In October of 2008 , it was released that Bonham Carter had become a patron of the charity , `` Action Duchenne '' the national charity established to support parrents and sufferers of Duchenne Muscular Dystrophy . In early October 2008 , it was released that Bonham Carter had become a patron of the charity Action Duchenne , the national charity established to support parents and sufferers of Duchenne muscular dystrophy .