss of consciousness in the past six months |
Unstable angina, myocardial infarction, advanced chronic heart failure, or clinically significant conduction abnormalities within the past six months |
Relevant brain hemorrhage, bleeding disorder and cerebrovascular abnormalities |
Diagnosis of HIV infection or AIDS (CD4 count < 200), HIV/HBV co-infection, HBV or human T-cell leukemia virus infection |
History of impaired renal or liver function |
Current use of memantine or sorbitol-containing products (participants who are taken off memantine may be eligible for enrollment following a one-month washout period) |
HIV, HBV, or current/previous use of NRTIs/non-NRTIs |
Poorly controlled blood pressure (systolic > 160, diastolic > 90 mmHg) |
Uncontrolled diabetes (HbA1c > 8%, or current use of insulin) |
Significant systematic illness or infection in the past 30 days |
Pregnant women |
Space-occupying lesion in brain that contraindicates LP |
Imaging within one year prior to enrollment that identifies any exclusionary lesions |