As of 2010, it had safely delivered genes into the bodies of more than 600 people (though some of the genes have produced unintended side effects). (scientificamerican.com)
Just seems another program that can have nasty unintended side effects. (ewao.com)
One unintended side effect of Congress's intense efforts to jump - start the U.S. economy is the threat of fraud. (scientificamerican.com)