We first identified the pathways that were common to all three granulomatous diseases using the gene list with all the DEG (250), cytokine-cytokine receptor interaction, chemokine signaling, VEGFA-VEGFR2 and focal adhesion accounted for the most significant pathways with the most number of proportionally dysregulated genes involved, we then mapped the pathways associated to the genes that were exclusively present in sarcoidosis. The gene discussed is VEGFA; the disease is sarcoidosis.