An experiment at the University of Pennsylvania resulted in the death of the patient, Jesse Gelsinger, in late 1999. Then another gene therapy experiment in France generated leukemia in several patients - and the protocols were stopped immediately.
但基因治疗走进了死胡同。宾夕法尼亚大学的试验疗法导致了病人的死亡，病人名叫Jesse Gelsinger，死亡时间：1999年下半年。而后法国进行的试验又导致若干病人患上了白血病，于是试验许可协议遭到了即刻中止的厄运。