Gene Therapy NPR's David Kestenbaum reports on the first known death in a study of gene implantation. An 18-year-old Arizona man with a rare metabolic disease died in mid-September after undergoing the experimental therapy at the University of Pennsylvania. Experts say the fatality could force changes in the way these experiments are performed and may slow down the advance of so-called "gene-therapy."

Gene Therapy

Gene Therapy

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NPR's David Kestenbaum reports on the first known death in a study of gene implantation. An 18-year-old Arizona man with a rare metabolic disease died in mid-September after undergoing the experimental therapy at the University of Pennsylvania. Experts say the fatality could force changes in the way these experiments are performed and may slow down the advance of so-called "gene-therapy."