3 April 2017 - Newer cancer drugs that enlist the body's immune system are improving the odds of survival, but competition between them is not reining in prices that can now top $250,000 a year.

The drugs' success for patients is the result of big bets in cancer therapy made by Bristol-Myers Squibb, Merck and Roche, among others in big pharma. The industry's pipeline of cancer drugs expanded by 63% between 2005 and 2015, according to the QuintilesIMS Institute, and a good number are reaching the market.

The global market for cancer immunotherapies alone is expected to grow more than fourfold globally to $75.8 billion by 2022 from $16.9 billion in 2015, according to research firm GlobalData.

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