Of 698 peer reviewed science papers on GM food/feed safety, 58 percent have no conflict of interest. Sanchez 2015.

Conflict of interests and evidence base for GM crops food/feed safety research

To the Editor:

I decided to analyze our set of papers for financial COIs—those that arise when research is fully or partially funded by a party with a stake in the development of GM crops; and also for professional COIs—those that arise when at least one author is affiliated with a company developing GM crops, even if the research is supported through public funding...
...In terms of COIs [Conflict of interest], we found that a majority—406 out of 698 reports (58.3%)—have no financial or professional COIs, as the  authors were not affiliated with companies that develop GM crops and also declared that the funding sources did not come from those companies. Overall, 180 out of 698 articles (25.8%) had COIs either in terms of the author affiliation or declared funding source.

Miguel A Sanchez, ChileBio, Santiago, Chile.

In Nature Biotechnology, 33 Number 2. February 2015, page 135-137.