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Alzheimer DiseasePhase 1NCT03375697

A Study to Investigate Safety and Tolerability, Pharmacokinetics and Pharmacodynamics of JNJ-63733657 in Healthy Subjects and Subjects With Alzheimer's Disease

A Phase 1 study testing JNJ-63733657 in people with Alzheimer Disease, run by Janssen Research & Development, LLC at 7 sites in 4 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to assess the safety and tolerability of JNJ-63733657 following single ascending intravenous (IV) dose administration in healthy subjects (Part 1) and multiple ascending IV dose administrations in subjects with prodromal or mild Alzheimer's disease (AD) (Part 2). Read more about this study

Who is it for?
Ages 55 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Alzheimer Disease
What is being tested?
JNJ-63733657
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
72 participants
Where
7 sitesin 4 countries
Study dates
22 Dec 2017to 16 Dec 2019
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 55 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • General Inclusion Criteria:
  • Body mass index (BMI) between 18 and 35 kilogram per meter square (kg/m^2), inclusive (BMI = weight/height^2) and body weight greater than 40 kilogram (kg) but less than 110 kg at screening
  • Women must not be of childbearing potential
  • Specific Inclusion Criteria Part 2:
  • Each potential subject enrolled in Part 2 must satisfy all of the following specific criteria in addition to the general criteria to be enrolled in the study:
  • Clinical Dementia Rating Scale (CDR) global rating score of 0.5 or 1.0 at screening
  • Must have a reliable informant (example, relative, partner, friend)
  • Must have cerebrospinal fluid (CSF) finding consistent with Alzheimer's disease (AD) pathology

Who cannot join

  • General Exclusion Criteria
  • Any potential subject who meets any of the following criteria will be excluded from participating in the study:
  • History of or current liver or renal insufficiency; significant cardiac, vascular, pulmonary, gastrointestinal, endocrine, neurologic (including but not limited to neurodegenerative disease (excluding AD for Part 2) [example, Parkinson's disease], seizure disorders, transient ischemic attacks, etc.), hematologic (including coagulation disorders), rheumatologic, psychiatric, or metabolic disturbances, any inflammatory illness or any other illness that the Investigator considers should exclude the subject
  • Relevant history of or current neurological disease (other than prodromal AD or mild AD for Part 2), which in the opinion of the investigator may make interpretation of possible new neurological signs or symptoms difficult
  • History of human immunodeficiency virus (HIV) antibody positive, or tests positive for HIV at Screening (per screening evaluations)
  • History of hepatitis B surface antigen (HBsAg) or hepatitis C antibody (anti-Hepatitis C virus [HCV]) positive, or other clinically active liver disease, or tests positive for HBsAg or anti-HCV at screening (per screening evaluations)
Show all 9Show fewer
  • Specific Exclusion Criteria Part 1 - Mini-Mental State Examination (MMSE) score less than or equal to (<=) 27 at screening
  • Specific Exclusion Criteria Part 2
  • Evidence of brain disease, other than AD, that could explain the cognitive deficit (including, but not limited to, vascular encephalopathy or strokes, as imaged by cerebral Magnetic resonance imaging (MRI)

Trial locations and contacts

7 sites in 4 countries.

7 sites in 4 countries

Germany3 sites
  • Klinik für Neurodegenerative Erkrankungen und Gerontopsychiatrie

    Bonn, 53127

  • CTC North GmbH & Co. KG

    Hamburg, 20251

  • Universitätsklinikum des Saarlandes

    Homburg / Saar, 66421

Other trials in Germany

Spain2 sites
  • Hosp. Clinico San Carlos

    Madrid, 28040

  • Hosp. Univ. I Politecni La Fe

    Valencia, 46026

Other trials in Spain

Belgium1 site
  • Clinical Pharmacology Unit

    Merksem, 2170

Other trials in Belgium

Netherlands1 site
  • Centre for Human Drug Research

    Leiden, 2333 CL

Other trials in Netherlands

About this study

Official title: A 2-Part Randomized, Placebo-Controlled, Double-Blind, Single and Multiple Ascending Dose Study to Investigate Safety and Tolerability, Pharmacokinetics and Pharmacodynamics of JNJ-63733657 in Healthy Subjects and Subjects With Alzheimer's Disease

The purpose of this study is to assess the safety and tolerability of JNJ-63733657 following single ascending intravenous (IV) dose administration in healthy subjects (Part 1) and multiple ascending IV dose administrations in subjects with prodromal or mild Alzheimer's disease (AD) (Part 2).

Being tested
JNJ-63733657, Placebo
Medical subject headings
Alzheimer Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • JNJ-63733657Drug

    Subjects will receive single (Part 1) or multiple (Part 2) ascending dose levels of JNJ-63733657 intravenously.

  • PlaceboDrug

    Subjects will receive matching placebo intravenously.

Study groups in NCT03375697
Study groupRoleWhat they receive
SAD (Part 1): Healthy SubjectsExperimentalIn Part 1, single ascending intravenous (IV) doses of JNJ-63733657 or placebo will be administered to sequential cohorts (Cohorts 1 to 5) of healthy subjects on Day 1. The progression to the next (higher) dose level is dependent on acceptable safety and tolerability profile of JNJ-63733657 obtained after dose administration of the current dose level. Here, SAD indicates single ascending dose.
Receives: Drug: JNJ-63733657; Drug: Placebo
MAD (Part 2): Subjects With Alzheimer's Disease (AD)ExperimentalIn Part 2, multiple ascending IV doses of JNJ-63733657 or placebo will be evaluated at three dose levels in sequential cohorts in subjects with prodromal or mild AD; 3 doses will be administered over a period of 8 weeks (Day 1, Day 29, Day 57). The starting dose will be decided based on the data from Part 1. Escalations will be done based on safety and tolerability similar to Part 1. Doses will not exceed those tested in Part 1. Here, MAD indicates multiple ascending dose.
Receives: Drug: JNJ-63733657; Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Single Ascending Dose (SAD) (Part 1): Number of Subjects With Adverse Events as a Measure of Safety and Tolerability of JNJ-63733657

    An adverse event is any untoward medical event that occurs in a subject administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.

    Measured: Up to Day 106

  2. Multiple Ascending Dose (MAD) (Part 2): Number of Subjects With Adverse Events as a Measure of Safety and Tolerability of JNJ-63733657

    An adverse event is any untoward medical event that occurs in a subject administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.

    Measured: Up to Day 162

Secondary outcomes (12)
  1. SAD (Part 1) and MAD (Part 2): Maximum Observed Serum Concentration (Cmax) of JNJ-63733657

    The Cmax is the maximum observed serum concentration of drug JNJ-63733657.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  2. SAD (Part 1) and MAD (Part 2): Time to Reach Maximum Observed Serum Concentration (Tmax) of JNJ-63733657

    Tmax is defined as time to reach the maximum observed serum JNJ-63733657 concentration.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  3. SAD (Part 1) and MAD (Part 2): Area Under the Serum Concentration-time Curve From Time Zero to Time of the Last Observed Quantifiable Concentration (AUC [0-Last]) of JNJ-63733657

    AUC (0-last) is defined as area under the serum JNJ-63733657 concentration-time curve from time 0 to time of the last observed quantifiable concentration.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  4. SAD (Part 1) and MAD (Part 2): Area Under the Serum Concentration-Time Curve From Time Zero to Infinite Time (AUC [0-infinity]) of JNJ-63733657

    AUC (0-infinity) is defined as area under the serum JNJ-63733657 concentration-time curve from time 0 to infinite time.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  5. MAD (Part 2): Area Under the Serum JNJ-63733657 Concentration-time Curve During a Dosing Interval (t) (AUC tau)

    AUC tau is defined as area under the serum JNJ-63733657 concentration-time curve during a dosing interval (tau).

    Measured: Up to Day 85 (MAD)

  6. MAD (Part 2): Accumulation Ratio (R)

    R is obtained by dividing AUC of JNJ-63733657 at two different time points.

    Measured: Up to Day 162 (MAD)

  7. SAD (Part 1) and MAD (Part 2): Total Systemic Clearance (CL) of JNJ-63733657

    CL is a quantitative measure of the rate at which JNJ-63733657 is removed from the body. The total systemic clearance after intravenous dose is estimated by dividing the total administered dose by the plasma Area Under the Serum Concentration-Time Curve From Time Zero to Infinite Time (AUC[0-infinity]).

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  8. SAD (Part 1) and MAD (Part 2): Volume of Distribution at Steady-State (Vss) of JNJ-63733657

    Vss is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired blood concentration of a drug. Steady state Vss is the apparent volume of distribution at steady-state which is estimated by (D/AUC[0-infinity])*(AUMC[0-infinity])/AUC[0-infinity]) where D is the dose of study drug, AUMC(0-infinity) is the area under the first moment curve extrapolated to infinity and AUC(0-infinity) is the area under the serum concentration-time curve from time zero to infinite time.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  9. SAD (Part 1) and MAD (Part 2): Terminal Half-Life(t[1/2]) of JNJ-63733657

    t(1/2) is associated with the terminal slope (lambda [z]) of the semi-logarithmic drug concentration-time curve, calculated as 0.693/lambda(z).

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  10. SAD (Part 1) and MAD (Part 2): JNJ-63733657 Concentration in Cerebrospinal Fluid (CSF)

    CSF concentration assessment will be done to characterize the pharmacokinetics (PK) to estimate CSF concentration of JNJ-63733657.

    Measured: Up to Day 57 (SAD) and up to Day 148 (MAD)

  11. SAD (Part 1) and MAD (Part 2): Number of Subjects With Anti-JNJ-6373365 Antibodies as a Measure of Immunogenicity

    Number of subjects with Anti-JNJ-63733657 antibodies will be evaluated in serum samples and potential CSF samples.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

  12. SAD (Part 1) and MAD (Part 2): Percent Change From Baseline in Total, Free, and Bound tau Biomarker Fragments in CSF

    Percent change from baseline in total, free, and bound tau (phosphorylation site) biomarker fragments in CSF will be evaluated to assess the effect of JNJ-63733657.

    Measured: Up to Day 106 (SAD) and up to Day 162 (MAD)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Dec 2017
  2. Study start22 Dec 2017
  3. Primary completion16 Dec 2019
  4. Study completion16 Dec 2019

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
72 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03375697
Sponsor's protocol ID
CR108392
Other IDs
63733657EDI1001, 2017-003852-21, 2017
Status last verified
Apr 2025
First submitted
13 Dec 2017
Last updated
27 Apr 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Perez-Ruixo C, Li L, Galpern WR, Perez-Ruixo JJ. Mechanistic Population Pharmacokinetic-Pharmacodynamic Model of the Tau-Targeted Antibody Posdinemab in Healthy Participants and Participants with Alzheimer's Disease. Clin Pharmacol Ther. 2026 Apr;119(4):979-989. doi: 10.1002/cpt.70173. Epub 2025 Dec 22.

    PubMed 41431125
  • Galpern WR, Triana-Baltzer G, Li L, Van Kolen K, Timmers M, Haeverans K, Janssens L, Kolb H, Nandy P, Aida K, Shimizu H, Mercken M, Sun H. Phase 1 Studies of the Anti-Tau Monoclonal Antibody JNJ-63733657 in Healthy Participants and Participants with Alzheimer's Disease. J Prev Alzheimers Dis. 2024;11(6):1592-1603. doi: 10.14283/jpad.2024.163.

    PubMed 39559872

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing JNJ-63733657 in people with Alzheimer Disease, run by Janssen Research & Development, LLC at 7 sites in 4 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Apr 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 7 sites in Germany, Spain, Belgium, Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Single Ascending Dose (SAD) (Part 1): Number of Subjects With Adverse Events as a Measure of Safety and Tolerability of JNJ-63733657 (time frame: Up to Day 106). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03375697, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Apr 2025.

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