Western Blot analysis from IPF and control groups showed no significant differences in the cytosolic form of LC3B (LC3B I), the lipidated form present mostly on autophagosomes (LC3B II), the LC3B II/I ratio or the p62 protein (Fig. 6a-e and Additional file 4: Figure S3a-b). This evidence concerns the gene SQSTM1 and idiopathic pulmonary fibrosis.