The gut is the body’s largest sensory organ with a surface area 100 times that of the skin. It contains more nerve cells than the spinal cord, most of the immune system, and 95 percent of the body’s serotonin. Kallyope has assembled a discovery and translation platform to developed therapies to treat metabolic, gastrointestinal, and neurologic conditions by targeting the gut-brain connection. We spoke to Nancy Thornberry, chair of R&D for Kallyope, about the gut-brain connection, the company’s platform technology, and the case for targeting these interactions to treat a wide range of conditions.