A Phase 2 Trial of ALN-APP in Patients With Cerebral Amyloid Angiopathy

Trial statusRecruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexAll
Age30+
SponsorAlnylam Pharmaceuticals

About this trial

The purpose of the study is to evaluate the effect of ALN-APP on measures of CAA disease progression and to characterize the safety, tolerability, and pharmacodynamics (PD) of ALN-APP in adult patients with sporadic CAA (sCAA) and Dutch-type CAA (D-CAA). The study will be conducted over 2 periods: a 24-month double-blind treatment period and an optional 18-month open-label extension (OLE) period. The estimated duration of study participation, inclusive of screening, treatment, and additional safety follow-up, is up to 50 months.

Eligibility criteria

Qualifiers

Is 50 years or older

Has probable CAA per the Boston Criteria Version 2.0

Is 30 years or older

Has known E693Q amyloid precursor protein (APP) gene mutation for Dutch-type CAA

Disqualifiers

Moderate or severe stage Alzheimer's disease (AD) or significant cognitive impairment (CI)

Has a history of previous clinical intracerebral hemorrhage (ICH) with onset less than 90 days prior to anticipated randomization in the study

Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) >3×upper limit of normal (ULN) at Screening

Has estimated glomerular filtration rate (eGFR) <30 mL/min/1.73m² at Screening

Trial design

Treatments tested in this trial

  • Placebo
  • ALN-APP

Treatment groups

200 Participants
are divided into 2 treatment groups

Sponsors and collaborators