Anthony Fauci Anthony FauciOvernight Health Care: US coronavirus deaths hit 200,000 | Ginsburg's death puts future of ObamaCare at risk | Federal panel delays vote on initial COVID-19 vaccine distribution White House seeks to change subject from 200K COVID-19 deaths Putin calls on UN to strengthen World Health Organization MORE, a key member of the White House coronavirus task force, said results from a clinical trial of a potential COVID-19 treatment showed “quite good news.”

Data from an international study of remdesivir showed patients treated with the drug recovered 31 percent faster than patients given a placebo, Fauci told reporters at the White House on Wednesday, alongside President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE and Vice President Pence.

“Although a 31 percent improvement doesn’t seem like a knockout 100 percent, it is a very important proof of concept,” Fauci said. “What it has proven is that a drug can block this virus.”

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He added the drug will be “the standard of care.”

Remdesivir patients also saw an 8 percent mortality rate, which is slightly lower, but not statistically significant, from the 11.6 percent mortality rate of placebo patients, Fauci said. The drug's impact on the COVID-19 mortality rate needs further analysis, he said.

The clinical trial, which began in February, evaluated the safety and efficacy of remdesivir, an experimental drug developed by Gilead Sciences, in 1,063 hospitalized adults with COVID-19. The trial was the first in the U.S. to evaluate an experimental treatment for COVID-19.

"We think it's really opening the door to the fact that we now have the capability of treating [COVID-19]," Fauci said of the results.

He said he can "guarantee" the drug will improve as more people, companies and investigators get involved. The study has not yet been published or peer reviewed.

Scientists have had high hopes for remdesivir as a potential COVID-19 treatment. The drug originally developed as a potential treatment for Ebola, but was found to be ineffective.

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However, the drug has shown promise against coronaviruses in experiments.

Scott Gottlieb, former Food and Drug Administration commissioner under President Trump, said on CNBC Wednesday he thinks the drug is probably not a “home run” treatment for COVID-19, but it could help people avoid worse outcomes.

“It’s not going to be a cure, but it is going to be a drug potentially that if you use it particularly early in the course of a disease — you hang it in the emergency room when someone comes in with COVID, especially someone with risk factors that predict they’ll have a worse outcome from the disease — it could reduce their chances of having a really bad outcome,” he said, adding that is the case with other antivirals used to treat the flu.

Updated at 1:50 p.m.