showed a trendp = .063
However, a previous study in the Caucasian population (Spain) showed a trend between the FCER1B rs573790-CC genotype (OR = 4.26; 95%CI = 1.01–26.98; p = .063) and a better response in reducing exacerbations. 33 Another author also associated this genotype with asthma and aspirin-exacerbated respiratory disease in a mestizo population (Mexico). 34 The Fc region of IgG enhances drug stability and prolongs its half-life, improving its pharmacokinetics. 35 The Fc region of human IgG1 binds selectively to Fc-gamma receptors (FcγR) on the surface of B lymphocytes, dendritic cells (DCs), and macrophages.