The “Cell adhesion molecules” pathway is exclusive for Myelofibrosis, the “Antigen processing and presentation” is exclusive for SSc and the “IL-17 signaling” is unique for CF. “Fat digestion and absorption”, “PPAR signaling” and “Glycerolipid metabolism” pathways are unique for Dupuytren’s Disease. This evidence concerns the gene PPARA and myelofibrosis.