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Phase 2 Study of BIIB080 in Participants with MCI Due to AD or Mild AD Dementia

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Assess the Efficacy, Safety, and Tolerability of BIIB080 in Subjects with Mild Cognitive Impairment Due to Alzheimer's Disease or Mild Alzheimer's Disease Dementia

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2031220635
Enrollment
735
Registered
2023-02-12
Start date
2023-07-11
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Alzheimer's Disease Dementia

Interventions

Research Name: BIIB080 (previously known as ISIS 814907) Generic Name: Not applicable Participants will receive study treatment via IT injection every 12 weeks, starting on Study Day 1. Participants

Sponsors

Matsuda Naoto
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Must meet all the clinical staging criteria for MCI due to AD (Stage 3) or mild AD dementia (Stage 4) according to the NIA-AA and must have the following at Screening Visit 1: - RBANS Delayed Memory Index score of = 0.5. 2. Evidence of amyloid pathology as measured by PET or CSF sampling.

Exclusion criteria

Exclusion criteria: 1. Known allergy to BIIB080 or a history of hypersensitivity to any of the inactive ingredients in the drug product . 2. Previous participation in this study or previous studies with BIIB080. 3. Use of non-disease-modifying AD medications (including but not limited to donepezil, rivastigmine, galantamine, and memantine) at doses that have not been stable for at least 8 weeks prior to Screening Visit 1 and during the screening period up to Study Day 1. 4. Prior participation in any active or passive immunotherapy study targeting amyloid beta, unless documentation of receipt of placebo is available. 5. Prior participation in any passive immunotherapy study targeting tau, unless the last administration occurred 6 months or 5 half-lives, whichever is sooner, prior to Screening or documentation of receipt of placebo is available. 6. Participation in any study involving an investigational treatment targeting tau that is not an immunotherapy, unless documentation of receipt of placebo is available. 7. Participation in a study of any other agent(s) [including gene therapy] not included in exclusion criteria 4, 5, and 6 with a purported disease-modifying effect in AD, unless documentation of receipt of placebo is available. 8. Current use or previous use of medications with a purported disease-modifying effect in AD, outside of investigational studies. 9. Any vaccination given within 10 days prior to Day -1. COVID-19 vaccinations using RNA or DNA technology are allowed during the study, as well as other types of immunization/vaccination/booster, except during the 10 days before and after clinic visits. 10. Contraindications to having a brain MRI (e.g., MRI-incompatible pacemaker; MRI incompatible aneurysm clips, artificial heart valves, or other metal foreign body; claustrophobia that cannot be medically managed). If the MRI compatibility of implanted devices is unknown, the participant must be excluded from the study. 11. Current enrollment or a plan to enroll in any interventional clinical study in which an investigational treatment or approved therapy for investigational use is administered within 52 weeks prior to the Baseline Visit.

Design outcomes

Primary

MeasureTime frame
Dose-response in change from Baseline to Week 76 on the CDR-SB

Secondary

MeasureTime frame
- Change from Baseline to Week 76 on the CDR-SB - Change from Baseline to Week 76 on the following: - ADCS-ADL-MCI - ADAS-Cog 13 - MMSE - Modified iADRS - ADCOMS - Incidence of treatment-emergent AEs and SAEs

Countries

Australia, Belgium, Canada, Czech Republic, Denmark, Finland, France, Germany, Italy, Japan, Netherlands, Poland, Spain, Sweden, Switzerland, UK, USA

Contacts

Public ContactBiogen Japan Medical Information

Biogen Japan Ltd.

japan-medinfo@biogen.com+81-120-560-086

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026