Medicine has come a long way in treating and preventing cancer, but it still remains one of the biggest killers. Lung cancer, which kills almost 1.38 million people a year globally, is among the cruelest.
In India, lung cancer cases have shown the highest spurt among all cancers afflicting men, and there has been an increase among women too. Most patients are diagnosed at an advanced stage and even after punishing chemotherapy, they still have a bleak prognosis.
Bit by bit, though, medical science is making progress and at the frontier of fighting this cancer globally is immunotherapy.
A recent study has shown the immunotherapy drug Pembrolizumab to be twice as effective as chemotherapy.
So what is immunotherapy?