Corrections and Clarifications
The table accompanying Larry Thompson's Research News article "At age 2, gene therapy enters a growth phase" (30 Oct., p. 744) incorrectly identified the principal investigators of gene therapy trials to treat kidney cancer and malignant melanoma being conducted at Memorial Sloan-Kettering Cancer Center and of a brain cancer experiment at the National Institutes of Health. The principal investigator of the Sloan-Kettering trials is Bernd Gansbacher, and the brain cancer study is being led by Edward Oldfield of the National Institute of Neurological Disorders and Stroke.