,55,57, 58, 59 These findings coupled with those of multiple other studies showing that biomarkers of immune dysregulation such as serum levels of chemokine (C-X-C motif) ligand 13 (CXCL13) and chemokine ligand 18 (CCL18) can predict pulmonary fibrosis progression reliably.60 Here, CXCL13 is linked to pulmonary fibrosis.