Other identified pathways included the pulmonary fibrosis idiopathic signaling pathway in CD4+ T-cells (p = 9.33E − 06), the multiple sclerosis signaling pathway and the IL-15 production pathway in CD8+ T-cells (p = 9.55E − 07 and p = 3.63E − 05, respectively). This evidence concerns the gene IL15 and pulmonary fibrosis.