On Apr. 30, 2020, Eiger BioPharmaceuticals announced that the first patients have been dosed in a Phase 2 study of peginterferon lambda (Lambda) in outpatients with mild COVID-19 at the Stanford University School of Medicine.

Approximately 120 patients were randomized 1:1 to a single subcutaneous dose of Lambda or normal saline placebo to evaluate the efficacy of Lambda in reducing the duration of viral shedding of SARS-CoV-2 virus and in reducing duration of symptoms and hospitalization in patients with mild COVID-19. Patients will be followed for 28 days.