Biotechnology company Regeneron released some early results of tests using its antibody cocktail in coronavirus patients Tuesday, and said it seemed to reduce levels of the virus and improve symptoms in patients.
The greatest improvements were seen in patients who hadn't already mounted a natural response to the infection, the company said.
The results only involve 275 patients of the 1,000 they have enrolled in this particular trial, but appear "very promising," Dr. Jeanne Marrazzo, the director of the division of infectious diseases at University of Alabama at Birmingham, told CNN.
The treatment also showed positive trends at reducing medical visits for the patients, none of whom were sick enough to be hospitalized at the start of the trial, the company said. The numbers in this early release of information were small and the data has not been peer reviewed yet. Only topline data was available in a news release from the company.
A company spokesperson said the data validates the treatment as a therapeutic substitute for a natural response to the virus.
Marrazzo said what stood out to her is that the study characterized patients by their immune responses prior to treatment and determined who did and did not benefit.
"What I think is fascinating is that it shows that antibodies really matter and the antibody to the spike protein was really helpful, particularly when people made the antibodies themselves," said Marrazzo. "Whether it's antibody therapy or vaccine that target these proteins, it sounds like we are on the right track. I think that's really encouraging."
Read the full story: