- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT01550549
Evaluation of Web-based Training to Educate Physicians in the Methods of Interpreting Florbetapir-PET Scans
Descripción general del estudio
Estado
Intervención / Tratamiento
Descripción detallada
Avid has previously developed a florbetapir-PET scan binary read methodology and training program, which was successfully applied in studies 18F-AV-45-A08(NCT01565369), 18F-AV-45-A09(NCT01565382) and 18F-AV-45-A16(NCT01447719). In these previous studies, training was conducted in-person. Study 18F-AV-45-PT01 will evaluate an automated version of this training program suitable for web-based distribution. Nuclear medicine physicians will complete the automated training program then read the florbetapir-PET images from 151 subjects with repeat readings of 33 randomly selected images. Readers will rate each case as either positive for significant tracer accumulation in cortical gray matter or negative for significant tracer accumulation in cortical gray matter. The inter-rater reliability, sensitivity and specificity of the readers will be evaluated.
The primary image set for determination of inter-reader agreement is comprised of images from 119 subjects from two previous clinical studies (A07[NCT00857415]/A16[NCT01447719] and A05[NCT00702143]). This included all 59 subjects who came to autopsy in Study A07(NCT00857415) and it's follow-up study, A16(NCT01447719), and a set of 60 cases randomly selected from Study A05(NCT00702143) subjects, including 20 cognitively-normal controls, 20 with mild cognitive impairment) MCI, 20 with AD.
Subsequently, the protocol was amended to include all remaining A05(NCT00702143) MCI patients that were not used in the training program (n=32); 13 of these 32 scans presented for repeat reading (to increase the number of A05 MCI cases with repeated reads to 20). This increased the number of unique cases in the validation dataset to 151 scans with 33 scans repeated yielding a total of 184 scans reviewed by the readers.
Tipo de estudio
Inscripción (Actual)
Fase
- No aplica
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Eligibility for subjects scans to be used in this study is determined by subject's eligibility/enrollment in Study A05 (NCT00702143) or A07 (NCT00857415).
Alzheimer's disease (AD) group key eligibility criteria (from Study A05[NCT00702143]):
- Male or female at least 50 years of age
- Have probable AD per National Institute of Neurological and Communication Disorders and Stroke (NINCDS) criteria
- Mini mental state exam (MMSE) score between 10 and 24 inclusive
Mild cognitive impairment group key eligibility criteria (from Study A05[NCT00702143):
- Male or female at least 50 years of age
- Complaints of memory or cognitive decline corroborated by an informant
- Clinical dementia rating of 0.5
- No obvious cause for cognitive impairment (eg, head trauma or stroke)
- Cognitive impairment onset within the past year
- MMSE score greater than 24
Cognitively normal volunteer group key eligibility criteria (from Study A05[NCT00702143]):
- Male or female at least 50 years of age
- MMSE score greater than or equal to 29 and cognitively normal by informant report and psychometric test battery at screening
Autopsy cohort key eligibility criteria (from Study A07[NCT00857415]):
- Male or female 18 years or older
- Projected life expectancy of less than 6 months
- Consent to brain donation
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Diagnóstico
- Asignación: N / A
- Modelo Intervencionista: Asignación de un solo grupo
- Enmascaramiento: Único
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
---|---|---|
Inter-rater Reliability
Periodo de tiempo: Scan acquired 50-60 min post-injection
|
Measure of agreement among five readers using a binary read method (amyloid positive/negative) calculated using Fleiss' kappa.
All scans were read in a blinded fashion without access to clinical information.
|
Scan acquired 50-60 min post-injection
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
---|---|---|
Sensitivity of Florbetapir-PET to Detect Moderate to Frequent Beta-amyloid Neuritic Plaques (Probable/Definite Alzheimer's Disease)
Periodo de tiempo: at autopsy, within 2 years of scan
|
Calculated as the percent of true positives which are correctly identified
|
at autopsy, within 2 years of scan
|
Specificity of Florbetapir-PET to Detect no or Sparse Beta-amyloid Neuritic Plaques (Probable/Definite Alzheimer's Disease)
Periodo de tiempo: at autopsy, within 2 years of scan
|
Calculated as the percent of true negatives which are correctly identified
|
at autopsy, within 2 years of scan
|
Otras medidas de resultado
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
---|---|---|
Median Sensitivity and Specificity vs. CERAD Diagnosis
Periodo de tiempo: Baseline scan
|
Median sensitivity and specificity for 5 independent readers to detect moderate to frequent amyloid plaques (per CERAD criteria).
|
Baseline scan
|
Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 18F-AV-45-PT01
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
Ensayos clínicos sobre florbetapir F 18
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Avid RadiopharmaceuticalsNational Institute of Neurological Disorders and Stroke (NINDS); National Institutes...TerminadoEnfermedad de ParkinsonEstados Unidos
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Avid RadiopharmaceuticalsTerminadoEnfermedad de AlzheimerEstados Unidos
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Avid RadiopharmaceuticalsTerminadoEnfermedad de alzheimer
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Avid RadiopharmaceuticalsTerminadoDefecto cognitivo leve | Enfermedad de alzheimerEstados Unidos
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Avid RadiopharmaceuticalsEli Lilly and CompanyTerminado
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Chang Gung Memorial HospitalDesconocido
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