In AIHA,the basic predominant IgG subclass is IgG 1.IgG 3 has a greater potential for red cell destruction than IgG 1 and C 3d .

• IgG 亚型中以IgG1 ＋IgG3 为主。 IgG3 阳性的患者临床表现及溶血程度严重，治疗效果差