How Lynparza (olaparib) Treats Ovarian Cancer FDA approved cancer treatment Lynparz (olaparib) treats various types of advanced ovarian cancers that contain a defective BRCA gene. In this video, medical oncologist Stephen Lemon MD discusses how this treatment works, as what types of side effects it may cause. Visit to watch more cancer treatment videos. Lynparza is marketed by AstraZeneca Pharmaceuticals. Dr. Lemon is a medical oncologist who is not affiliated with AstraZeneca.