Orally-Bioavailable Peroxynitrite Decomposition Catalyst Targeting Post-Surgical Pain

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Project Summary / Abstract: Pain is currently the most prevalent, disabling, and costly health issue in our country, and this problem will continue to grow as our population ages. The societal impact of pain (e.g., treatment costs, work loss, decreased productivity, co-morbidities with addiction, depression and suicide) exceeds the annual combined costs of heart disease, diabetes, and cancer. Unfortunately, the drugs predominantly used to treat pain today, opioids, are addictive and require increasing dosages to obtain a given level of pain relief. The difficulties posed by opioid use are magnified tremendously by the strong potential for addiction and abuse. According to the Centers for Disease Control and Prevention, approximately 78 people die every day from overdoses related to prescription painkillers. These problems with opioids, and their limited efficacy over the longer term highlight the need for new pain medicines. The scientific purpose of this project is to conduct studies to advance a promising new pain therapeutic (CT-044), belonging to a novel chemotype / pharmacological class, into first-in-human studies. Our innovation is the discovery of the first non-metal based PN decomposition catalyst. The past decade has demonstrated that 1) free radicals contribute to pain and 2) their interactions with nociceptive sensory neurons in the peripheral nervous system perturb nociceptive signaling. Our goal is to move our lead molecule, CT-044 into the clinic through the investigational new drug enabling studies described in this proposal. As will be described in detail below, we have amassed an impressive preclinical data package on this lead asset showing that the compound is highly efficacious in incisional and inflammatory pain models. In addition, CT-044 has a favorable oral disposition and a clean toxicology profile in a broad variety of assays. This motivates us to pursue a direct-to-phase-II proposal to conduct GLP toxicology studies to enable an IND application to the FDA to move this asset toward the clinic for trials for post-surgical pain. We believe, based upon our experience, that the CT-044 ‘data package’ exceeds, and that the data favorably compares to, even the most rigorous criteria posed by pharma houses that have successfully advanced analgesics to market. The majority of the proposed work constitutes dose escalation in order to set early human dose ranges, and conducting (essentially repeating) toxicological studies under GLP, and lastly, manufacturing CT-044 under GMP. Collectively this is a rare opportunity to advance a novel therapeutic class into humans with a high probability for success due to extensive preclinical ‘de-risking’ studies. 1