Researchers from the University of Southern California are testing a promising drug aimed at preventing or delaying the symptoms of Alzheimer's disease.
The international study – jointly managed by the USC Alzheimer's Therapeutic Research Institute (ATRI) and Janssen Research & Development, LLC – will test Janssen's BACE inhibitor in people who are currently asymptomatic.
The investigational drug aims to block an enzyme involved in the generation of the amyloid peptide, a toxic molecule that is believed to play an essential role in causing Alzheimer's.
"We are now looking at the stage of Alzheimer's that precedes even mild symptoms," said Paul Aisen, founding director of USC ATRI and professor of neurology at the Keck School of Medicine of USC. "It is our view that drugs such as BACE inhibitors may be most effective at the earliest stages of the disease."
USCATRI's role in the study is funded by a new contract with Janssen. USC ATRI and Janssen will provide joint oversight for the study; in addition, ATRI will manage study activities at sites in the U.S. and Canada.
"There is a lot of optimism that research may be ushering in a new era in Alzheimer's drug development," said Gary Romano, M.D., Ph.D., head of Alzheimer's disease clinical development at Janssen. "We may be able to treat the disease using interventions before it becomes advanced, much like you treat high cholesterol to mitigate the risk of heart attacks."
The trial will recruit individuals who show no outward symptoms and are 60 or older. They will then be tested for amyloid accumulation in the brain and, if positive, will be invited to participate in the study. The study will assess cognitive performance, along with other measures related to Alzheimer's, over time.
The study will employ a framework created by USC ATRI investigators for testing drugs at the earliest stages of the disease when treatment would be most effective by attacking the driving molecules before substantial damage to the brain has occurred.
This is a phase 2/3 randomized, doubleblind, placebocontrolled, parallel group, multicenter study in people across North America, Europe, Japan and Australia who have evidence of brain amyloid accumulation but are asymptomatic. More than 1,600 people will be enrolled worldwide, including 660 participants at 75 sites in North America, who have not experienced any clinical signs of Alzheimer's disease.
The Janssen BACE inhibitor is licensed from Shionogi & Co., Ltd. Osaka, Japan. More details about the study can be found at the NIH Clinical Trials web site: https://clinicaltrials.gov/ct2/show/study/