A shot designed to prevent deadly overdoses is now being tested in humans, offering a potential new tool in the fight against the opioid crisis.
Fentanyl, a powerful synthetic opioid, is responsible for tens of thousands of overdose deaths in the United States each year. Even small amounts can be lethal, and it’s often mixed into other drugs without a person’s knowledge.
Now, researchers are exploring whether a vaccine could stop fentanyl from ever reaching the brain.
From Personal Loss to Scientific Push
For some involved in the effort, the mission is personal.
After losing a close friend to an accidental overdose, one biotech executive helped push forward funding and development for a fentanyl vaccine now in early human trials. The goal: create something that could prevent tragedies before they happen, not just respond to them.
Collin Gage, CEO and director of ARMR Sciences, Inc., never imagined he’d lose his 22-year-old friend to an overdose. It was unintentional and deadly. This devastating loss and several others in his circle of friends inspired him to get involved in preventing overdoses. Naloxone (Narcan) can reverse many overdoses, but it must be given quickly and may require multiple doses in fentanyl cases.
“If I can prevent one person from dying, this will all be worth it,” Gage said in an interview with Men’s Journal.
Fentanyl overdoses reached a record high in 2022 and then began to wane, according to USA Facts, but with the emergence of stronger synthetic opioids mixed in with other street drugs, these improvements may be short-lived.
Gage is also a co-founder of Armour Families, a non-profit made up of people like him, who have lost loved ones to fentanyl, working to provide education and prevention strategies like this vaccine. They also work with legislators to create bills that will stop pill presses from being sold.
How the Vaccine Works
Unlike traditional treatments such as Narcan, which reverses an overdose after it happens, this vaccine is designed to prevent the drug from taking effect in the first place.
The shot works by training the immune system to produce antibodies that bind to fentanyl molecules in the bloodstream. This prevents the drug from crossing into the brain, where it triggers both the “high” and the life-threatening suppression of breathing.
In theory, this could reduce the risk of overdose and also blunt the drug’s addictive effects.
Clinical Trials are Underway
The vaccine is be effective in mice, according to research published in Molecular Pharmaceutics journal, and now human clinical trials are underway.
Gage raised more than $30 million in public and private funds to support clinical trials of a vaccine that can prevent a fentanyl overdose. The study endpoints are safety and efficacy.
The trial that he helped build recruited 72 volunteers with good overall health to take the fentanyl vaccine. Under medical surveillance, they plan to give participants a medical grade dose of fentanyl similar to what a person would get in a hospital setting to see if they can prevent respiratory depression.
The Vaccine is Adaptable
Drug cartels pivot to make stronger and stronger drugs and Gage says this vaccine can also adapt. The makers can replace the antigen with something that can meet the strength of these newer drugs. Fentanyl might be the drug of choice today, but these preferences change over time.
The Bottom Line
A fentanyl vaccine won’t solve the opioid crisis on its own. But if ongoing trials succeed, it could add something that’s been missing: a way to stop overdoses before they start. For a crisis that’s claimed so many lives, that kind of shift could matter.
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