EuMAR: a roadmap towards a prospective, cycle-by-cycle registry of medically assisted reproduction in Europe.

More than 20 years ago, the survey of activities in medically assisted reproduction (MAR) was initiated in Europe and resulted in cross-sectional annual reports, as issued by the European IVF Monitoring (EIM) consortium of ESHRE. Over time, these reports mirror the continuous development of the technologies and contribute to increased transparency and surveillance of reproductive care. Meanwhile, progressive changes of existing treatment modalities and the introduction of new technologies resulted in the need of a cumulative approach in the assessment of treatment outcomes, which warrants a prospective cycle-by-cycle data registry on MAR activities, including fertility preservation. This change in the paradigm of data collection in Europe towards the construction of cumulative outcome results is expected to generate additional insights into cross-institutional but also cross-border movements of patients and reproductive material. This is essential to improve vigilance and surveillance. The European monitoring of Medically Assisted Reproduction (EuMAR) project, co-funded by the European Union, will establish a registry for the transnational collection of prospective cycle-by-cycle MAR and fertility preservation data on the basis of an individual reproductive care code (IRCC). The rationale for the project and the objectives are presented here.