"First Evidence" of Long-Term Safety and Tolerability of Human Embryonic Stem Cell Treatment

Two studies reported in the Lancet offer the "first evidence of the medium-term to long-term" safety and tolerability of using human embryonic stem cells to treat human disease, according to the researchers. In the two phase 1/2 studies, nine U.S. adults with Stargardt macular dystrophy and nine with age-related macular degeneration underwent transplantation with retinal pigment epithelium derived from human embryonic stem cells.

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