The jury is still out. Not that I am saying bad science was NOT used, but there are $billions are vested in disproving the study. But, more than this, there is plenty of good evidence that GMOs are seriously BAD for health and environment. Much of this info can be found via my tags. Unfortunately, my gm / gmo and related tags are not very coordinated, though.
France launches enquiry - http://www.telegraph.co.uk/science/science-news/9553423/GM-crop-enquiry-launched-by-French-government.html