Last reviewed · How we verify
An Open-label, Non-randomized Study to Evaluate the Efficacy and Safety of BAY94-9172 (ZK 6013443) Positron Emission Tomography (PET) Imaging for Detection/Exclusion of Cerebral Beta-amyloid When Compared to Postmortem Histopathology
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
Details
| Lead sponsor | Life Molecular Imaging SA |
|---|---|
| Phase | Phase 3 |
| Status | COMPLETED |
| Enrolment | 218 |
| Start date | 2009-11 |
| Completion | 2013-12 |
Conditions
- Alzheimer Disease
Interventions
- Florbetaben (BAY94-9172)
Primary outcomes
- 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 — 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".
Countries
United States, Australia, France, Germany, Japan