In the same study, GP9 (FA2G1) is attributed the highest predictive value in the analyzed populations, while the authors consider the decrease in galactosylation of IgG and the consequent alteration of the antibodies inflammatory potential as one of the molecular mechanisms involved in systemic lupus erythematosus pathophysiology and/or autoimmunity. The gene discussed is GP9; the disease is systemic lupus erythematosus.