A pretty startling finding

In the current edition of Harper's, in the "Findings" section on the last page, is this statement:

Canadian researchers have discovered that dichloroacetate, or DCA, a cheap simple drug that has been used for years to treat metabolic disorders, also happens to kill almost all cancers; unfortunately, DCA is not patented, which means that most pharmaceutical companies will have little interest in carrying out clinical trials using the drug.