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Study B: 90-day study with 11 and 33% NK603

In February 2018 the results of the suchronic toxicology 90-day animal feeding studies with 11 and 33% GM Maize NK603 in the diet were made available to 35 registered stakeholders who were invited to send written comments. Four sets of comments (Competent Authority, industry, research, and CSO) comprising a total of 17 comments were received. The 17 comments were organised according to categories, sent to relevant G-TwYST experts for responses and anonymized. A draft report is now available here.

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G-TwYST Conclusions & Recommendations

29 April 2018


At a Conference held in Bratislava, Slovakia, on 16 April 2018, G-TwYST presented draft conclusions and recommendations regarding guidance on the design, conduct, interpretation, and analysis of animal feeding studies and their value for GMO risk assessment. A final version of G-TwYST Conclusions and Recommendations can be downloaded here.

Final programme 28/29 March available

18 March 2018

The final programma for the G-TwYST stakeholder consultation workshop on March 28 and 29 in Antwerp is available now and can be downloaded here.


This workshop, which is open for interested stakeholders, will focus on the draft results of a 90-day feeding study with 50% inclusion rate of GM maize NK603, as well as a combined chronic toxicity and carcinogenicity feeding study and the overall draft conclusions. Also included in the scope would be proposed quality criteria for whole-food animal feeding studies, and preliminary conclusions on the scientific value of such studies for GMO risk assessment. An additional agenda item will be insights from an analysis of scientific controversies around animal feeding studies including the GMO case.



Written comments, including from interested parties not able to attend, are welcome, and should be submitted before 6 April. Please, note, due to the tight schedule of the final phase of the project, this will be a firm deadline.