John McCain's Mark on Medicine

In the few short days since his death, the legacy of Senator John McCain has been examined at length. Its final chapter highlights glioblastoma, the brain cancer that killed him.

The most common form of brain cancer, 14,000 people are diagnosed each year in the US; all but 15% die within 5 years.

David Arons of the National Brain Tumor Society calls it “one of the most complex, drug-resistant, and adaptive cancers there is”—yet the last drug to improve survival was green-lit back in 2005. Scientists lament the slow progress of glioblastoma study where deep divisions remain about the right path for research, Sharon Begley reports.


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