Tocagen Stock Tanks After Gene Therapy Drug for Brain Cancer Fails

Tocagen’s experimental gene therapy for brain cancer therapy has failed a late-stage test, sinking the biotech’s stock price below $1. San Diego’s Tocagen (NASDAQ: TOCA), has been testing its drug in recurrent high-grade glioma, the most common and deadly type of brain cancer in adults. The company said Thursday that the drug combination, Toca 511 […]

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