PET Imaging of the Translocator Proteine Ligands (TSPO) With [18 F] DPA-714 Biomarker of NeuroInflammation in Cognitive Decline (NIDECO)

Alzheimer Disease Clinical Trial

— NIDeCo  

Official title:

PET Imaging of the Translocator Proteine Ligands (TSPO) With [18 F] DPA-714 Biomarker of NeuroInflammation in Cognitive Decline (NIDECO)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02062099
• Other study ID #: PHAO13-CH/ NIDeCo
• Status: Completed
• Phase: Phase 1
• Start date: January 2014
• Est. completion date: May 22, 2018

Study information

• Verified date: February 2014
• Source: University Hospital, Tours
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Alzheimer's disease (AD) is the most common cause of dementia in elderly subjects. AD is characterized by brain lesions like extracellular deposits of ß-amyloïd proteins in senile plaques and intracellular neurofibrillary tangles of hyper-phosphorylated tau protein, both of which are associated with the loss of neurons. The development of disease biomarkers for AD (Tau, PhTau and βamyloid dosing in the cerebrospinal fluid, brain MRI, amyloid PET imaging and fluorodeoxyglucose PET imaging) to identify the pathophysiological processes underlying cognitive impairment biomarkers, have been incorporated into revised diagnosis guidelines.

Post-mortem human AD and AD animal model studies have reported inflammatory processes also implicated in the neuropathology of AD, and upregulated levels of pro-inflammatory cytokines.

In vivo visualization of microglial activation has become possible with the development of molecular imaging ligands (tracers) for use with positron emission tomography (PET). The translocator protein (TSPO) formerly known as the peripheral benzodiazepine receptor (PBR), a receptor located in the outer membrane of mitochondria, is upregulated during neuroinflammation. So targeting TSPO with radiolabeled ligands for PET is considered as an attractive biomarker for neuroinflammation.

The main aim of this pilot study is to quantify neuroinflammation, in terms of fixation and distribution of [18F] DPA-714(Binding Potential BP), and to study its relationship with amyloid load, measured with in [18F]AV-45 (Standard Uptake Values ratio) in cognitive decline.

Description:

Molecular imaging of microglial activation could help us document the central inflammatory status of study subjects and assist us in designing future research studies particularly with respect to which subjects to enrol into clinical trials and to evaluate the benefit of specific therapies in selected groups, for example, by monitoring the effects of Aß immunization.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 25
• Est. completion date: May 22, 2018
• Est. primary completion date: May 22, 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 60 Years to 80 Years

Eligibility

Inclusion Criteria:

Criteria common to all participants:

• Signed informed consent

• Age = 60 years old (60-80 years old)

• Native language: French

• Correct sensory abilities (hearing aids accepted) to perform the tests

• Affiliated to a social security system

Criteria for patients with mild to moderate Alzheimer disease defined according to the NINCDS-ADRDA {McKhann, 2011 # 408}:

• MMS between 20 and 25

• contraindication for MRI

Criteria for amnestic MCI patients:

• Amnestic mildcognitive disorder evoking a MA in pre stage dementia {Dubois, 2010 # 273, Dubois, 2007 # 42; Pertersen, 1999 # 21, Albert, 2011 # 409} older than 60 years.

Criteria for patients with isolated memory Complaint (Without Cognitive Decline):

• MMS score = 26

• Normal performance by age and educational level

No inclusion criteria :

• medical history of evolutive disease with conséquences on NCS, chronic alcohol intake, severe depression with MADRS stage > 18

• MA subjects : antagonistic treatment with N-methyl-D-aspartate

• MA or MCI subjects : anomaly on neurologic clinical examination different of the usual symptomatology

Related Conditions & MeSH terms

• Alzheimer Disease
• Cognitive Dysfunction
• Memory Complaint
• Mild Cognitive Impairment

Intervention

Drug:
• [18F]DPA-714 PET/ [18F]AV-45 PET/neuropsychological assessment

Locations

Country	Name	City	State
France	University Hospital of Tours	Tours

Sponsors (1)

Lead Sponsor	Collaborator
University Hospital, Tours

Country where clinical trial is conducted

France, 

References & Publications (5)

Arlicot N, Vercouillie J, Ribeiro MJ, Tauber C, Venel Y, Baulieu JL, Maia S, Corcia P, Stabin MG, Reynolds A, Kassiou M, Guilloteau D. Initial evaluation in healthy humans of [18F]DPA-714, a potential PET biomarker for neuroinflammation. Nucl Med Biol. 20 — View Citation

Beaufils E, Dufour-Rainfray D, Hommet C, Brault F, Cottier JP, Ribeiro MJ, Mondon K, Guilloteau D. Confirmation of the amyloidogenic process in posterior cortical atrophy: value of the Aß42/Aß40 ratio. J Alzheimers Dis. 2013;33(3):775-80. doi: 10.3233/JAD — View Citation

Camus V, Payoux P, Barré L, Desgranges B, Voisin T, Tauber C, La Joie R, Tafani M, Hommet C, Chételat G, Mondon K, de La Sayette V, Cottier JP, Beaufils E, Ribeiro MJ, Gissot V, Vierron E, Vercouillie J, Vellas B, Eustache F, Guilloteau D. Using PET with — View Citation

Corcia P, Tauber C, Vercoullie J, Arlicot N, Prunier C, Praline J, Nicolas G, Venel Y, Hommet C, Baulieu JL, Cottier JP, Roussel C, Kassiou M, Guilloteau D, Ribeiro MJ. Molecular imaging of microglial activation in amyotrophic lateral sclerosis. PLoS One. — View Citation

La Joie R, Perrotin A, Barré L, Hommet C, Mézenge F, Ibazizene M, Camus V, Abbas A, Landeau B, Guilloteau D, de La Sayette V, Eustache F, Desgranges B, Chételat G. Region-specific hierarchy between atrophy, hypometabolism, and ß-amyloid (Aß) load in Alzhe — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Fixation and distribution of [18F]DPA-714 (Binding Potential BP)		2 years
Primary	[18F]AV-45 Standard Uptake Values ratio		2 years
Secondary	Relationship between [18F]DPA-714 uptake and cognitive, affective symptoms at baseline.		2 years