Dr. Craig Coopersmith, director of Emory University's Critical Care Center, described the preliminary findings as "huge" and a potential game changer.
Coopersmith said Tuesday he planned to discuss the news at a town hall with staff later in the day and said some physicians may decide to make the drug part of their standard care for critically sick patients on ventilators during the coming weeks -- or even sooner.
U.K. Health Secretary Matt Hancock hailed the Oxford findings as an endorsement of the country’s scientific and medical prowess, as the government comes under growing scrutiny for its handling of the pandemic. Britain has the highest death toll from the virus in Europe, with about one-tenth of the global total of fatalities.
“In truth, U.K. life sciences are leading the world in vaccine development, in the development of treatments and in immunology,” Hancock said in a video message. “But it’s by working together that we’ve been able to bring this result to bear.”
Prime Minister Boris Johnson also welcomed the breakthrough and said the drug will now be made available across Britain's National Health Service.
“We have taken steps to ensure we have enough supplies even in the event of a second peak” in coronavirus cases, he said at the U.K.’s daily televised coronavirus briefing. Hancock said the U.K. has stockpiled more than 200,000 courses of dexamethasone after spotting its potential.
The steroid medicine has been available as a generic for decades and costs $6 or less for a course of treatment, health officials said. Made by pharma companies including Mylan NV and Merck & Co., it is used to treat a range of ailments including rheumatism, asthma, allergies and even to help cancer patients better handle the nausea triggered by chemotherapy.
The dexamethasone research was part of a larger study, called Recovery, that compares a number of potential treatments in an attempt to quickly identify those that are most effective. More than 11,500 patients have been enrolled from over 175 National Health Service hospitals across the U.K.
A number of anti-inflammatories are being studied around the world for helping coronavirus patients cope with a powerful overreaction of the immune system, sometimes called a cytokine storm.
Based on the Oxford study results, dexamethasone would prevent one death by treatment of eight ventilated patients, and around one for every 25 patients requiring oxygen alone, the researchers said. There was no benefit among patients who didn’t need breathing support.
“While this study suggests dexamethasone only benefits severe cases, countless lives will be saved globally,” said Nick Cammack, COVID-19 therapeutics accelerator lead at Wellcome, the medical research philanthropy group.
The need for new treatments has been exacerbated as the U.S. Food and Drug Administration revoked emergency-use authorization for two malaria drugs touted by President Donald Trump as COVID-19 treatments this week after determining they were unlikely to work against the virus and could have dangerous side effects. The medications may also interfere with the effectiveness of Gilead's remdesivir, the agency warned.
The U.K.’s Medicines and Healthcare Products Regulatory Agency on Tuesday told researchers to suspend recruitment of further participants into trials of one of the antimalarials, hydroxychloroquine, for treatment of COVID-19.
The New York Times, Bloomberg and The Associated Press contributed to this report.