John Cossman has been battling cancer for eight years . He turned to clinical trials to stay alive after regular treatment options ran out . He underwent his fourth clinical study this summer ; he 's one of 16 people in the study . The results are expected later this year, and will be presented at a scientific meeting next month.
John Cossman has been battling cancer for eight years . He turned to clinical trials to stay alive after regular treatment options ran out . He underwent his fourth clinical study this summer ; he 's one of 16 people in the study . Before FDA approval , a drug goes through yearslong testing .