Joe Biden’s son has shared a heartbreaking update on his father’s cancer diagnosis. One year on from his diagnosis, his son Hunter Biden has now shared a devastating update on his cancer battle. View this post on Instagram A post shared by Joe Biden (@joebiden)“The cancer has spread, matistised into his bones and further. “On Friday, he was diagnosed with prostate cancer, characterised by a Gleason score of 9 (Grade Group 5) with metastasis to the bone.” View this post on Instagram A post shared by Joe Biden (@joebiden)He captioned the post: “Cancer touches us all.