The following institutions are participating in the PREPARE study:
| Country | Institution(s) | Leader |
| Netherlands | Leiden University Medical Center, Department of Clinical Pharmacy & Toxicology | Dr. Jesse J. Swen |
| Spain | San Cecilio University Hospital, Department of Pharmacy and Department of Cardiology | Dr. Cristina Lucía Davila Fajardo |
| Austria | Medical University of Vienna, Division of Nephrology and Dialysis | Prof. Gere Sunder-Plassmann |
| Greece | University of Patras, Department of Pharmacy | Prof. George P. Patrinos |
| Slovenia | University of Ljubljana | Prof. Vita Dolzan |
| UK | Royal Liverpool University Hospital | Prof. Sir Munir Pirmohamed |
| Italy | Centro di Riferimento Oncologico, National Cancer Institute in Aviano | Dr. Giuseppe Toffoli |