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1文献来源Golan T,Hammel P,Reni M,et al.Maintenance Olaparib for germline BRCA mutated metastatic pancreatic cancer[J].N Engl J Med,2019,381(4):317-327.2证据水平1b。3背景一小部分转移性胰腺癌患者具有胚系BRCA1或BRCA2的基因突变。多聚二磷酸腺苷核糖聚合酶(poly adenosine diphosphate ribose polymerase,PARP)抑