Samples were then stratified into 4 sub-groups according to diagnosis at admission to hospital: infectious diseases (n = 42), cancer (n = 16), heart or brain ischemia (n = 10), and others (trauma, autoimmune diseases) (n = 19), and CRP-sP2X7R correlation in the 4 diagnosis sub-groups analyzed (Figure 2). This evidence concerns the gene CRP and infectious disease.