Antiva Biosciences Inc. has developed an intravaginal topical treatment, ABI-2280, for high-risk cervical infections with human papillomavirus (HPV). In a phase Ib/II study, after two weeks of treatment at the highest dose of the DNA polymerase inhibitor, 46% of patients were negative for high-risk HPV at week 12, compared to just 16% of patients treated with placebo.