I’ve been taking metformin for years and asked my oncologist about it (thinking maybe I needed a stronger dose) and he said it hasn’t been proven to help with cancer. I also have 3C high grade serous. Lynparza is supposed to help keep it at bay but it didn’t work for me. Once it’s in your lymph nodes it seems to travel to different locations. Hopefully this new treatment is the one that works for me. Will pray Lynparza works for you!!