Purpose definition as a crucial step for determining the legal basis under the GDPR: implications for scientific research.

"FUNDING Work of RB was supported by the European Union’s Horizon 2020 research and innovation programme Coordination and Support Action ‘Beyond 1 Million Genomes (B1MG)’ (grant agreement no. 951724) and the European Union’s Digital Europe Programme project ‘Genomic Data Infrastructure (GDI)’ (grant agreement no. 101081813). Work of DC was supported by the European Union’s Horizon 2020 research and innovation programme Coordination and Support Action HealthyCloud (grant agreement no. 965345) and the Innovative Medicines Initiative 2 Joint Undertaking Research and Innovation Action European Platform for Neurodegenerative Diseases (EPND, grant agreement no. 101034344). Work of FMG was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) — NFDI 1/1 ‘GHGA — German Human Genome-Phenome Archive’ and by the German Federal Ministry of Education and Research, Project TrustDNA (Grant Number: 16DTM108A)."