It is still very early in the game for this treatment. This drug is a monoclonal antibody. The treatment focus of this drug is currently on the cytokine storm that occurs in some critical patients.

"Of seven critically ill patients who received the drug in New York, two were removed from ventilators and two showed significant improvement."

https://nypost.com/2020/03/28/coronavirus-patients-taken-off-ventilators-after-getting-experimental-hiv-drug/