Prader-Willi syndrome is a rare genetic disease with many effects, but it is characterized by an insatiable drive to eat that leads to overeating and obesity. Soleno Therapeutics is in late-stage clinical testing of a treatment for the intense hunger and overeating in patients with Prader-Willi. We spoke to Anish Bhatnagar, CEO of Soleno, about its experimental therapy, how it works, and why it may have application in a broader range of indications.