APOA1 and systemic lupus erythematosus: For male patients (Table 2), male MS patients (1.263 ± 0.075 g/L) had significantly higher serum apoA-I levels than male RA patients (0.963 ± 0.102 g/L; P = 0.000), male SLE patients (0.979 ± 0.106 g/L; P = 0.000) and male healthy subjects(1.112 ± 0.070 g/L; P = 0.001) (Figure 2).