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A phase 1 randomised, placebo-controlled, single-blind study to characterise the biomarker effects of the CSF-1 receptor antagonist JNJ-40346527 in participants with mild cognitive impairment. A maximum of 54 participants will be recruited to the two part study. The first part of the study will identify whether it is possible to identify biomarkers that may be used in future studies with JNJ-40346527 and part 2 will investigate a minimal efficacious JNJ-40346527 dose.
Alzheimer's disease (AD) is a slow, progressive disease that profoundly affects memory and everyday function. There are treatments available that can help manage symptoms, but at present there is no cure, and no treatment that is effective at slowing the progression of AD. AD can begin to cause brain damage decades before symptoms such as memory loss become apparent.
The trial will investigate the effect of the drug JNJ-40346527 on CSF-1R (colony stimulating factor-1 receptor), which is a protein on the outside of cells present in the brain. CSF-1R is responsible for the regulation of various cells, including microglial cells. Recent research suggests that reducing numbers of these microglial cells may be beneficial in slowing the progression of Alzheimer's disease. The Investigators want to see how well JNJ-40346527 is able to block CSF-1R, and in turn suppress these microglial cells. The study is designed to investigate whether or not it is possible to identify changes in levels of proteins which interact with CSF-1R, and changes in the activity or number of affected microglial cells present in the brain. This evidence may provide useful "biomarkers", measures of change in the body, which the Investigators could track to see how the drug is working. These "biomarkers" could then be used in further larger studies to more thoroughly test the benefits of the drug JNJ-40346527. The present study is not designed to test whether or not this drug can slow the progression of Alzheimer's disease.
If biomarkers are identified in the study, further studies will be designed to test whether JNJ-40346527 can slow or prevent the progression of Alzheimer's disease.
Cambridgeshire and Peterborough NHS Foundation Trust
Not yet recruiting
University of Oxford
Published on BioPortfolio: 2019-10-15T11:10:59-0400
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Abnormal structures located chiefly in distal dendrites and, along with NEUROFIBRILLARY TANGLES and SENILE PLAQUES, constitute the three morphological hallmarks of ALZHEIMER DISEASE. Neuropil threads are made up of straight and paired helical filaments which consist of abnormally phosphorylated microtubule-associated tau proteins. It has been suggested that the threads have a major role in the cognitive impairment seen in Alzheimer disease.
Vaccines or candidate vaccines used to prevent or treat ALZHEIMER DISEASE.
A progressive form of dementia characterized by the global loss of language abilities and initial preservation of other cognitive functions. Fluent and nonfluent subtypes have been described. Eventually a pattern of global cognitive dysfunction, similar to ALZHEIMER DISEASE, emerges. Pathologically, there are no Alzheimer or PICK DISEASE like changes, however, spongiform changes of cortical layers II and III are present in the TEMPORAL LOBE and FRONTAL LOBE. (From Brain 1998 Jan;121(Pt 1):115-26)
A carbamate-derived reversible CHOLINESTERASE INHIBITOR that is selective for the CENTRAL NERVOUS SYSTEM and is used for the treatment of DEMENTIA in ALZHEIMER DISEASE and PARKINSON DISEASE.
A biochemical phenomenon in which misfolded proteins aggregate either intra- or extracellularly. Triggered by factors such as MUTATION, POST-TRANSLATIONAL MODIFICATIONS, and environmental stress, it is generally associated with ALZHEIMER DISEASE; PARKINSON DISEASE; HUNTINGTON DISEASE; and TYPE 2 DIABETES MELLITUS.
Neurology - Central Nervous System (CNS)
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