The PNHS study succeeded in recruiting 1,321 participants (recruitment was formally ended on 30 April 2022). The final scans were performed in June. The number of prospective scans collected within AMYPAD PNHS is 1,419 (1,192 baseline and 227 follow-up). The non EPAD Parent Cohorts also shared their historical data and therewith the total number of scans in AMYPAD PNHS is over 2700.