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Badanie fazy III Florbetabenu (BAY94-9172) Obrazowanie PET w celu wykrycia/wykluczenia mózgowego β-amyloidu w porównaniu z badaniem histopatologicznym

22 października 2026 zaktualizowane przez: Lantheus Biosciences Ltd.

Otwarte, nierandomizowane badanie mające na celu ocenę skuteczności i bezpieczeństwa pozytonowej tomografii emisyjnej (PET) BAY94-9172 (ZK 6013443) w celu wykrycia/wykluczenia mózgowego beta-amyloidu w porównaniu z badaniem histopatologicznym pośmiertnym

To determine the sensitivity and specificity of the visual assessment of tracer uptake in the Florbetaben PET images compared to histological verification of the presence or absence of cerebral β-amyloid in the respective histopathologic post mortem specimens as the standard of truth

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

218

Faza

  • Faza 3

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

    • Victoria
      • Heidelberg, Victoria, Australia, 3084
      • Lille, Francja, 59037
      • Strasbourg, Francja, 67091
    • Aichi-ken
      • Toyohashi, Aichi-ken, Japonia, 440-0045
      • Toyohashi, Aichi-ken, Japonia, 441-8021
      • Toyohashi, Aichi-ken, Japonia, 441-8124
    • Gunma
      • Isesaki, Gunma, Japonia, 372-0006
    • Shizuoka
      • Hamamatsu, Shizuoka, Japonia, 432-8580
    • Tokyo
      • tabashi City, Tokyo, Japonia, 173-0015
    • North Rhine-Westphalia
      • Jülich, North Rhine-Westphalia, Niemcy, 52425
    • Saxony
      • Leipzig, Saxony, Niemcy, 04103
    • Arizona
      • Sun City, Arizona, Stany Zjednoczone, 85351
    • California
      • Stanford, California, Stany Zjednoczone, 94305
    • Florida
      • Tampa, Florida, Stany Zjednoczone, 33616
    • New Jersey
      • Teaneck, New Jersey, Stany Zjednoczone, 07666
    • Pennsylvania
      • Philadelphia, Pennsylvania, Stany Zjednoczone, 19104
    • Texas
      • Dallas, Texas, Stany Zjednoczone, 75390
      • Houston, Texas, Stany Zjednoczone, 77030
      • San Antonio, Texas, Stany Zjednoczone, 78229

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

21 lat i starsze (Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Nie

Płeć kwalifikująca się do nauki

Wszystko

Opis

Inclusion Criteria:

  • Females, no child-bearing potential or negative urine pregnancy test on day of BAY94-9172 injection
  • Exhibits visual, auditory, and communicative capabilities adequate to provide informed consent or assent and comply with study procedures
  • Is willing and able to lie down in magnetic resonance imaging (MRI) and positron emission tomography (PET) scanners
  • Is willing to donate their brain for postmortem examination in case of death
  • The subject, or the subject and/or legally acceptable representative will be compliant and have a high probability of completing the study in the opinion of the investigator
  • Has been fully informed about the study, including provisions of the Health Insurance Portability and Accountability Act (HIPAA), as applicable, and informed consent or assent has been signed and dated (with time) by the subject and/or the subject's legally acceptable representative
  • The subjects who have participated in a previous florbetaben study e.g. study 311741 may be included in the present study. The MRI- and florbetaben PET scan do not need to be repeated if both scans were performed within twelve months prior to inclusion.

Exclusion Criteria:

  • Has severe cerebral macrovascular (ie, multi-stroke) disease or brain tumor (metastasis/brain cancer) as verified by MRI
  • Has any contraindication to magnetic resonance imaging (MRI) examination, eg, metal implants or phobia as determined by the onsite radiologist performing the scan
  • Has been previously enrolled in this study or participated in a clinical study involving an investigational pharmaceutical product within 30 days prior to screening and/or was administered a radiopharmaceutical within 10 radioactive half-lives prior to study drug administration in this study
  • Has severe cardio-vascular instability requiring intensive care surveillance and/or therapeutic intervention (i.e. catecholamine infusion)

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Diagnostyczny
  • Przydział: Nie dotyczy
  • Model interwencyjny: Zadanie dla jednej grupy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Florbetaben (BAY94-9172)

Single intravenous injection 1-5ml, 300 MBq (+/- 20%)

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Sensitivity and Specificity of the Majority Read of Visual Assessment of Tracer Uptake Compared to Histological Verification of the Presence or Absence of Cerebral Beta-amyloid in Postmortem Specimens
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

The sensitivity/specificity of the visual assessment were calculated based on the majority read assessment of regional tracer uptake. This result was derived from assessments by 3 independent readers for brain regions of a subject where a Standard of Truth (SOT) was available. The SOT for this analysis was a centralized histopathological determination of β-amyloid presence/absence based on both Bielschowsky silver and immunohistochemical staining. Based on the PET images, a brain region was classified as "normal" or "abnormal" depending on the presence or absence of regional tracer uptake in the respective region. "Normal" therefore meant absence of β-amyloid and "abnormal" presence of β-amyloid. Sensitivity was defined as the percentage of abnormal brain regions from all regions where an SOT was available and the SOT was "β-amyloid present". Specificity was defined as the percentage of normal brain regions from all regions where an SOT was available and was "β-amyloid not present".

90-110 minutes post injection (PET image acquisition)

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Sensitivity and Specificity of the Majority Read "Whole Brain" Visual Assessment in Detecting/Excluding Cerebral Neuritic β-amyloid Plaques Compared With the Histopathological Verification With Bielschowsky Silver Staining (SOT 1).
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

Sensitivity and specificity of the whole brain visual assessment were calculated. Any brain with a region classified as abnormal from PET imaging was to be classified as abnormal for the "whole brain" assessment. This result was derived from assessments by 3 independent readers for a subject where a Standard of Truth (SOT) was available. The SOT for this analysis was based on a centralized histopathological assessment of the presence/absence of β-amyloid based on Bielschowsky silver staining (SOT 1).

The sensitivity was defined as the proportion of brains classified as abnormal from all brains where this SOT was available and was "β-amyloid present". The specificity was defined as the proportion of brains classified as normal from all brains where this SOT was available and was "β-amyloid not present".

90-110 minutes post injection (PET image acquisition)
Sensitivity and Specificity of the Majority Read "Whole Brain" Visual Assessment in Detecting/Excluding Cerebral Neuritic β-amyloid Plaques Compared With Histopathological Verification With Bielschowsky Silver Staining and Immunohistochemistry (SOT 2).
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

Sensitivity and specificity of the whole brain visual assessment were calculated. Any brain with a region classified as abnormal from PET imaging was to be classified as abnormal for the "whole brain" assessment. This result was derived from assessments by 3 independent readers for a subject where a Standard of Truth (SOT) was available. The SOT for this analysis was based on a centralized histopathological assessment of the presence/absence of β-amyloid based on Bielschowsky silver staining and immunohistochemistry (SOT 2).

The sensitivity was defined as the proportion of brains classified as abnormal from all brains where this SOT was available and was "β-amyloid present". The specificity was defined as the proportion of brains classified as normal from all brains where this SOT was available and was "β-amyloid not present".

90-110 minutes post injection (PET image acquisition)
Sensitivity and Specificity of the Majority Read "Whole Brain" Visual Assessment in Detecting/Excluding Cerebral Neuritic β-amyloid Plaques Compared With the Histopathological Verification According to CERAD Criteria (SOT 3).
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

Sensitivity and specificity of the whole brain visual assessment were calculated. Any brain with a region classified as abnormal from PET imaging was to be classified as abnormal for the "whole brain" assessment. This result was derived from assessments by 3 independent readers for a subject where a Standard of Truth (SOT) was available. The SOT for this analysis was based on a histopathological assessment of the presence/absence of β-amyloid according to CERAD Criteria (SOT 3).

The sensitivity was defined as the proportion of brains classified as abnormal from all brains where this SOT was available and was "β-amyloid present". The specificity was defined as the proportion of brains classified as normal from all brains where this SOT was available and was "β-amyloid not present".

90-110 minutes post injection (PET image acquisition)
Sensitivity and Specificity of the Subject Level Composite SUVR Calculated Based on Pathology Results.
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

Sensitivity and specificity of subject level composite Standard Uptake Value Ratios (SUVR) by SOT for subjects with available brain tissue and 10 healthy volunteers. The SUVR were determined as a quantitative measure of tracer uptake. The SUV is defined as the ratio of the tissue radioactivity concentration c (in MBq/kg) at time point t, and the injected activity (in MBq), extrapolated to the same time (t) divided by the body weight (in kg). SUV numbers were then used to derive SUV ratios (SUVR) using the SUV from the cerebellar cortex as reference. SOTs comprised Bielschowsky silver staining (SOT 1), Bielschowsky silver staining with immunohistochemistry (SOT 2) and neuropathology assessment according to CERAD (SOT 3). SUVR analysis was performed for baseline and available follow-up scans. The optimal threshold for the distinction between β-amyloid present yes/no according to the respective SOT was derived based on ROC curve analyses and used to calculate sensitivity and specificity.

90-110 minutes post injection (PET image acquisition)
Subject Level Composite SUVRs by SOT for Baseline and Available Follow-Up Scans
Ramy czasowe: 90-110 minutes post injection (PET image acquisition)

Subject level composite SUVRs (calculated as mean of SUVRs from the frontal, parietal, lateral temporal, anterior and posterior cingulate, and occipital cortices) by SOT are reported for subjects with available brain tissue. The initial drug administration group includes additionally 10 healthy controls who were considered as ß-amyloid negative. The SOTs for deceased subjects were based on Bielschowsky silver staining (SOT 1), Bielschowsky silver staining in combination with immunohistochemistry (SOT 2) and neuropathology assessment according to CERAD (SOT 3). SUVR analysis was performed for baseline and available follow-up scans.

90-110 minutes post injection (PET image acquisition)

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Śledczy

  • Dyrektor Studium: Andrew Stephens, MD, PhD, Lantheus Germany GmbH

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów

1 listopada 2009

Zakończenie podstawowe (Rzeczywisty)

1 września 2011

Ukończenie studiów (Rzeczywisty)

1 grudnia 2013

Daty rejestracji na studia

Pierwszy przesłany

16 listopada 2009

Pierwszy przesłany, który spełnia kryteria kontroli jakości

25 listopada 2009

Pierwszy wysłany (Szacowany)

26 listopada 2009

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

10 listopada 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

22 października 2026

Ostatnia weryfikacja

1 października 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • 14595
  • 2009-012569-79 (Numer EudraCT)
  • 2009 (Grant/umowa NIH USA)

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .