Abstract

目的探讨BIOMED-2标准化Ig基因重排技术在多发性骨髓瘤(MM)诊治中的应用以及采用PCR片段分析毛细管电泳法(简称毛细管电泳法)进行克隆性检测的意义。方法选取2009年至2013年167例MM患者骨髓标本,以20例反应性浆细胞增多症患者骨髓标本作为对照,采用BIOMED-2系统引物,进行多重PCR扩增并采用毛细管电泳法进行Ig基因重排的克隆性分析。结果①167例MM患者中IgH VH-JH重排阳性者107例,阴性者60例,两组患者中IgH DH-JH重排发生率差异有统计学意义(14.0%对30.0%,P=0.013);121例(72.4%)患者存在IgK重排。IgH VH-JH、IgH DH-JH、IgK联合检查,阳性检出率为94.6%。对照组Ig基因重排检测结果均为阴性。②琼脂糖电泳法结果示167例MM患者中9例(5.4%)患者IgH重排基因克隆性阳性,而毛细管电泳法结果则示为多克隆重排。③53例MM患者同时进行Ig基因重排检测和染色体荧光原位杂交IgH检测,两种方法的IgH阳性检出率差异有统计学意义(67.9%对49.1%,P=0.049)。结论IgH VH-JH、IgH DH-JH、IgK联合检测可大大提高MM患者Ig基因重排克隆性的检出率,尤其对于IgH VH-JH重排阴性者IgH DH-JH重排的补充检测尤为重要。基因重排检测采用毛细管电泳法可有效地区分单克隆、多克隆和寡克隆。Ig基因重排检测较染色体荧光原位杂交技术的IgH阳性检出率高。应用BIOMED-2标准化Ig基因重排技术检测对于MM的诊断有指导意义。

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