MET and hypersensitivity pneumonitis: Macrophage c-MET expression was increased in non-hypersensitivity pneumonitis conditions, including IPF and CTD-ILD (Fig. S6A, B), while neutrophil c-MET expression levels were higher in IPF patients compared to fibrotic HP and CTD-ILD, with no expression detected in non-fibrotic HP (Fig. S6C, D).