ACTIV-2 . La Nueva Terapia con Anticuerpos Policlonales Cumple con los Criterios Para Pasar a la Fase III en el Ensayo ACTIV_2 .

 

The AIDS Clinical Trials Group (ACTG), the largest global HIV research network, which recently expanded its focus to include evaluating outpatient treatment for COVID-19, today announced that SAB-185, a novel polyclonal antibody therapy, has demonstrated safety and efficacy in phase 2 that meet the criteria for graduation to phase 3 in the ACTIV-2 Outpatient Monoclonal Antibodies and Other Therapies Trial (ACTG A5401).

SAB-185 is the second agent to graduate to phase 3 in ACTIV-2, which is evaluating multiple investigational agents to treat early, symptomatic COVID-19 in non-hospitalized individuals. The combination monoclonal antibody treatment BRII-196/BRII-198 graduated to phase 3 in May 2021 and recently reported positive data.

SAB-185 (developed by SAB Biotherapeutics), is the first polyclonal antibody (a treatment containing a variety of targeted, highly potent antibodies) to be evaluated in ACTIV-2. SAB-185 is made by Tc Bovines™ that have been genetically engineered to make fully human antibodies. Once the bovines develop an immune response and generate antibodies against the spike protein on the surface of SARS-CoV-2 (the virus that causes COVID-19), their plasma is collected, and the antibodies are separated out and purified.

The graduation of SAB-185 from phase 2 to phase 3 in ACTIV-2 is an important milestone as we evaluate a variety of potential treatments for people who have COVID-19 but aren't sick enough to be hospitalized. We are thrilled that, per the study protocol, the interim analysis of phase 2 data from participants receiving SAB-185 demonstrated sufficient safety and efficacy to justify advancement to phase 3."

Judith Currier, M.D., M.Sc., University of California, Los Angeles

The phase 2 study of SAB-185 evaluated two doses, both of which met pre-defined criteria for graduation to phase 3. Evaluations are ongoing to determine which of these doses will advance to phase 3. The planned phase 3 study will evaluate the safety and efficacy of SAB-185 to prevent hospitalization and death in non-hospitalized adults with COVID-19. The study will enroll 1,200 participants at high risk of progressing to severe COVID-19. Half of the participants will receive SAB-185 and half will receive casirivimab and imdevimab, Regeneron's combination monoclonal antibody treatment. Both will be administered as an intravenous infusion. ...