Additionally, key genes—PPIB (also known as cyclophilin B) in the collagen biosynthesis cluster, FBLN1 (also as fibulin-1) in the cluster molecules associated with elastic fibers and, F11r.1 (also as JAMA) in the leukocyte cell–cell adhesion cluster—were selected based on their known function in virus infection. Here, FBLN1 is linked to viral infectious disease.