Core Points - Former President Biden publicly appeared for the first time after starting radiation therapy for prostate cancer on October 18 [1] - Biden was diagnosed with prostate cancer in May, with cancer cells having spread to his bones, and his Gleason score is 9, indicating a high level of aggressiveness [3] - Biden underwent surgery in September to remove skin cancer from his forehead, and he is currently receiving radiation and hormone therapy for his aggressive prostate cancer [3]