Ⅰ期非小细胞肺癌预后因素的研究

目的 探讨Ⅰ期非小细胞肺癌(NSCLC)的联合预后因素。方法 回顾性分析58例Ⅰ期NSCLC患者的临床资料、术后病理结果和免疫组化技术检测的9项基因表达指标(c-myc、MDM2、c-erbB-2、EGFR、p53、p14^ARF、p16^INK4、p21^WAF1、nm23)。观察患者的总生存率、局部区域性复发率和远处转移率。结果 全组5年生存率、局部区域性复发率和远处转移率分别为71．1％,11．1％和33．5％。单因素分析结果表明,肿瘤细胞的低分化是影响总生存率的不良预后因素(P=0.028);c—myc与c-erbB-2的高表达均为影响总生存率和远处转移率的不良预后因素;促进肿瘤增殖基因总分组的高分值(P=0．041)与综合肿瘤基因组的高分值(P=0．006),是总生存率的不良预后因素。多因素分析结果表明,肿瘤细胞的分化程度与综合肿瘤基因的联合表达,是影响总生存率的独立预后因素。本组结果还显示,已行化疗的高危组患者,其总生存率与无远处转移率均优于未行化疗者,但差异尚未见有显著性。结论 肿瘤细胞的分化程度与综合肿瘤基因的表达,可能是Ⅰ期NSCLC的预后因素。高危组患者进行术后化疗似有提高疗效的趋势。

Study of prognostic factors in patients with stage I non-small cell lung cancer

OBJECTIVE: To analyze the prognostic factors in patients with stage I non-small cell lung cancer (NSCLC). METHODS: Fifty-eight patients with stage I NSCLC treated from 1991 to 1995 were retrospectively reviewed. The clinical features, histopathology and prognostic factors were analyzed by SPSS10.0 statistic software. The expression of c-myc, MDM2, c-erbB-2, EGFR, p53, p14(ARF), p16(INK4), p21(WAF1) and nm23 was detected by immunohistochemical assay. The overall survival rate, local-regional control rate and distant metastasis rate were observed. RESULTS: The overall survival rate, local-regional recurrent rate and distant metastasis rate were 71.1%, 11.1% and 33.5%, respectively. In univariate analysis, tumor cell differentiation was an independent prognostic factor (P = 0.028); overexpression of c-myc or c-erbB-2 had significantly poor overall survival and high distant metastasis rate (P < 0.05). The total oncogene immunoreactive score (IRS) and comprehensive IRS were associated with poor overall survival. In multivariate analysis, tumor cell differentiation and comprehensive IRS were independent prognostic factors for overall survival. Among the high-risk group of patients, those who had received chemotherapy seemed to have a higher overall survival rate and a lower distant metastasis rate in this study, but the difference was not statistically significant. CONCLUSION: For stage I NSCLC patients, tumor cell differentiation and comprehensive IRS are independent prognostic factors for overall survival. Adjuvant chemotherapy might somehow improve the survival for the patients with high-risk factors.