Riley Maclennan with his mum Moira Black. See SWNS story SWSCcancer. A seven-year-old boy was saved from cancer - using stem cells from a babys umbilical cord. Riley Maclennan received the transplant in September 23 last year after the disease came back for a second time. Riley, from Inverness, Highlands, underwent chemotherapy treatment and spent weeks in isolation in Glasgow hundreds of miles away from home. The youngster was just two-years-old when in December 2016, he was diagnosed with Acute Lymphoblastic Leukaemia, a cancer of the white blood cells.