Inflammation, NLRP3 activation, Pro-inflammatory cytokines and proteases upregulating, Apoptosis, Angiogenesis, Antigen processing and presentation, ECM and BM proteolysis, Decorin degradation, Proteoglycan 4 degradation, PAR2 cleavage, FKN cleavage, Tuberculosis, COPD, Cardiovascular diseases, Atherosclerosis, Cystic fibrosis (CF), Sjögren’s syndrome, Idiopathic pulmonary fibrosis, Lupus, Obesity, Pain, Cancer, Arthritis, Neuropathy. This evidence concerns the gene PRG4 and obesity due to melanocortin 4 receptor deficiency.