基于二代测序技术的胰腺癌胚系变异携带情况及临床因素相关性分析

Detection of germline variants in pancreatic cancer by next-generation sequencing and correlation analysis of clinical factors

目的探讨胚系变异在胰腺癌患者中的携带率及其相关的临床因素。方法纳入271例胰腺癌患者,通过二代测序检测21个肿瘤易感基因的胚系变异,并分析胚系变异与发病年龄、家族史及个人史等临床因素的关系。结果在未经筛选的胰腺癌患者中P/LP胚系变异的携带率为6.3%,遗传高危组(具备肿瘤家族史或个人史或早发性)胰腺癌患者中的携带率高达17.1%。胰腺癌患者中胚系变异频率较高的基因为PALB2、BRCA2和ATM。结论胰腺癌患者中整体胚系变异的携带率不高,但在遗传高危组中显著升高,证明了临床因素在遗传性胰腺癌筛选中的重要性。

Objective To investigate the rate of germline variants in patients with pancreatic cancer and clinical characteristics related with germline variants.Methods A total of 271 patients diagnosed with pancreatic cancer were enrolled in this study.Germline variants of 21 tumor susceptibility genes were detected by next-generation sequencing,and the relationship between germline variants and clinical factors such as age of onset,family history and personal history was analyzed.Results The rate of germline P/LP variants was 6.3%in unselected pancreatic cancer patients,but was high as 17.1%in genetic high-risk group patients(those with a family or personal history of cancer,or early-onset).Genes with higher frequency of germline variants in pancreatic cancer patients were PALB2,BRCA2,and ATM.Conclusion The rate of germline variants in overall pancreatic cancer patients is not high,but it increases significantly in genetic high-risk group,proving the importance of clinical factors in the screening of hereditary pancreatic cancer.