Katie Clapp and Michael Tranfaglia's son was born with a genetic disorder that affects brain development. It makes it hard to learn language and basic daily tasks and often is accompanied by a host of other disorders. To help find a cure, they started a foundation and raised research money. After several setbacks, one treatment is showing promise. NPR neuroscience reporter Jon Hamilton tells Emily Kwong the story.Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)
