In September 2013, Dr. Jay Wunder, a sarcoma specialist at Mount Sinai Hospital, Toronto, noted that survival rates for osteosarcoma have increased dramatically since Fox's death. Most patients "get limb-sparing or limb-reconstructive surgery. Now the cure rate's almost up to 80 per cent in younger patients. In older patients it's more like 70 per cent. ... So that's a pretty big turnaround in a couple of decades." These advances in treatment might be partly attributable to the $750 million raised since Fox started his Marathon of Hope, as of January 2018.