GMO applications: Tools

In the European Union, the use of genetically modified organisms (GMOs) is regulated through a legal framework. According to EU legislation (Regulation (EC) No 1829/2003, Regulation (EU) 503/2013 and Directive 2001/18/EC), GMOs can only be authorized for placing on the EU market following a scientific assessment of any risks that they may pose to human and animal health and the environment.

An integral part of such scientific assessment is the evaluation of field trials performed for the comparative assessment of the compositional, agronomic and phenotypic characteristics of GM plants. In 2009,  EFSA’s GMO Panel adopted an opinion on Statistical considerations for the safety evaluation of GMOs to provide detailed guidance on the performance of such field trials and their statistical analysis. The principles, concepts and data requirements presented in the above mentioned opinion are endorsed in the GMO Panel's Guidance for risk assessment of food and feed from genetically modified plants and the more recent implementing Regulation (EU) 503/2013.

To provide further practical assistance for the analysis of comparative data for the risk assessment of GM plants, EFSA, in collaboration with Wageningen UR, has developed a software tool to perform the statistical analysis along with EFSA GMO Panel guidelines and Regulation (EU) 503/2013.

The software allows data entry and data analysis using the latest statistical procedures developed and adopted by EFSA’s GMO Panel for the risk assessment of GM plants. The software conducts a simultaneous analysis of the GM plant compared to its control (test of difference) and non-GM reference varieties (test of equivalence). Moreover different factors can be introduced and analysed.

An output-file listing all the significant differences and the respective equivalence categories is generated by a single click. Additionally, some settings can be changed, according to the specific needs of the analysis being performed.

The software is user-friendly and data can be imported from different sources (e.g. Excel).

Technical requirements

Please refer to the Installation Manual (see below) for detailed instructions on how to set up this software:

The software does not require any license for its installation and utilization by any user.

EFSA welcomes comments which could support improvement of this GMO software tool. Please send your comments at [at]

Food consumption data relevant to applications for GMOs

Applicants can access summary statistics from the EFSA Comprehensive European Food Consumption Database. These statistics allow a quick screening for chronic and acute dietary exposure as required for applications for authorisation of genetically modified plants (Commission Implementing Regulation EU 503/2013).

Summary statistics of consumption data (for chronic and acute consumption) for crops relevant to GMO applications are available in the form of Microsoft Excel files. These statistics contain data for the total population (all subjects/all days) and for consumers only/consumption days only, expressed in grams per day per kilogram of body weight (g/kg bw per day) that have been codified under the first version of the FoodEx food classification system.

The Excel files contain consumption statistics for each relevant crop and all derived food commodities filtered by country, dietary survey and age class. An additional spreadsheet provides information on different factors derived from yield factors and standard recipes (as described in the EFSA technical report on the raw primary commodity – RPC – model). To obtain accurate estimations, these factors should be applied to the consumption data before estimating dietary exposure.

Dietary exposure (chronic and exposure) should be estimated as follows:

  • For the average population, by adding together the dietary exposure from each relevant food. The exposure estimates are obtained by multiplying the average consumption for each food among the total population by the mean concentration of the compound of interest in the GM crop.
  • For high consumers, by adding together the dietary exposure from the dominant food (the food leading to the highest exposure) to the exposure from all the other relevant foods. The exposure estimates are obtained as for the average population except for the dominant food where the 95th percentile consumption in consumers only/consumption days only is used.

The Excel files will be updated as needed (e.g. as new consumption data and/or new information on yield factor/recipes become available). Applicants are advised to regularly check the EFSA website to ensure they are using the most up-to-date data.


Last modified: 13/02/2019