Have you come across an ad informing you that stem cells can cure your [insert disease/condition here]? These marketing claims made by so-called “stem cell" clinics are everywhere. In reality, there are currently very few stem cell treatments that are proven both safe and effective and/or approved by regulatory authorities. This month's ISSCR blog explains what you can do to report false marketing claims or adverse events from clinics offering unproven stem cell "therapies."