Original Article
Relationship between XPD 751 single nucleotide polymorphism and mFOLFOX6 chemotherapy efficacy and prognosis after colon cancer surgery
Qiao Qing, Liu Juan, Wang Aixin, Yu Danfei, Gou Fusheng, Lin Zhiyu, Leng Zhengwei
Published 2020-04-01
Cite as Chin Arch Gen Surg(Electronic Edition), 2020,14(02): 103-106. DOI: 10.3877/cma.j.issn.1674-0793.2020.02.006
Abstract
ObjectiveTo investigate the relationship between single nucleotide polymorphism of DNA repair gene XPD 751 and the efficacy and prognosis of mFOLFOX6 chemotherapy after colon cancer surgery.
MethodsFrom June 2013 to June 2015, one hundred and five patients with colon cancer who underwent radical operation in People’s Hospital of Leshan City were prospectively selected as colon cancer group and 100 healthy persons as control group. Single nucleotide polymorphism and genotype distribution at XPD 751 locus was detected by DNA sequencing. The efficacy was evaluated at 6 months after mFOLFOX6 chemotherapy. Kaplan-Meier method and multivariate Cox regression were used to analyze the relationship between the polymorphism of the XPD 751 locus and the prognosis of patients.
ResultsThe disease control rate (DCR) of patients with XPD 751 AA genotype in colon cancer group was 86.44% (51/59), significantly higher than 65.22% (30/46) of CA/CC genotype (χ2=6.603, P<0.05). The 3-year overall survival rate and disease-free survival rate of the 105 patients were 69.52% and 29.52% respectively, and the AA genotype were 77.97% and 47.46%, higher than 58.70% and 6.52% of CA/CC genotype (χ2=4.712, 20.817, P=0.030, <0.01). The frequency of recurrence and metastasis in patients with AA genotype was significantly lower than that with CA/CC genotype (30.51% vs 52.17%, χ2=5.055, P=0.025). TNM staging and XPD 751 CA/CC genotype were risk factors for overall survival in patients with colon cancer (P=0.008, 0.017).
ConclusionsColon cancer patients with XPD 751 CA/CC genotype show poor sensitivity to mFOLFOX6 chemotherapy, low disease-free survival rate and overall survival rate after radical operation. Detection of XPD 751 gene polymorphism is helpful to evaluate the efficacy and prognosis of chemotherapy in patients with colon cancer.
Key words:
Colonic neoplasms; Excision repair cross complementing gene 2; Polymorphism, single nucleotide; Chemotherapy
Contributor Information
Qiao Qing
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Liu Juan
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Wang Aixin
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Yu Danfei
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Gou Fusheng
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Lin Zhiyu
Department of Oncology, People’s Hospital of Leshan City, Leshan 614000, China
Leng Zhengwei
Department of General Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong 637099, China