IARC recently upgraded the classification of glyphosate to 2A. In the following article in Nature, it is noted that IARC rejected studies of glyphosate submitted by industry. It is not stated if the industry studies were conducted by CROs.
http://www.nature.com/news/widely-used-herbicide-linked-to-cancer-1.17181
However, the more interesting question, is, if industry funded studies (whether for new pesticides, food additives or drugs) are not considered reliable, then, if not industry, who should be expected to conduct and pay for these studies to support new products?