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Lots of drug companies talk about putting patients first — but this one actually did

In college, Amylyx cofounders Josh Cohen and Justin Klee dreamed of finding a treatment for diseases like ALS. When their drug's promise did not pan out, they pulled it voluntarily from the market.
Amylyx Pharmaceuticals
In college, Amylyx cofounders Josh Cohen and Justin Klee dreamed of finding a treatment for diseases like ALS. When their drug's promise did not pan out, they pulled it voluntarily from the market.

In April, the co-CEOs of Amylyx Pharmaceuticals fulfilled a promise they made years earlier to people with the deadly disease ALS.

Justin Klee and Josh Cohen, who started Amylyx while they were students at Brown University, announced that the company would voluntarily stop selling an ALS drug that had brought in $380 million in 2023.

The reason: A large study had found that the drug — called Relyvrio in the U.S. and Albrioza in Canada — wasn't helping people with ALS, also known as amyotrophic lateral sclerosis or Lou Gehrig's disease.

"The answer was pretty simple: This should not remain on the market," Klee says.

Amylyx also announced that ALS patients who chose to remain on the drug would get it for free.

"We've made a commitment at every point to act with integrity, to do the right thing, to follow the science," Cohen says. "That's what we tried to do here."

The unusual decision brought praise from both patients and critics of the pharmaceutical industry.

"I think Amylyx did right," says Brooke Eby, a Maryland resident who is 35 and living with ALS. "I hope it sets a good example for the future."

Experts and advocacy groups agreed. The ALS Association applauded Amylyx for "working closely with the ALS community." And so did some experts who have criticized the FDA's decision to approve Relyvrio.

"Amylyx did very well here," says Holly Fernandez Lynch, an assistant professor of medical ethics and health policy at the University of Pennsylvania. "But they didn't have to," she adds, "and that's concerning."

From Dorm Room to Drug Firm

Amylyx was founded by Klee and Cohen in 2013, after lots of dorm-room chats about neurodegenerative diseases.

They wanted to find a drug that could help nerve cells withstand diseases like ALS, which affects motor nerve cells in the brain and spinal cord, causing paralysis and death within a few years.

"The idea is that you can at least boost up what the neuron has so that it lives longer, or in the best case, it doesn't die at all," Cohen says.

Klee and Cohen thought they could do that by combining two existing drugs.

One is sodium phenylbutyrate, which is used to treat urea cycle disorders, a group of inherited metabolic disorders that can damage nerve cells. The other is taurursodiol, a naturally occurring substance that appears to protect nerve cells from damage.

In 2020, a phase 2 clinical trial of 137 patients with ALS seemed to confirm their hunch. The disease appeared to progress more slowly in those who got the drug combination known then as AMX0035.

In an interview shortly after the results came out, Klee was jubilant.

"The odds are stacked against you," he said. "So to have something that really worked, it was a really special feeling."

To confirm the result, Amylyx was launching a larger, phase 3 study, the type usually required by the Food and Drug Administration before it approves a drug.

But the company was anxious to get their drug on the market. So in 2022, they asked the FDA to approve it, based solely on the results of the smaller clinical trial.

FDA advisors initially opposed the move, saying the smaller study did not provide sufficient evidence that the drug worked. Then, after vigorous lobbying by ALS patient groups, they changed their mind.

The FDA approved Relyvrio in September of 2022.

By November, Brooke Eby was able to take her first dose of the drug, which came as a powder to be mixed with water.

"It was the worst-tasting thing I'd ever had," says Eby, who shared a video of the experience on social media.

Eby kept drinking it anyway. And in spite of the voluntary recall of Relyvrio, she has no regrets.

"If they had that first trial with the positive results and the FDA didn't approve it," she says, "we'd all be wondering, 'Well, what if this really could have helped us?'"

A nonbinding promise to do right

One reason the FDA decided to approve Relyvrio may have been a promise that Cohen and Klee made during an advisory committee meeting. It involved the results of the ongoing phase III study, called Phoenix.

"If the Phoenix trial is not successful, we will do what's right for patients, which includes taking the drug voluntarily off the market," Klee told regulators.

Klee and Cohen were able to make that promise because of the way they'd built their company.

"We have chosen not to partner and to stay independent," Klee said in a 2020 interview. "We want to make sure that this is delivered responsibly in the right way for the community."

The promise got a skeptical response from many drug-industry watchers, including the University of Pennsylvania's Lynch.

"At the time, I was like, 'Oh, come on, what does this mean, We'll do what's right for patients? That could be anything,'" she says.

The promise wasn't legally binding, Lynch says, and the FDA rarely takes an approved drug off the market.

So Lynch was a bit surprised when Amylyx decided to simply stop selling its drug.

"To the company's credit, they did not even suggest that there were some subgroups that benefitted or there was some reason to do another study," she says. "The company could have made the FDA's life a lot harder if they didn't behave in such an upstanding way."

The reason involves the approval options available to the FDA, Lynch says.

One is accelerated approval, which is possible when a drug has demonstrated a biological effect that is likely to be beneficial. For example, the FDA could offer accelerated approval to a drug shown to reduce cholesterol, even though the product had not yet been shown to prevent heart disease or extend life.

Accelerated approval allows the FDA to get a new drug on the market while still requiring the maker to conduct additional studies that will show whether patients benefit. If those studies fail to show a benefit, the agency has a path to removing the drug from the market.

But Relyvrio did not qualify for accelerated approval. The phase 2 study suggested that the drug was helping patients live better and longer, but did not find relevant biological changes, like a reduction in inflammation, a hallmark of ALS.

So the FDA had to choose between giving Relyvrio full approval or not approving it at all.

That shows the need for the FDA to have some sort of conditional approval for drugs like Relyvrio, Lynch says. Then, if they don't work, the agency wouldn't have to depend on the drug's maker to voluntarily pull its product.

Lynch does have one criticism of Amylyx: the cost of Relyvrio, which came to about $158,000 a year.

"It would have been nice to see the company say, 'We're not going to charge full price for this drug until the phase 3 is done,'" Lynch says." But the market incentives obviously are not set up for that."

When Amylyx announced the Phoenix trial results, its stock fell by more than 80 percent in a matter of hours. The market value of Amylyx declined by more than a billion dollars.

And before long, some shareholders announced they were suing Amylyx, saying the company withheld information about Relyvrio that would have signaled trouble.

Cohen and Klee aren't surprised by the suit, which is ongoing.

"We feel very good about how we've conducted ourselves," Cohen says. "But of course there will always be those who argue otherwise."

Still nerdy

It's been more than a decade since Josh Cohen and Justin Klee began hanging out in a college dorm, talking about brain diseases. Their lives are a bit different now.

"I have a very loving and patient wife," Klee says. "We have a one-year-old puppy who keeps us grounded."

"I also have a wife, no dog," Cohen adds — though Klee quickly points out that Cohen and his wife are the godparents to his dog.

Both men say their goals haven't changed since their college days.

"We were nerdy before starting Amylyx. We're still nerdy now, and still get to do a ton of science, which I think is really exciting," Cohen says.

Amylyx is testing Relyvrio on people with another fatal condition called Wolfram syndrome. And once again, early results are promising.

The company is also developing another drug for ALS. This one, known as an antisense oligonucleotide, is designed to prevent cells from making a protein that's central to the disease.

"ALS really needs better therapies," Cohen says. "I think it's critical that we don't give up."

Brooke Eby, who is now in a wheelchair because of ALS, agrees.

"Failing is okay," she says. "Maybe this will get us one step closer to figuring out something that does work."

Cohen and Klee say they are guided by an admonition they once got from another person living with ALS: "Research like your lives depend on it, because mine does."

Copyright 2024 NPR

Jon Hamilton
Jon Hamilton is a correspondent for NPR's Science Desk. Currently he focuses on neuroscience and health risks.