SWEETWATER, Tenn. -

TennCare has approved out-of-state treatments for two brothers suffering from a rare genetic disease.

Two-year-old Tre Johnson and one-year-old Bryson Johnson of Sweetwater will get treatment at Cincinnati Children's Hospital, which is the leading research hospital for IPEX syndrome.

The boys' pediatrician says the disease causes their immune systems to attack their bodies instead of offering protection. There can be a multitude of symptoms including diabetes, thyroid disease and skin conditions.

The family says they are due at the hospital Sunday and the boys will likely receive treatment there over the next year.