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Brazil CTNBio rejects French GM maize study

The Brazilian national technical commission for biosafety, the CTNBio, appears to be the latest regulator to reject the findings in a French study that claimed Monsanto’s genetically modified glyphosate-tolerant NK603 maize caused cancer in rats. The study was published in September ( Agrow No 649, p 11), and has been followed by calls from 30 entities in Brazil for the product to be withdrawn, Monsanto notes. The commission has reportedly dismissed the calls following its review of the study along with outside rapporteurs in animal and human health. The study “completely” failed, as it evaluated Sprague-Dawley rats, “which spontaneously develop tumours more frequently than other species of rat”. European regulatory bodies including the European Food Safety Authority rejected the findings in the first instance due to flaws in the study’s methodology and missing data ( Agrow No 650, pp 10-11).

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