Overview
The purpose of this study is to evaluate the safety, tolerability, pharmacodynamics (PD) and pharmacokinetics (PK) of a single dose and multiple doses of ALN-APP administered by intrathecal (IT) injection in adult patients with early-onset Alzheimer's Disease (EOAD). Maximum treatment duration for Part A: single dose. Maximum treatment duration for Part B: 12 months.
Eligibility
Inclusion Criteria:
- Has mild cognitive impairment or mild dementia due to EOAD
- Has Clinical Dementia Rating (CDR) global score 0.5 or 1.0 and Mini Mental State Examination (MMSE) >20
Exclusion Criteria:
- Has Non-Alzheimer's disease dementia
- Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) >2×upper limit of normal (ULN)
- Has estimated glomerular filtration rate (eGFR) <45 mL/min/1.73m^2 at Screening
- Has recently received an investigational agent
- Has recent treatment with amyloid-targeting antibody
Note: other protocol defined inclusion / exclusion criteria apply