Cole Sibus as Ansel Parios on ABC's "Stumptown," which has been renewed for a second season. (Kelsey McNeal/ABC)

Two fledgling TV shows featuring main characters taking care of adult siblings with developmental disabilities have been renewed for second seasons. “Stumptown,” an hourlong drama, and “Everything’s Gonna Be Okay,” a half-hour comedy, feature characters with Down syndrome and autism, respectively. In both shows, an actor with the same condition portrays the character.