Blood cancer j:ABCB1 SNP可预测以吉妥单抗治疗的AML患者的预后

2019-07-07 MedSci MedSci原创

吉妥单抗(GO),重组人源化抗CD33抗体与细胞毒性药物卡奇霉素的复合物,再度出现,有望用于AML。卡奇霉素是GO的核心元素,CD33抗体与其结合可促进其吸收,吸收后卡奇霉素则可诱导DNA损伤和细胞死亡。药物运转体PgP-1释放卡奇霉素参与GO反应,现研究人员对ABCB1-SNPs对于GO反应的影响进行评估。将942位随机接受标准疗法额外联合或不联合GO(COG-AAML0531)治疗的患者的基因

吉妥单抗(GO),重组人源化抗CD33抗体与细胞毒性药物卡奇霉素的复合物,再度出现,有望用于AML。卡奇霉素是GO的核心元素,CD33抗体与其结合可促进其吸收,吸收后卡奇霉素则可诱导DNA损伤和细胞死亡。药物运转体PgP-1释放卡奇霉素参与GO反应,现研究人员对ABCB1-SNPs对于GO反应的影响进行评估。

将942位随机接受标准疗法额外联合或不联合GO(COG-AAML0531)治疗的患者的基因组DNA样本进行ABCB1-SNPs检测。

在GO治疗臂中,发现在rs1045642位点上,小T等位基因(CT/TT)的患者的预后要比CC基因型的患者的预后好。与此相反,在No-GO治疗臂中,则位观察到相似的临床结点。将两个治疗臂进行对比时,不同基因型的患者间存在与上述一致的结果。

在体外,通过HL60细胞系进一步验证了rs1045642 T等位基因对卡奇霉素诱导的DNA损伤和细胞活性的影响。

总而言之,本研究表明,在AML患者中,ABCB1 SNPs可影响GO反应,该结果值得进一步进行研究。一旦得以证实,ABCB1-SNPs结合CD33-SNPs或可为GO疗法提供个性化的机会。

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