同期放化疗对不同年龄Ⅳ期非小细胞肺癌生存影响——两项前瞻性研究再分析

摘要

Objective To analyze the survival and toxicity after concurrent chemoradiotherapy in patients of different ages with stage Ⅳ non-small cell lung cancer (NSCLC).Methods Clinical data of 282 NSCLC patients in two prospective studies were retrospectively analyzed,who completed the protocol (at least 2 cycles of chemotherapy and thoracic radiation doses of ≥36 Gy).Among them,44 patients were assigned into in the young group (≤ 45 years old),161 patients in the middle-age group (46-64 years old) and 77 patients in the elderly group (≥ 65 years old).The clinical characteristics of patients among different groups were analyzed by x2 test.The overall survival (OS) was calculated by Kaplan-Meier method.Stratified analysis was performed by Log-rank test.Multi-factor prognosis analysis was conducted by Cox's proportional hazards regression model.Results The incidence of NSCLC in the male patients in the elderly group was higher than that in the middle-age and young groups.The 1-,2-,3-and 5-year OS did not significantly differ among different groups (P=0.810).The OS did not significantly differ among patients of the same gender,pathological type,T stage,N stage,metastasis status,same chemotherapy cycle,primary tumor dose and comprehensive treatment and short-term response (all P＞0.05).The incidence of adverse events did not considerably differ among different groups.Multivariate analysis demonstrated that age was not an independent factor for survival (P＞ O.05).Conclusion Patients of different ages with stage Ⅳ NSCLC obtain similar survival benefits and adverse events after concurrent chemoradiotherapy.%目的 探讨同期放化疗模式在不同年龄Ⅳ期非小细胞肺癌(NSCLC)中的生存和不良反应.方法 回顾分析两项前瞻性研究的282例Ⅳ期NSCLC临床资料,其中完成≥2周期化疗同期胸部放疗剂量≥36 Gy;青年组(≤45岁)为44例、中年组(46～64岁)为161例、老年组(≥65岁)为77例.不同年龄组临床特征的差异应用x2检验,Kaplan-Meier法计算生存率并Logrank检验差异和分层分析,Cox模型多因素预后分析.结果 老年病例中男性发病率比中年组和青年组更高.不同年龄组1、2、3、5年总生存(P=0.810);相同性别、病理类型、T分期、N分期、器官转移状态、相同化疗周期、原发肿瘤剂量及相似强度综合治疗模式、近期疗效等总生存均相近(P＞0.05);不同年龄组治疗相关不良反应发生率相似.多因素分析显示不同年龄对生存无影响(P＞0.05).结论 对可耐受同期放化疗综合治疗模式的不同年龄Ⅳ期NSCLC患者,可获得相似的生存利益且不良反应相近.