FCGR3A and systemic lupus erythematosus: For example, systemic lupus erythematosus is associated with the same FCGRIIA-131R, FCGRIIIA-158F and FCGRIIIB-NA2 alleles, whereas relapses in Wegener's granulomatosis are associated with FCGRIIA-131R and FCGRIIIA-158F alleles [40].