AUTHOR=Minder Anna-Elisabeth , Granata Francesca , van Breemen Franziska , Schneider-Yin Xiaoye , Minder Elisabeth I. , Saleh Lanja , Barman-Aksözen Jasmin TITLE=Long-term iron supplementation in four patients with X-linked erythropoietic protoporphyria: associations with serum proteins and erythrocyte protoporphyrin levels—a single-centre retrospective study JOURNAL=Frontiers in Molecular Biosciences VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2025.1509803 DOI=10.3389/fmolb.2025.1509803 ISSN=2296-889X