Francesca Lunardi, Luca Vedovelli, Federica Pezzuto, Jerome Le Pavec, Peter Dorfmuller, Marina Ivanovic, Tahuanty Pena, Katharina Wassilew, Michael Perch, Sandrine Hirschi, Marie-Pierre Chenard, Rebecca A Sosa, Martin Goddard, Desley Neil, Angeles Montero-Fernandez, Alexandra Rice, Emanuele Cozzi, Federico Rea, Deborah J Levine, Antoine Roux, Gregory A Fishbein, Fiorella Calabrese
BACKGROUND: Pulmonary antibody-mediated rejection is still a challenging diagnosis as C4d has poor sensitivity. Previous studies have indicated that the phosphorylated S6 ribosomal protein, a component of the mammalian target of rapamycin (mTOR) pathway, is correlated with de novo donor-specific antibodies in lung transplantation. The objective of this study was to evaluate the phosphorylation of S6 ribosomal protein as a surrogate for AMR diagnosis in lung transplant patients. METHODS: This multicentre retrospective study analyzed transbronchial biopsies from 216 lung transplanted patients, 114 with antibody-mediated rejection and 102 without (19 with acute cellular rejection, 17 with ischemia/reperfusion injury, 18 with infection, and 48 without post-transplant complications)...
October 6, 2023: Journal of Heart and Lung Transplantation