The introduction of precision medicine has revolutionized the treatment of cancer and other diseases, but mental health conditions have not benefitted from the same type of treatment innovation. Alto Neuroscience is working to move psychiatry away from a trial-and-error approach to develop targeted medicines with the use of biomarkers to match the right drug to the right patient. We spoke to Amit Etkin, founder and CEO of Alto Neuroscience, about its efforts to develop precision medicines for mental health disorders, its AI platform for biomarker discovery, and its therapeutic pipeline in development.