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US FDA approves Eisai, Biogen’s Alzheimer’s drug from Reuters

US FDA approves Eisai, Biogen’s Alzheimer’s drug from Reuters

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©Reuters. FILE PHOTO: The Eisai Co Ltd logo is displayed on March 8, 2018 at the company’s headquarters in Tokyo, Japan. REUTERS/Issei Kato

By Julie Steenhuysen and Deena Beasley

(Reuters) – The US Food and Drug Administration on Friday approved Alzheimer’s drug lecanemab, developed by Eisai Co (OTC:) Ltd and Biogen Inc (NASDAQ:), for patients in the earliest stages of the mind-wasting disease.

The drug, to be sold under the Leqembi brand, belongs to a class of treatments aimed at slowing the progression of the neurodegenerative disease by clearing sticky clumps of the toxic protein beta-amyloid from the brain.

Almost all previous experimental drugs using the same approach had failed.

“Today’s news is incredibly important,” said Dr. Howard Fillit, Chief Science Officer of the Alzheimer’s Drug Discovery (NASDAQ:) Foundation. “Our years of research into what is arguably the most complex disease humans face is paying off and giving us hope that we can make Alzheimer’s not just treatable, but preventable.”

Eisai said the drug would launch at an annual price of $26,500. Biogen shares, which had been halted, rose 3% to $279.40.

Eisai estimated that the number of U.S. patients eligible for the drug would reach about 100,000 within three years and gradually increase from there in the medium to long term.

dr Erik Musiek, a Washington University neurologist at Barnes-Jewish Hospital, said he was “pleasantly surprised” by the drug’s price.

“Considering the market and the fact that we don’t have any other good disease-modifying treatments, I think it’s in the range of what I would expect,” he said.

Initial patient access is limited by a number of factors, including reimbursement restrictions imposed by Medicare, the US government insurance program for Americans age 65 and older, which account for approximately 90% of people likely to be eligible for Leqembi.

“Without Centers for Medicare & Medicaid Services (CMS) and insurance coverage … access for those who could benefit from the newly approved treatment will only be available to those who can pay out of pocket,” the Alzheimer’s Association said in one Explanation.

Leqembi was approved under the FDA’s expedited review process, an accelerated pathway that speeds access to a drug based on its effect on underlying disease-related biomarkers thought to predict clinical benefit.

“This treatment option is the latest therapy that targets and affects the underlying disease process of Alzheimer’s disease, rather than just treating the symptoms of the disease,” FDA neuroscientist Billy Dunn said in a statement.

The U.S. Centers for Medicare & Medicaid Services (CMS) said Friday that current coverage limitations for drugs approved under the accelerated route may be reconsidered based on its ongoing review of available information.

If the drug gets traditional FDA approval, it would offer broader coverage, according to CMS. Eisai officials said the company plans to present data from a recently successful clinical trial involving 1,800 patients as the basis for a full standard review of Leqembi.

The CMS decision was largely in response to previous Alzheimer’s treatment from Eisai and Biogen. Aducanumab, sold under the brand name Aduhelm, received accelerated approval in 2021 with little evidence the drug slowed cognitive decline and despite objections from the FDA’s outside experts.

Biogen initially priced Aduhelm at $56,000 per year before halving the price. With limited acceptance and insurance coverage, revenue for the first nine months of 2022 was just $4.5 million.

Lecanemab is intended for patients with mild cognitive impairment or early-stage Alzheimer’s dementia, a demographic that doctors believe makes up only a small portion of the estimated 6 million Americans currently living with the memory-wasting disease.

To receive treatment, patients must undergo tests to show they have amyloid deposits in their brain – either through brain imaging or a spinal tap. They’ll also need to have regular MRI scans to monitor for brain swelling, a potentially serious side effect associated with this type of medication.

The drug’s label states that doctors should exercise caution when lecanemab patients are given anticoagulants. This could pose a safety risk, according to an autopsy analysis released this week of a lecanemab patient who had a stroke and later died.

In the large study of lecanemab, given as an infusion, the drug slowed the rate of cognitive decline in patients with early Alzheimer’s disease by 27% compared to a placebo. Almost 13% of the patients treated with Leqembi in the study had brain swelling.

dr Babak Tousi, a neurogeriatrician at the Cleveland Clinic, said the approval will make a “big difference” in this area because it’s based on biomarkers and not just symptoms.

“It will change the way we diagnose Alzheimer’s disease with greater accuracy,” he said.

Tousi acknowledged that the drug’s benefits are likely to be modest. “Nonetheless, it’s an advantage we couldn’t achieve prior to this approval.”

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