Overview Characterization of Beta Cell Failure Status: Withdrawn Trial end date: 2011-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to characterise beta cell function in subjects who despite taking part in a diabetes prevention program (life style intervention with diet and exercise) exhibit impaired glucose tolerance and beta cell dysfunction. Phase: N/A Details Lead Sponsor: University Hospital TuebingenCollaborator: Merck Sharp & Dohme Corp.