A gene coding for a regulatory protein essential to brain development could also be "gateway" to brain tumor formation; finding could lead to new therapies A new study has found that a regulatory gene that directs stem cells during normal brain development may also play a role in the growth of the most common form of primary brain cancer. Researchers at Harvard Medical School's Dana-Farber Cancer Institute report in this week's issue of Neuron that Olig 2 is apparently a "gateway" gene to formation of malignant brain tumors known as gliomas. They say the discovery could lead to new therapies...