For all those who were waiting with bated breath for the first ever Human Embryonic stem cell (HESC) phase I clinical trials to begin, well there’s good news. On the 30th of July 2010, the US based Geron Corporation announced the FDA’s approval to its HESC based clinical trials in humans. The announcement comes after a year-long set-back to the proposed trials, after the company discovered during some of its tests that the rats treated with the stem cell line developed cysts. This set off a spate of further tests to ensure efficacy and safety of the therapy. After a year, the company seems to have effectively allayed fears of tumorigenicity and has obtained a green signal from the US FDA and will be beginning the first human trials of Human Embryonic stem cell therapy in the world.

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