We are deeply saddened to learn of the passing of Prof. Marcus Maurer, a highly esteemed expert and cherished member of the touchIMMUNOLOGY faculty. Prof. Maurer had been missing for several weeks following a hiking expedition in the mountains, and his loss is felt profoundly by all who knew him. Our hearts and deepest sympathies are with his family and close friends during this difficult time. His guidance, expert insights, and contributions to our platform have been invaluable. We feel privileged to have worked alongside someone whose groundbreaking work has made a significant impact on dermatology and immunology.