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A Study to Assess the Safety and Effects of ABBV-1758 Following Subcutaneous or Intravenous Injections in Participants With Alzheimer's Disease

16. september 2026 opdateret af: AbbVie

A Randomized, Double-Blind, Placebo-Controlled Study to Evaluate Safety, Efficacy, Pharmacokinetics, and Pharmacodynamics of ABBV-1758 in Participants With Alzheimer's Disease

Alzheimer's disease (AD) is a progressive, irreversible neurological disorder and is the most common cause of dementia in the elderly population. Clinical symptoms of the disease may begin with occasional forgetfulness such as misplacement of items, forgetting important dates or events, and may progress to noticeable memory loss, increased confusion and agitation, and eventually, loss of independence and non-responsiveness. The purpose of this study is to test how safe ABBV-1758 is, how well it works, how the body processes it and what effects it has on the body.

ABBV-1758 is an investigational drug being developed for the treatment of Alzheimer's disease. This study is conducted in 3 stages. Stage A is a multiple ascending dose study with a 1 in 5 chance (4:1 randomization) that participants are assigned to receive placebo. Stage B is a dose expansion phase, also using 4:1 randomization for ABBV-1758 or placebo. Stage C enrolls Japanese and Chinese participants with the same randomization scheme. Approximately 210 participants will be enrolled at about 55 sites in the United States, China, and Japan.

Participants will receive intravenous (IV) or subcutaneous (SC) doses of ABBV-1758 or placebo once every 4 weeks (Q4W) for 24 weeks and will be followed for additional 12 weeks in the Follow-up Period. Participants will have the option of participating in a 12-month, blinded Extension Period receiving ABBV-1758 or placebo based on amyloid PET results.

There may be higher treatment burden for participants in this trial compared to their standard of care due to study procedures. Participants will attend regular visits during the study at a hospital or clinic. The safety of the treatment will be checked by medical assessments, blood tests, and completing questionnaires.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

210

Fase

  • Fase 2
  • Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • California
      • Irvine, California, Forenede Stater, 92614
        • Rekruttering
        • Irvine Center for Clinical Research /ID# 277752
    • Colorado
      • Boulder, Colorado, Forenede Stater, 80301
        • Rekruttering
        • Alpine Clinical Research Center - Boulder - 47th Street /ID# 277856
    • Florida
      • Bradenton, Florida, Forenede Stater, 34207
        • Rekruttering
        • Key Clinical Research LLC /ID# 277800
        • Kontakt:
          • Site Coordinator
          • Telefonnummer: 941-241-5539
      • Clermont, Florida, Forenede Stater, 34711
        • Rekruttering
        • K2 Medical Research - Clermont /ID# 277859
      • Lady Lake, Florida, Forenede Stater, 32159
        • Rekruttering
        • K2 Medical Research - The Villages /ID# 278290
      • Stuart, Florida, Forenede Stater, 34997
        • Rekruttering
        • Alzheimer'S Research And Treatment Center - Stuart /ID# 278206
      • Wellington, Florida, Forenede Stater, 33414
        • Rekruttering
        • Alzheimer's Research And Treatment Center - Wellington /ID# 277749
        • Kontakt:
          • Site Coordinator
          • Telefonnummer: (561) 209-2400
      • Winter Park, Florida, Forenede Stater, 32789
        • Rekruttering
        • Conquest Research - Winter Park /ID# 277760
        • Kontakt:
          • Site Coordinator
          • Telefonnummer: 407-916-0060
    • Massachusetts
      • Watertown, Massachusetts, Forenede Stater, 02472
        • Rekruttering
        • Adams Clinical /ID# 277754
    • Tennessee
      • Cordova, Tennessee, Forenede Stater, 38018
        • Rekruttering
        • Neurology Clinic - Cordova /ID# 277790
    • Texas
      • Dallas, Texas, Forenede Stater, 75231
        • Rekruttering
        • Kerwin Medical Center /ID# 277788
        • Kontakt:
          • Site Coordinator
          • Telefonnummer: 972-433-9100
    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100053
        • Rekruttering
        • Xuanwu Hospital Capital Medical University /ID# 283310
    • Guangdong
      • Guangzhou, Guangdong, Kina, 510260
        • Rekruttering
        • The Second Affiliated Hospital of Guangzhou Medical University /ID# 284295

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Participants meeting all the following criteria for Alzheimer's disease (AD):

    • In regions where timely testing is feasible (e.g., results available within 4 weeks of Visit 1), plasma biomarker that is predictive of elevated brain amyloid at Screening for participants that do not have known elevated brain amyloid based on previous amyloid positron emission tomography (PET) results.
    • Participants with amyloid positron emission tomography PET scan results consistent with significant amyloid pathology (as determined by a Centiloid value of 50 or higher).
  • Participants must have a Mini-Mental State Examination (MMSE) score of 20 or higher at Screening.

Exclusion Criteria:

  • Participants with screening magnetic resonance imaging (MRI) that show evidence of another potential etiology for progressive dementia.
  • Participants who have any current serious conditions or illnesses that are not adequately controlled, or any conditions that, in the investigator's opinion, could interfere with the analyses in this study, including but not limited to psychiatric, neurologic (other than AD), cardiovascular, hepatic, renal, gastroenterological, respiratory, endocrinologic, immunologic, or hematologic, metabolic, pulmonary, ophthalmologic, dermatologic, and/or any history of abnormal laboratory results that are indicative of significant disease(s).
  • Participants who had prior exposure to ABBV-1758 or any history of exposure to anti-amyloid beta monoclonal antibody (mAb) treatment.
  • Participants with other significant pathological findings on brain MRI at screening, including but not limited to:

    • Evidence of vasogenic edema
    • 4 or more microhemorrhages (defined as 10 mm or less at the greatest diameter)
    • Any macrohemorrhage (defined as greater than 10 mm at the greatest diameter)
    • Any superficial siderosis
    • Severe white matter disease

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Sekventiel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Stage A-ABBV-1758 Dose A
Participants will receive ABBV-1758 dose A once every 4 weeks (Q4W).
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage A-ABBV-1758 Dose B
Participants will receive ABBV-1758 dose B Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage A-ABBV-1758 Dose C
Participants will receive ABBV-1758 dose C Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage A-ABBV-1758 Dose D
Participants will receive ABBV-1758 dose D Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage B- ABBV-1758 - Expanded Cohort 1
Participants will receive ABBV-1758 dose determined in Stage A Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage B- ABBV-1758- Expanded Cohort 2
Participants will receive ABBV-1758 dose determined in Stage A Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage C- ABBV-1758 - Japanese Cohort 1
Participants will receive ABBV-1758 dose determined in Stage A Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage C- ABBV-1758- Japanese Cohort 2
Participants will receive ABBV-1758 dose determined in Stage A Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Eksperimentel: Stage C- ABBV-1758-Chinese Cohort
Participants will receive ABBV-1758 dose determined in Stage A Q4W.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 Dose A
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 Dose B
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 Dose C
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 Dose D
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 - Expanded Cohort 1
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758- Expanded Cohort 2
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758 - Japanese Cohort 1
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758- Japanese Cohort 2
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)
Placebo komparator: Placebo for ABBV-1758- Chinese Cohort
Participants will receive Placebo for ABBV-1758.
Intravenous (IV) or Subcutaneous (SC)
Subcutaneous (SC)

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Percentage of Participants Experiencing Adverse Events (AEs)
Tidsramme: Up to approximately 40 weeks
An adverse event (AE) is defined as any untoward medical occurrence in a participant or clinical investigation participant administered a pharmaceutical product which does not necessarily have a causal relationship with the treatment. The investigator assesses the relationship of each event to the use of study drug.
Up to approximately 40 weeks
Percentage of Participants with Abnormal Change from Baseline in Clinical Laboratory Test Results
Tidsramme: Up to approximately 40 weeks
Number of participants with abnormal change in clinical laboratory test results like hematology will be assessed.
Up to approximately 40 weeks
Percentage of Participants With Amyloid-Related Imaging Abnormalities (ARIA)
Tidsramme: Up to approximately 40 weeks
Amyloid related imaging abnormalities represent a spectrum of magnetic resonance imaging findings primarily observed in participants undergoing treatment with anti-amyloid therapies.
Up to approximately 40 weeks
Percentage of Participants with Abnormal Change From Baseline in Vital Sign Measurements
Tidsramme: Up to approximately 40 weeks
Number of participants with abnormal change from baseline in vital sign measurements like systolic and diastolic blood pressure will be assessed.
Up to approximately 40 weeks
Percentage of Participants with Abnormal Change From Baseline in Electrocardiograms (ECGs) Parameters
Tidsramme: Up to approximately 40 weeks
12-lead resting ECGs will be recorded. Parameters include heart rate, PR interval, QT interval, QRS duration, and QT interval corrected using Fridericia's formula (QTcF).
Up to approximately 40 weeks
Percentage of Participants Experiencing Any Suicidal Ideation or Suicidal Behavior As Assessed by Columbia-Suicide Severity Rating Scale (C-SSRS)
Tidsramme: Up to approximately 40 weeks
The C-SSRS is a clinician-rated instrument that reports the severity of both suicidal ideation and behavior, with a higher score denoting more severe suicidal ideation and behavior.
Up to approximately 40 weeks
Stage A, B, and C: Change from Baseline in Brain Amyloid Load
Tidsramme: Up to approximately 28 Weeks
Measured by amyloid positron emission tomography (PET)
Up to approximately 28 Weeks
Stage A and C: Maximum Plasma Concentration (Cmax) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
Cmax of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Time to Cmax (Tmax) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
Tmax of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Trough Concentration measured at the end of a dosing interval at steady state (Ctrough) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
Ctrough of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Area under the Plasma Concentration-time Curve from Time Zero to the End of the Dosing Interval (AUCtau) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
AUCtau of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Average Serum Concentration at Steady-State (Cav,ss) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
Cav,ss of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Accumulation ratio for (AUCtau) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
AUCtau of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Total Body Clearance (CL) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
CL of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Apparent Clearance (CL/F) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
CL/F of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Volume of Distribution at Steady-State (Vss)
Tidsramme: Up to approximately 40 weeks
Vss of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Apparent Volume of Distribution during the Terminal Phase (Vz)
Tidsramme: Up to approximately 40 weeks
Vz of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Terminal Phase Elimination Rate Constant (β) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
β of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Terminal Phase Elimination Half-Life (t1/2) of ABBV-1758
Tidsramme: Up to approximately 40 weeks
Terminal phase elimination half-life of ABBV-1758
Up to approximately 40 weeks
Stage A and C: Effective Half-Life (T1/2,eff)
Tidsramme: Up to approximately 40 weeks
T1/2,eff of ABBV-1758
Up to approximately 40 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Studieleder: ABBVIE INC., AbbVie

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

15. maj 2026

Primær færdiggørelse (Anslået)

1. oktober 2030

Studieafslutning (Anslået)

1. oktober 2030

Datoer for studieregistrering

Først indsendt

15. maj 2026

Først indsendt, der opfyldte QC-kriterier

15. maj 2026

Først opslået (Faktiske)

20. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

18. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

16. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • M25-804

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

AbbVie is committed to responsible clinical trial data sharing. This includes access to anonymized, individual and trial-level data (analysis data sets), as well as other information.

IPD-delingstidsramme

For details on when studies are available for sharing, visit https://vivli.org/ourmember/abbvie/

IPD-delingsadgangskriterier

To learn more about the process, or to submit a request, visit the following link https://www.abbvieclinicaltrials.com/hcp/data-sharing/

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .