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Alzheimer’s drug slowed progression of disease in late-stage study, drugmakers say

  • September 28, 2022

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“Today’s announcement gives patients and their families hope that lecanemab, if approved, can potentially slow the progression of Alzheimer’s disease, and provide a clinically meaningful impact on cognition and function,” said Michel Vounatsos, Chief Executive Officer at Biogen.

Tokyo-based Eisai and Cambridge, Massachusetts-based Biogen disclosed the clinical trial results in a news release. More detailed findings about the late-stage study will be presented on Nov. 29 at the Clinical Trials of Alzheimer’s Disease Conference in San Francisco.

latest test to a three decade-old theory that Alzheimer’s disease is triggered by amyloid beta plaques in patients’ brains and can be slowed by drugs that target the buildup of those plaques.

Drug companies have struggled through a long list of failed clinical trials with amyloid-targeting drugs. Biogen’s Aduhelm became the first new amyloid-targeting Alzheimer’s drug to gain FDA  approval last year. It was controversial because it was based on two studies that ended prematurely and yielded mixed results.

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The FDA’s outside expert advisers recommended against approval, and when the agency approved the drug anyway, three advisers quit in protest. 

Haruo Naito, Eisai’s Chief Executive Officer, said the lecanemab study results “prove the amyloid hypothesis, in which the abnormal accumulation of (amyloid beta) in the brain is one of the main causes of Alzheimer’s disease.” 

Biogen, Eisai, and all other drug companies seeking FDA accelerated approval for a class of Alzheimer’s drugs known as monoclonal antibodies would fall under Medicare’s decision to pay for the drugs only in clinical trials. Medicare’s decision to limit payments to drugs in clinical trials followed the FDA’s handling of Biogen’s Aduhelm. 

If lecanemab secures FDA’s accelerated approval in January, Eisai will quickly seek the more conventional, full FDA approval so patients can access the drugs outside of a clinical trial, said Ivan Cheung, Eisai’s United States CEO.

In a statement, the Alzheimer’s Association said lecanemab’s study reported the “most encouraging results … to date” among drugs targeting Alzheimer’s disease.

“For people in the earliest stages of Alzheimer’s, this treatment has the potential to change the course of the disease in a clinically meaningful way. These results indicate lecanemab may give people more time at or near their full abilities to participate in daily life, remain independent and make future health care decisions,” the association said.

Ken Alltucker is on Twitter as @kalltucker or can be emailed at alltuck@usatoday.com.

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