As of October 15, 2023, the Polish sites will not be further involved in CEEGOG. The Polish group named PGOG has become so independent and experienced that it no longer needs the support of the CEEGOG office for non-commercial studies. Henceforth, PGOG will manage the involvement of the Polish sites in both commercial and academic trials. We highly appreciate the collaboration with the CEEGOG Polish sites and their representatives so far, and would like to express our huge thanks therefor. We look forward to further cooperation with the Polish sites within clinical research under the PGOG umbrella.