"Hailed by oncologists as a miracle treatment, the PD-1 drug will be given free to patients with no other options under a special access program by manufacturer Merck Sharp and Dohme, while clinical trials continue.
“Without the drug, I wouldn’t be here - it is absolutely so simple,” Mr Walker said.
MK-3475 is just one of a number of similar immunotherapy drugs in development that use the immune system to fight cancer."
