April 2026 AiCuris Anti-infective Cures announced that the U.S. FDA accepted the New Drug Application (NDA) for pritelivir and granted it Priority Review for the treatment of acyclovir-resistant HSV infections in immunocompromised patients. The company also presented additional positive Phase 3 efficacy data at ESCMID Global 2026.
January 2026 Innovative Molecules GmbH completed the Phase 1 clinical development program for IM-250 (adibelivir) and advanced the helicase-primase inhibitor into Phase 2 clinical testing for recurrent genital herpes.
October 2025 AiCuris Anti-infective Cures announced positive Phase 3 (PRIOH-1) results for pritelivir in immunocompromised patients with acyclovir-resistant herpes simplex virus (HSV) infections. The study demonstrated improved efficacy compared with foscarnet while maintaining a favorable safety profile.