Drugmaker Pfizer has confirmed conducting a large study to test its oral antiviral drug for the prevention of COVID-19 infection.
Pfizer and its rivals including US-based Merck and Swiss pharmaceutical Roche Holding AG have been racing to develop an easy-to-administer antiviral pill for COVID-19.
Up to 2660 healthy adult participants aged 18 and older who live in the same household as an individual with a confirmed symptomatic COVID-19 infection will be tested.
The drug is designed to block the activity of a key enzyme needed for the coronavirus to multiply. It will be administered along with an older medication widely used in combination treatments for HIV infection.
In the trial, PF-07321332, designed to block the activity of a key enzyme needed for the coronavirus to multiply, will be administered along with a low dose of ritonavir, an older medication widely used in combination treatments for HIV infection.
To date, Gilead Sciences Inc’s intravenous drug remdesivir is the only approved antiviral treatment for COVID-19 in the United States.
Pfizer has also started another study of PF-07321332 in non-hospitalized, symptomatic adult patients.
Merck and partner Ridgeback Biotherapeutics recently launched a late-stage trial of their experimental drug molnupiravir for prevention of the COVID-19 infection.
Molnupiravir is also being studied in a late-stage trial in non-hospitalized patients to see if it reduces the risk of hospitalization or death.
