Alexandra and Walter Perez say their son Armando (right) started kindergarten this year with a new lease on life after taking part in a clinical trial of a new drug that has eased his symptoms of PFIC, a rare genetic disorder that causes constant itchiness. (Photo: Shania Leigh Imagery) Health Study shows promise for treating rare genetic liver disorder Progressive familial intrahepatic cholestasis (PFIC) typically leads to liver failure
