Dogwood to present on Halneuron pain research program

Dogwood (DWTX) Therapeutics announced that its Chief Medical Officer will present an overview of the Halneuron pain management research program at the 19th Annual Pain Therapeutics Summit on October 14, 2025. Dogwood Therapeutics is developing Halneuron, a highly purified version of tetrodotoxin, to treat Chemotherapy Induced Neuropathic Pain, or peripheral neuropathic pain that occurs after chemotherapy with certain agents. Tetrodotoxin is a potent and specific modulator of the Nav 1.7 sodium channel that is directly involved in pain transmission in the peripheral nervous system. Voltage Gated Sodium Channels Nav 1.7, Nav 1.8 and Nav 1.9 all play key roles in the perception and transmission of pain signals within the peripheral nervous system. Current research suggests that the Nav 1.7 channel is a key regulator of the threshold for depolarization of sensory neurons, whereas changes in Nav 1.8 regulate the rate of repolarization of sensory neurons. A recently conducted pre-clinical study compared the efficacy of Halneuron and VX-548 in rats with CINP and investigated the potential additive efficacy of combining the two agents. Halneuron and VX-548 rapidly and significantly suppressed mechanical allodynia in this preclinical CINP model, with Halneuron demonstrating pain reduction comparable to or greater than VX-548. Notably, the combination did not show additive synergy in reducing pain in the rat model. To date, over 700 patients have been treated in human clinical studies with TTX for a variety of potential indications. Halneuron has demonstrated pain reduction in general cancer related pain in a large multicenter Phase 2 study, as well as in a subsequent Phase 2 CINP study. Halneuron is currently being evaluated in a Phase 2b clinical trial being conducted at 25 sites in the United States. The goal of this study is to assess the safety and efficacy of low dose injectable Halneuron in reducing long standing CINP in cancer patients.