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Trontinemab

Phase 3

Alzheimers Disease | Monoclonal antibody | Neurology |Roche Holding AG|Trials Updated: Oct 13, 2026

Trontinemab development status

Highest phase Phase 3
Registered trials 5 across 1 sponsor since Jul 2019

Trontinemab target and mechanism

Target class-Mab (Antibody)
ModalityMonoclonal antibody

Also known as RO7126209, RG6102

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials5
Total Enrollment4,038

FDA Designations

No designations recorded

Trontinemab clinical trials

Trontinemab · 5 trials · 2 indications

Phase 3 3Phase 1 2
NCT07717411A Study of Trontinemab in Cognitively Unimpaired Individuals at Risk for Progression to Symptomatic Alzheimer's DiseaseAlzheimer's Disease
RECRUITING1,600 Analytics
NCT07170150A Clinical Trial of Trontinemab in Participants With Early Symptomatic Alzheimer's DiseaseAlzheimers Disease
ACTIVE NOT_RECRUITING1,060 Analytics
NCT07169578A Study of Trontinemab in Participants With Early Symptomatic Alzheimer's DiseaseAlzheimers Disease
ACTIVE NOT_RECRUITING1,101 Analytics
PHASE3RECRUITING
A Study of Trontinemab in Cognitively Unimpaired Individuals at Risk for Progression to Symptomatic Alzheimer's Disease
Alzheimer's DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Clinical Trial of Trontinemab in Participants With Early Symptomatic Alzheimer's Disease
Alzheimers DiseaseUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Study of Trontinemab in Participants With Early Symptomatic Alzheimer's Disease
Alzheimers DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Time to Progression, defined as confirmed Clinical Dementia Rating - Global Score (CDR-GS) > 0
Baseline up to approximately 6 years
Change From Baseline to Week 72 in Clinical Dementia Rating, Sum of Boxes (CDR-SB)
Baseline - Week 72
Part 1, 2, 3, and 4: Percentage of Participants With Adverse Events (AEs)
Part 1 and 2: Up to approximately 56 weeks; Part 3: Up to approximately 52 weeks; Part 4: Up to approximately 233 weeks
Part 3: Change From Baseline in Brain Amyloid Load as Measured by Amyloid Positron Emission Tomography (PET) Scan
Up to approximately 24 weeks
Percentage of Participants With Adverse Events (AEs)
Up to approximately 9 weeks

An Adverse Event (AE) is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An Adverse Event can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as Adverse Events.

Secondary Endpoints

Change from Baseline through Week 216 in Clinical Dementia Rating, Sum of Boxes (CDR-SB)
Baseline through Week 216
Change from Baseline through Week 216 in Free and Cued Selective Reminding Test (FCSRT) total recall score
Baseline through Week 216
Change from Baseline through Week 216 in Digit Symbol Substitution Test (DSST) coding score
Baseline through Week 216
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TrontinemabEXPERIMENTALParticipants will receive intravenous (IV) trontinemab.
PlaceboPLACEBO_COMPARATORParticipants will receive IV placebo.
Part 1 (Dose Finding) Cohort 1: Dose Level 1 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 1 once every 4 weeks (Q4W) for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 1: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 1 Q4W for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 2: Dose Level 2 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 2, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 2: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 2, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 3: Dose Level 3 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 3, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 3: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 3, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 4: Dose Level 4 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 4, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 4: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 4, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 1 (Dose Finding) Cohort 5: Dose Level 5 of RO7126209EXPERIMENTALParticipants will receive a total of 2 doses of RO7126209 at dose level 5 Q4W, for 28 weeks followed by an 8-week safety follow-up period.
Part 1 (Dose Finding) Cohort 5: PlaceboPLACEBO_COMPARATORParticipants will receive a total of 2 doses of matching placebo to dose level 5 Q4W, for 28 weeks followed by an 8-week safety follow-up period.
Part 2 (Expansion) Cohort 1: Dose Level 3 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 3, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 2 (Expansion) Cohort 1: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 3, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 2 (Expansion) Cohort 2: Dose Level 4 of RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 at dose level 4, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 2 (Expansion) Cohort 2: PlaceboPLACEBO_COMPARATORParticipants will receive matching placebo to dose level 4, Q4W, for 28 weeks followed by a 28-week safety follow-up period.
Part 2 (Expansion) Cohort 3: Dose Level 5 of RO7126209EXPERIMENTALParticipants will receive a total of 2 doses of RO7126209 at dose level 5, Q4W, for 28 weeks followed by an 8-week safety follow-up period.
Part 2 (Expansion) Cohort 3: PlaceboPLACEBO_COMPARATORParticipants will receive a total of 2 doses of matching placebo to dose level 5, Q4W, for 28 weeks followed by an 8-week safety follow-up period.
Part 3 (Dose/Frequency/Pharmacodynamic (PD) Relationship): Dose Level 1: RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 in an open-label treatment period at dose level 1, Q4W, for 24 weeks followed by a 28-week safety follow-up period.
Part 3 Dose/Frequency/PD Relationship: Dose Level 2: RO7126209EXPERIMENTALParticipants will receive multiple doses of RO7126209 in an open-label treatment period at dose level 2, Q12W, for 24 weeks followed by a 28-week safety follow-up period.
Part 4: Open Label Extension (OLE)EXPERIMENTALParticipants who completed Part 1, 2, or 3 will receive RO7126209 for a maximum of 205 weeks.
RO7126209 (0.1 mg/kg)EXPERIMENTALHealthy volunteers will be administered a single intravenous dose of RO7126209 (0.1 mg/kg).
RO7126209 (0.4 mg/kg)EXPERIMENTALHealthy volunteers will be administered a single intravenous dose of RO7126209 (0.4 mg/kg).
RO7126209 (1.2 mg/kg)EXPERIMENTALHealthy volunteers will be administered a single intravenous dose of RO7126209 (1.2 mg/kg).
RO7126209 (3.6 mg/kg)EXPERIMENTALHealthy volunteers will be administered a single intravenous dose of RO7126209 (3.6 mg/kg).
RO7126209 (7.2 mg/kg)EXPERIMENTALHealthy volunteers will be administered a single intravenous dose of RO7126209 (7.2 mg/kg).

Interventions

NameTypeDescription
TrontinemabDRUGParticipants will receive IV trontinemab.
PlaceboDRUGParticipants will receive IV placebo.
RO7126209DRUGRO7126209 will be administered intravenously as specified in each treatment arm.
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Eligibility Criteria

Age Range55 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites34

Inclusion Criteria: * Body weight of 150 kg or less * Willingness and ability to complete all aspects of the study for the duration of the study * Adequate visual and auditory acuity, in the investigator's judgment, sufficient to perform the neuropsychological testing (eyewear and hearing aids are ...

Countries:United StatesArgentinaAustraliaCanadaChinaTaiwanUnited KingdomBrazilDenmarkFranceGermanyItalyJapanNetherlandsPolandSouth KoreaSpainSwitzerlandChile
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Recent Changes (Last 90 Days)

LOWOct 13, 2026NCT07717411lastUpdatePostDate: changed
LOWOct 13, 2026NCT07717411lastUpdatePostDate: changed
LOWOct 13, 2026NCT07717411lastUpdatePostDate: changed
MEDIUMSep 25, 2026NCT07170150Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMSep 25, 2026NCT07169578Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMSep 25, 2026NCT07170150Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMSep 25, 2026NCT07169578Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWSep 15, 2026NCT04639050lastUpdatePostDate: changed
LOWSep 15, 2026NCT04639050lastUpdatePostDate: changed
LOWSep 15, 2026NCT04639050lastUpdatePostDate: changed
LOWSep 10, 2026NCT07717411Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 10, 2026NCT07717411Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 6, 2026NCT07170150lastUpdatePostDate: changed
LOWAug 6, 2026NCT07169578lastUpdatePostDate: changed
LOWAug 6, 2026NCT07170150lastUpdatePostDate: changed
LOWAug 6, 2026NCT07169578lastUpdatePostDate: changed

Frequently asked questions about Trontinemab

What is Trontinemab used for?

Trontinemab is an investigational monoclonal antibody being developed for Alzheimer's disease. It is being studied in early symptomatic Alzheimer's disease and in cognitively unimpaired individuals at risk of progression to symptomatic Alzheimer's disease. It is not approved for any use and remains in clinical development.

What does Trontinemab target?

Trontinemab is a monoclonal antibody, a targeted biologic designed to bind a specific molecular target. It is being developed for Alzheimer's disease, and its antibody format allows selective engagement of that target. The clinical program evaluates its safety, tolerability, pharmacokinetics, and pharmacodynamics in participants with Alzheimer's disease.

Who is developing Trontinemab?

Trontinemab is being developed by Roche Holding AG, which trades under the ticker RHHBY. Roche is running the clinical program, including Phase 3 studies in early symptomatic Alzheimer's disease and in cognitively unimpaired individuals at risk of progression to symptomatic Alzheimer's disease.

What phase is Trontinemab in?

Trontinemab is in Phase 3 clinical development for Alzheimer's disease. It has not been approved by the FDA or any other regulatory agency and is considered investigational. The Phase 3 program includes randomized, double-blind, placebo-controlled trials, and a Phase 1 multiple ascending dose study has also been conducted.

What clinical trials is Trontinemab in?

Trontinemab is being studied in several clinical trials. Phase 3 studies include NCT07717411 in cognitively unimpaired individuals at risk of progression to symptomatic Alzheimer's disease, plus NCT07170150 and NCT07169578 in early symptomatic Alzheimer's disease. The Phase 1 Brainshuttle AD study is NCT04639050. These trials together have enrolled about 4,038 participants.

Is Trontinemab the same as RO7126209?

Yes, Trontinemab is also known as RO7126209. RO7126209 is the internal Roche development code used in earlier studies, including the Phase 1 Brainshuttle AD trial NCT04639050. Both names refer to the same investigational monoclonal antibody being developed by Roche for Alzheimer's disease.