SAN DIEGO, March 14, 2023 – Primmune Therapeutics, a biotech company harnessing the power of the innate immune system to treat solid tumors in the advanced cancer setting and for the clearance of human papillomavirus and related pre-cancerous cervical lesions, today announced the upcoming presentation of new clinical data from its Phase 1 study of PRTX007, an orally administered prodrug of a novel, small molecule toll-like receptor 7 (TLR7)-specific agonist, at the 2023 American Association for Cancer Research (AACR) Annual Meeting. The AACR Annual Meeting will be held in Orlando, Florida from April 14-19. An e-poster will be made available online Tuesday, April 18 at 9 a.m. ET.
Title: Activation of innate and adaptive immune response with a clinical stage TLR7 agonist prodrug PRTX007
Presenting Author: Curtis Scribner, M.D.
Abstract Number: CT180
Session Title: First-in-Human Phase I Clinical Trials 2
Session Date and Time: Tuesday, April 18, 9:00 a.m. ET to 12:30 p.m. ET
Location: Orange County Convention Center, Poster Section 45
PRTX007, Primmune’s lead clinical development candidate, is designed to provide well-tolerated, controlled, long-term stimulation of the innate immune response while also potentiating long-term effective innate and adaptive immune responses. PRTX007 administration uniquely activates plasmacytoid dendritic cells (pDCs), leading to a systemic immune poly-IFN response without stimulating production of NF-κB-driven proinflammatory factors like IL-6, TNFα or IL-1β. Activated pDCs directly deliver interferons to target cells by paracrine transfer. Conceptually, this is equivalent to administering a therapeutically effective cocktail of all Type I/III IFNs while avoiding the associated side effects and adverse events. Furthermore, PRTX007 administration leads to systemic activation of anti-tumor effector CD8+ T cells and NK cells. PRTX007 is being rapidly advanced towards clinical trials for solid tumors in the advanced cancer setting and for clearing human papillomavirus-transformed pre-cancerous cervical lesions.
About Primmune Therapeutics
Primmune Therapeutics is a clinical-stage biotech harnessing the power of the innate immune system by developing small molecule, orally administered toll-like receptor 7 (TLR7) agonists for the treatment of solid tumors in the advanced cancer setting and for clearing human papillomavirus-transformed pre-cancerous cervical lesions. For more information, please visit https://www.primmunerx.com/.