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The results of the feeding studies will be subjected to a peer review process by a high-ranking scientific journal as a quality assurance step. At that step interpretations and conclusions will be limited to the feeding studies. A draft version of the manuscript will also be part of to the stakeholder documents in the stakeholder workshop at the final stage of the project. Another set of journal manuscripts will focus on the general conclusions for GMO risk assessment.


All papers will be put open access and accompanied by a discussion forum in the journal for commenting on these papers. This strategy allows the scientific discussion to continue beyond the lifetime of the Project. Archives of Toxicology, a high-ranking scientific journal, has agreed to go along with this publication strategy. This journal already published a letter describing the three major long term feeding studies with GM plants in the EU: GRACE, GMO90+ and G-TwYST.


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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.