In contrast, in intensive care unit patients with a diagnosis of invasive Streptococcus pneumoniae infection (202 with pneumonia and 55 with meningitis), the GG genotype (guanine) of the FCGR2A His131Arg polymorphism exerted a protective effect (OR 0.32) [20]. The gene discussed is FCGR2A; the disease is susceptibility to pneumonia measurement.