Study to Test Effects and Safety of RO7568282 in Early Symptomatic Alzheimer's Disease
TARBELA-AD
A Phase II, Randomized, Double-blind, Placebo-controlled, Multicenter Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of RO7568282 in Participants With Early Symptomatic Alzheimer's Disease
2 other identifiers
interventional
450
0 countries
N/A
Brief Summary
This study aims to compare the effects of RO7568282 versus a placebo in people in the early stages of Alzheimer's disease (AD).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Oct 2026
Typical duration for phase_2
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 20, 2026
CompletedFirst Posted
Study publicly available on registry
August 24, 2026
CompletedStudy Start
First participant enrolled
October 31, 2026
ExpectedPrimary Completion
Last participant's last visit for primary outcome
November 1, 2029
Study Completion
Last participant's last visit for all outcomes
November 1, 2029
August 24, 2026
July 1, 2026
3 years
August 20, 2026
August 20, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Change From Baseline to Week 72 in Clinical Dementia Rating, Sum of Boxes (CDR-SB)
From baseline up to Week 72
Secondary Outcomes (5)
Change From Baseline Through Week 72 in Alzheimer's Disease Assessment Scale-Cognition 13 (ADAS-Cog-13)
From baseline up to Week 72
Change From Baseline Through Week 72 in Alzheimer's Disease Cooperative Study - Activities of Daily Living Inventory (ADCS-ADL) Total Score and Instrumental Score
From baseline up to Week 72
Incidence of Adverse Events (AEs)
Up to approximately Week 76
Change From Baseline in Columbia-suicide Severity Rating Scale (C-SSRS)
From baseline up to Week 76
Plasma Concentrations of RO7568282 and its Metabolite[s]
Up to approximately Week 76
Study Arms (3)
RO7568282 High Dose
EXPERIMENTALParticipants will receive high dose of RO7568282.
RO7568282 Low Dose
EXPERIMENTALParticipants will receive low dose of RO7568282.
Placebo
PLACEBO COMPARATORParticipants will receive RO7568282 matching placebo.
Interventions
Eligibility Criteria
You may qualify if:
- Evidence of AD pathological process, as confirmed by either amyloid positron emission tomography (PET) scan or cerebrospinal fluid (CSF)
- Mild cognitive impairment (MCI) or mild dementia due to AD
- Able to swallow whole capsules
- Body mass index (BMI) within the range of 18-34 kilograms per square metre (kg/m²) (at screening)
- Availability of an appropriate study partner
You may not qualify if:
- Any evidence of a condition other than AD that may affect cognition
- Participants must not have unstable or clinically significant cardiovascular disease within the last year, chronic uncontrolled hypertension, or clinically significant electrocardiogram (ECG) abnormalities
- History or presence of clinically significant cerebrovascular disease
- Clinically significant cerebral abnormalities on magnetic resonance imaging (MRI)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Links
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Clinical Trials
Hoffmann-La Roche
Central Study Contacts
Reference Study ID Number: BP46554 https://forpatients.roche.com/ No attachments to email below.
CONTACT
Fastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry
CONTACT
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 20, 2026
First Posted
August 24, 2026
Study Start (Estimated)
October 31, 2026
Primary Completion (Estimated)
November 1, 2029
Study Completion (Estimated)
November 1, 2029
Last Updated
August 24, 2026
Record last verified: 2026-07
Data Sharing
- IPD Sharing
- Will share
For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data\_sharing