“You don’t want to give a drug with less certain benefit over a drug for which there is more certain benefit,” Dr. Gandhi said.
Future possibilities
“The monoclonal antibodies are important to continue studying, particularly in combinations,” Dr. Gandhi said. Researchers are investigating formulations other than IV infusion to make therapy more convenient. For example, a subcutaneous injection like insulin would make administration at home more of a possibility.
Investigators are also looking at oral antiviral therapy, inhaled antivirals, and the promise of using interferon therapy. Dr. Gandhi added there is also “a lot of work around medications to reduce the excess inflammation that drives very severe COVID-19.”
‘Exciting news’ on AstraZeneca vaccine
Although not part of the IDSA guidelines, “we saw the news from AstraZeneca this morning, which is exciting,” Dr. Gandhi said during a media briefing.
Unlike the Pfizer and Moderna messenger RNA vaccines, which use the genetic material of the virus to make the virus proteins that elicit an immune response, the AstraZeneca/Oxford University vaccine uses a viral vector to carry the SARS-CoV-2 protein, to which the body produces an immune response.
“I’m thrilled that several different vaccines are showing important effects at rates higher than the FDA benchmark of 50%, and these are well exceeding that,” Dr. Gandhi said.
“One interesting thing from the [AstraZeneca] press release is they show asymptomatic infection being reduced,” he added. “That is critical because we know a lot of transmission of SARS-CoV-2 comes from asymptomatic people.”
Reasons for optimism
In response to a question about whether the experts feel more optimistic about COVID-19, Dr. Bhimraj said he is cautiously optimistic. “We have made tremendous progress in therapeutic agents, and in how the world has come together in the middle of a catastrophe to collaborate, setting our differences apart, to do trials. That is commendable.”
Dr. Gandhi said he felt more optimistic than he did in the spring. He pointed out that physicians and researchers know a lot more about potential blood clotting complications, how to support patients through severe COVID-19 and keep them off a ventilator whenever possible, and how to provide dexamethasone to reduce the risk of death.
Those benefits are in hospitalized patients, however, and “we need ways to prevent people from getting into the hospital, and that is why we are looking at the monoclonal antibodies,” Dr. Gandhi said. “If borne out in larger trials, that will be a major advance.”
“We need to keep our focus on prevention and go back to our idea of flattening the curve. That is critical so our health care systems do not get overwhelmed during this massive surge we are in,” Dr. Gandhi said. “So masking and social distancing are just as important as they always have been.”
Dr. Bhimraj disclosed no relevant financial relationships. Dr. Gandhi has no disclosures for the past 12 months; in the past 3 years, he has served on scientific advisory boards for Gilead and Merck.
This article first appeared on Medscape.com.