Using Gene Therapy to Defeat Cancer, Hereditary Disease

Gene therapy could potentially allow doctors to cure some of the deadliest types of cancer and rare hereditary diseases with one injection. The FDA recently approved the use of three anti-cancer drugs, all based on genetically modified human cells. Scientists say up to 80 percent of all types of cancer will respond to gene therapy treatments in the future. And that's just the tip of the iceberg, as Daria Dieguts reports.