CEBPD and idiopathic pulmonary fibrosis: This is in line with a recentintegrated genomic analysis in which C/EBPδ was identified as a transcriptionfactor that was downregulated in IPF and was associated significantly withgenes/pathways involved in fibrosis [10].Although this association is noteworthy, the most important finding of our study isthat the progression of fibrosis is similar in wildtype and C/EBPδ deficientmice and therefore C/ EBPδ does not seem to play a role in pulmonaryfibrogenesis.