非小细胞肺癌患者外周血 AEG -1 mRNA 的表达及临床意义

目的：探讨非小细胞肺癌患者外周血AEG-1mRNA的表达情况及其临床意义。方法：收集104例新诊断的非小细胞肺癌患者外周血标本,RT—PCR法检测AEG-1mRNA表达水平,分析其与临床病理特征之间的关系。对其中52例接受含铂方案化疗的晚期患者随访12个月,探讨外周血AEG-1mRNA表达水平与化疗反应率及无进展生存期之间的关系。结果：非小细胞肺癌患者外周血高表达AEG-1mRNA,其表达水平与肿瘤分期（P=0．015）、组织分化程度（P=0．048）和远处转移（P=0．007）密切相关。接受含铂方案一线化疗的52例晚期患者中,AEG-1mRNA高表达者较低表达者对含铂方案化疗反应率低（25．0％VS58．3％,P=0．015）,中位无进展生存期短（5．25VS8．25个月,P=0．019）。结论：非小细胞肺癌外周血AEG-1mRNA高表达提示肿瘤分期晚、组织分化差、转移率高。外周血AEG-1mRNA表达有可能成为晚期非小细胞肺癌患者含铂方案-线化疗的疗效预测和预后因子。     

肝胆胰系肿瘤外周血CD146 mRNA表达与小剂量化疗预后的关系

目的：观察肝胆胰系肿瘤患者外周血中CD146 mRNA表达水平与小剂量化疗预后的关系。方法：RT—PCR方法检测24例肝癌、胆囊（管）癌、胰腺癌患者外周血中CD146 mRNA表达,分为高表达组和低表达组,采用低剂量多西紫杉醇（TXT20mg静滴d1、5、9、13 ）及环磷酰胺（CTX 50mg口服d1-13）方案治疗两周期以上,比较两组治疗的近期临床疗效、临床受益率、生存期。结果：小剂量化疗的临床控制率为75．0％,临床受益率为58．33％,中位生存时间11．5个月,1年生存率45．81％。CD146 mRNA高表达组的中位生存期为11个月,1年生存率41．67％;CD146 mRNA低表达组的中位生存期12个月,1年生存率50．0％,两组比较没有统计学差异（P〉0．05）,CD146的表达与总生存时间之间没有相关性（P=0．513）。结论：肝胆胰系肿瘤患者外周血中CD146 mRNA表达可能不能成为小剂量化疗的预后预测因子;小剂量化疗能提高肝胆胰系肿瘤治疗的临床控制率,改善临床受益,延长生存期,而无明显的不良反应。     

GSTP1、MRP mRNA表达与胃癌辅助化疗预后的关系

[目的]探讨谷胱甘肽S转移酶（GST）P1、多药耐药相关蛋白（MRP）mRNA表达与胃癌铂类药物辅助化疗预后的关系。[方法]经病理学确诊的胃癌患者66例，采用5-Fu／铂类药物为主的方案进行辅助化疗。采用反转录-聚合酶链反应（RT—PCR）检测胃癌组织中GSTP1和MRP mRNA表达水平。[结果]66例胃癌患者中，MRP和GSTP1 mRNA的表达水平中位值分别为1．214和0．434。GSTP1 mRNA高表达组无复发生存率和总生存率均显著低于低表达组（P〈0．05）。调整年龄、性别、分化程度、淋巴结状态、分期后，多因素分析结果显示GSTP1 mRNA水平是影响患者预后的独立危险因素（P〈0．05），而MRP表达水平与预后无关（P〉0．05）。[结论]GSTP1 mRNA表达水平可以在一定程度上判断术后胃癌患者接受铂类药物化疗后的预后。     

诱导化疗联合三维适形放疗治疗48例局部晚期非小细胞肺癌

[目的]评价诱导化疗加三维适形放射治疗（3DCRT）治疗局部晚期非小细胞肺癌（NSCLC）的疗效及毒副反应。[方法]经病理学或细胞学确诊的78例局部晚期NSCLC患者随机分为单纯3DCRT治疗组（RT组，30例）和诱导化疗与3DCRT联合治疗组（CMT组，48例）。CMT组在3DCRT治疗前给予2～4个周期以铂类药物为主的静脉化疗。[结果]全组中位生存期12．5个月，CMT组中位生存期15个月，RT组中位生存期10个月（P=0．453）。1年生存率CMT组为70．8％，RT组为43．3％（P=0．016）：2年生存率CMT组为37．5％，RT组为26．6％（P=0．323）。两组毒副反应相似，化疗的毒副反应患者能耐受。[结论]诱导化疗加三维适形放疗治疗晚期NSCLC可延长生存期，但并不增加放射副反应。     

诱导化疗联合三维适形放疗治疗48例局部晚期非小细胞肺癌

[目的]评价诱导化疗加三维适形放射治疗（3DCRT）治疗局部晚期非小细胞肺癌（NSCLC）的疗效及毒副反应。[方法]经病理学或细胞学确诊的78例局部晚期NSCLC患者随机分为单纯3DCRT治疗组（RT组，30例）和诱导化疗与3DCRT联合治疗组（CMT组，48例）。CMT组在3DCRT治疗前给予2～4个周期以铂类药物为主的静脉化疗。[结果]全组中位生存期12．5个月，CMT组中位生存期15个月，RT组中位生存期10个月（P=0．453）。1年生存率CMT组为70．8％，RT组为43．3％（P=0．016）：2年生存率CMT组为37．5％，RT组为26．6％（P=0．323）。两组毒副反应相似，化疗的毒副反应患者能耐受。[结论]诱导化疗加三维适形放疗治疗晚期NSCLC可延长生存期，但并不增加放射副反应。     

hENT1 mRNA表达与非小细胞肺癌吉西他滨化疗临床预后的相关性

目的：探讨非小细胞肺癌（NSCLC）石蜡组织中平衡型核苷转运载体（human equilibritive nucleosidetransporter 1,hENT1）mRNA表达水平与接受吉西他滨方案化疗的患者临床病理关系及预后意义。方法：采用实时荧光定量RT-PCR方法检测福尔马林固定-石蜡包埋的非小细胞肺癌组织中hENT1 mRNA表达水平,并比较其表达水平与接受吉西他滨化疗的患者临床病理及生存期之间的关系。hENT1 mRNA表达水平与非小细胞肺癌患者的临床及肿瘤病理特征无相关性。结果：hENT1 mRNA高表达组患者经含吉西他滨方案化疗后中位无进展生存期17.5月、总生存期36月,两组间无进展生存期（P=0.420）、总生存期（P=0.707）。但是从生存曲线分析,hENT1 mRNA高表达的NSCLC患者可能从吉西他滨治疗中获益,可能获得更长无进展生存期的趋势。COX多因素回归分析显示TNM分期与肺癌患者总生存期（P=0.02）、无进展生存期（P=0.008）显著相关。hENT1 mRNA表达水平与非小细胞肺癌肿瘤病理特征无相关性,可能与肿瘤恶性生物学行为无关。结论：hENT1 mRNA的表达水平可能是含吉西他滨药物化疗的NSCLC患者预后的影响因素,肿瘤组织的分期可能是影响NSCLC患者预后的独立预测因素。     

β-tubulin—III基因的表达与长春瑞滨治疗非小细胞肺癌疗效关系的研究

目的：研究非小细胞肺癌（NSCLC）患者肿瘤组织中β-微管蛋白-Ⅲ（[3-tubulin-III）基因的表达与患者对长春碱类药物化疗敏感性的关系，为患者选择适当的药物治疗提供依据。方法：共入选35例NSCLC患者，随机分入长春瑞滨（NVB）联合顺铂（PDD）或卡铂（CBP）组成NP方案化疗组和吉西他滨（GEM）联合PDD或CBP组成GP方案组，观察两组对化疗的反应；同时以RT—PCR法检测患者病理组织中β-tubulin-III mRNA的表达，以Westernblot检测β—tubulin-III蛋白的含量。结果：NP组19例，GP组16例，两组患者临床特点无明显差别，对化疗总的有效率相似，在NP组内，有效10例，无效9例，有效患者的肿瘤组织中β-tubulin．III mRNA测量值为4．8±1．9，而无效患者为15．8±8．0，两者有显著性差异（P〈0．01）；有效患者β-tubulin．III蛋白的测量值为3．7±1．5，无效患者为13．5±6．2（P〈0．01）。GP组7例无效，9例有效，有效与无效患者肿瘤组织中β-tubulin-III mRNA和β-tubulin-III蛋白表达均无显著性差异（P〉0．05）。结论：NSCLC患者肿瘤组织中β—tubulin-III基因的表达与患者对长春碱类药物的敏感性有关，β—tubulin-Ⅲ基因高表达，提示对长春碱类药物的敏感性低，宜换用其他药物治疗。     

非小细胞肺癌患者骨髓CK19和LUNX mRNA的实时荧光定量检测和意义

目的：检测非小细胞肺癌患者CK19mRNA和LUNXmRNA的表达情况，探讨其作为微转移检测分子标志物的可行性．方法：选择初治的非小细胞肺癌（NSCLC）患者62例，以肺部良性疾病10例作为对照组，采用实时荧光定量逆转录聚合酶链反应（FQ—RT—PCR）和普通RT—PCR技术，检测肺癌、良性病变肺组织和骨髓的CK19mRNA和LUNXmRNA的表达。结果：肺癌和良性病变肺组织RT—PCR检测结果显示CK19mRNA和LUNXmRNA表达阳性率为100％：62例NSCLC患者骨髓标本FQ—RT—PCR检测结果显示，NSCLC患者中骨髓CK19mRNA表达阳性率45．2％（28／62），明显高于肺良性病变组10％（1／10）（P=0．037），NSCLC组骨髓LUNXmRNA表达阳性率38．7％（24／62）明显高于肺良性病变组0％（0／10）（P=0．017）；骨髓CK19mRNA表达阳性率随病理分期升高，接近统计学意义（P=0．06），而与病理类型、肿瘤分化程度无关；骨髓LUNXmRNA表达阳性率随分期升高且有统计学意义（P=0．02），而与病理类型、肿瘤分化程度无关：骨髓CK19mRNA和LUNXmRNA表达明显相关（P〈0．001）结论：CK19mRNA和LUNXmRNA可作为检测非小细胞肺癌患者微转移特异、敏感的分子标志物，可能有助于早期诊断肺癌转移，从而指导临床分期和治疗、     

ERCC1和 TS 表达对胃癌术后患者改良FOLFOX7方案辅助化疗疗效的预测

目的：探讨切除修复交叉互补基因（ ERCC1）和胸苷酸合成酶（ TS） mRNA在胃癌标本中的表达及其对改良FOLFOX方案辅助化疗疗效的预测。方法采用实时荧光定量PCR法检测73例胃癌根治术患者病变组织中ERCC1和TS mRNA的表达情况,患者均行改良FOLFOX方案辅助化疗,分析ER-CC1和TS两者表达相关性及两者对改良FOLOFX方案辅助化疗疗效的预测。结果胃癌组织中ERCC1高表达率为42．5％（31/73）,TS高表达率为61．6％（45/73）。 ERCC1和TS的表达与患者临床特征无相关性,且两者表达无关联性。在本研究中ERCC1低表达的患者中位RFS和MST分别为16个月和27个月,ERCC1高表达患者分别为9个月和16个月,两组中位RFS 和MST 差异均具有统计学意义（ P＝0．000,P＝0．002）。 TS高表达和 TS低表达患者中位RFS,MST 差异均无统计学意义（P＝0．10,P＝0．71）。结论胃癌患者ERCC1的表达水平可以预测FOLFOX辅助化疗方案的疗效,即ERCC1低表达的患者会从中受益。     

ERCC1蛋白在老年晚期非小细胞肺癌组织中的表达及临床意义

目的：探讨切除修复交叉互补基因1（ERCC1）在老年晚期非小细胞肺癌（NSCLC）组织中的表达情况及其临床意义。方法采用免疫组化法检测76例老年晚期NSCLC患者肿瘤组织中ERCC1的表达水平。结果76例老年晚期非小细胞肺癌组织中ERCC1蛋白表达阳性率为36．84％,与患者性别、病理类型、分化程度、临床分期及吸烟指数无关;ERCC1表达阳性组化疗有效率（17．86％）低于阴性组（43．75％）,差异有统计学意义（P＜0．05）;ERCC1表达阳性组中位生存期（MST）（10个月）短于阴性组（14个月）,但差异无统计学意义（P＞0．05）。结论 ERCC1蛋白表达水平是铂类药物化疗疗效的一个预测指标,有助于非小细胞肺癌个体化化疗方案的制定。     

乳腺癌耐药蛋白表达与晚期非小细胞肺癌铂类为主的化疗疗效及预后的关系

目的探讨乳腺癌耐药蛋白（BCRP）表达与晚期非小细胞肺癌（NSCLC）以铂类为主的化疗疗效及预后的关系。方法回顾性分析本院初治的B或期NSCLC患者86例,应用免疫组化方法检测每位患者肿瘤标本中的BCRP表达水平,应用SPSS 16.0进行统计分析,探讨BCRP表达水平与化疗疗效、无进展生存期（PFS）以及总生存期（OS）的关系。结果BCRP表达阴性患者的化疗有效率为44.0%,而表达阳性的患者为19.4%,两者之间差异有统计学意义（P=0.017）。BCRP表达阴性患者的PFS及OS较表达阳性的患者长,并且差异有统计学意义（P值分别为0.000和0.000）。多因素分析表明BCRP是独立影响PFS及OS的指标。结论BCRP表达水平与晚期NSCLC以铂类为主的化疗疗效及预后密切相关,对于进一步研究晚期NSCLC耐药机制,制定个体化治疗方案,延长患者生存期具有重要意义。     

Breast cancer resistance protein impacts clinical outcome in platinum-based chemotherapy for advanced non-small cell lung cancer.

PURPOSE: The purpose of this study was to investigate the relationship between the level of expression of ATP-binding cassette (ABC) transporter proteins, and response to chemotherapy and prognosis in advanced non-small cell lung cancer (NSCLC). EXPERIMENTAL DESIGN: Expression of ABC transporter proteins, including P-glycoprotein, multidrug resistance protein (MRP) 1, MRP2, MRP3, and breast cancer resistance protein (BCRP), was examined immunohistochemically in 72 formalin-fixed tumor samples from untreated stage IIIB or IV NSCLC patients. All of the patients received platinum-based chemotherapy. Response to chemotherapy, progression-free survival (PFS), and overall survival were compared in relation to expression of each of the ABC transporter proteins and clinicopathological factors. RESULTS: Expression of P-glycoprotein, MRP1, and MRP3 was not significantly associated with response to chemotherapy or survival. MRP2 expression was associated with overall survival (P = 0.002) but not with response to chemotherapy and PFS. By contrast, the response rate to chemotherapy of patients with BCRP-negative tumors was 44%, as opposed to 24% in patients with BCRP-positive tumors. Response rate was lower in BCRP-positive tumors, although this difference was not statistically significant (P = 0.08). BCRP-positive patients had also shorter PFS (P = 0.0003) and overall survival (P = 0.004) than BCRP-negative patients. Multivariate analysis confirmed BCRP status as an independent variable related to PFS (P = 0.001). CONCLUSIONS: Positive immunostaining for BCRP appears to be a predictor of survival in patients with advanced NSCLC. These findings indicate that BCRP may serve as a molecular target for reducing drug resistance to chemotherapy in advanced NSCLC patients.     

核苷酸切除修复交叉互补基因1 mRNA表达与非小细胞肺癌铂类化疗患者预后的相关性

目的 探讨核苷酸切除修复交叉互补基因1(ERCC1)mRNA表达与非小细胞肺癌(NSCLC)铂类化疗患者临床病理特征的关系及其预后意义.方法 采用实时荧光定量逆转录聚合酶链反应(RT-PCR)方法,检测NSCLC石蜡包埋组织中ERCC1 mRNA的表达水平,并比较其表达水平与NSCLC铂类化疗患者临床病理特征和生存时间之间的关系.结果 61例NSCLC患者中,ERCC1 mRNA的中位表达量为0.48.ERCC1 mRNA表达与NSCLC患者临床病理特征无关.ERCC1mRNA低表达(<0.35)患者经铂类药物化疗后的无进展生存时间为14.3个月,而高表达者为8.0个月,差异有统计学意义(P=0.028).ERCC1 mRNA低表达(<0.28)患者的总生存时间为28.4个月,而高表达者为12.9个月,差异有统计学意义(P=0.0064).Cox多因素回归分析显示,ERCC1 mRNA表达水平是影响NSCLC患者预后的独立因素.结论 ERCC1 mRNA的表达水平可以作为以铂类为基础药物化疗的NSCLC患者预后的独立预测因素,ERCC1 mRNA低表达的NSCLC患者经铂类化疗后,总生存时间明显延长,为制定NSCLC个体化的化疗方案提供了重要信息.     

含铂两药方案治疗老年晚期非小细胞肺癌的临床分析

目的 评价老年晚期非小细胞肺癌（NSCLC）患者接受以铂类为基础的两药联合化疗的疗效及安全性。方法 回顾性分析2003年1月至2009年12月北京胸科医院肿瘤内科收治的晚期NSCLC患者115例,年龄≥65岁,均接受以铂类为基础的两药联合一线化疗。具体化疗方案为：顺铂50～60mg／m2或卡铂曲线下面积（AUC）4～5静滴,第1天;紫杉醇135～150mg／m2静滴3～4h,第1天;或长春瑞滨25mg／m2静滴6～10min,第1、8天;或吉西他滨1000mg／m2静滴30min,第1、8天。上述方案3～4周为1个周期。观察并随访治疗疗效及主要不良反应。结果 115例患者中,应用铂类联合紫杉醇方案化疗44例（38.3％）,联合吉西他滨方案31例（27.0％）,联合长春瑞滨方案40例（34.7％）。全组患者的有效率（RR）为26.1％,疾病控制率（DCR）为76.5％,中位无进展生存时间（PFS）为5.5个月,中位总生存时间（OS）为14.0个月,1、2年生存率分别为50％和15％。化疗相关不良反应主要为骨髓抑制,包括白细胞及血小板减少,对症处理后可恢复。按照不同年龄、方案、铂类药物及ECOG评分进行亚组分析,其中不同ECOG评分及铂类药物的中位PFS及OS差异有统计学意义（P＜0.05）。结论 以铂类为基础联合第3代细胞毒性药物的两药方案一线治疗一般状态较好的老年晚期NSCLC的疗效较好,毒副反应可以耐受。     

ERCC1、BAG-1 及 BRCA1 基因在非小细胞肺癌中的表达及其与预后的关系

目的 探讨ERCC1、BAG-1和BRCA1基因mRNA在接受以铂类为基础辅助化疗的非小细胞肺癌（non-small cell lung cancer,NSCLC）患者中的表达情况及其与预后的关系。方法 85例NSCLC患者中74例给予以铂类为基础的术后辅助化疗,采集全组患者的肿瘤组织和其中34例患者的癌旁组织,应用半定量RT-PCR法,检测其ERCC1、BAG-1和BRCA1基因mRNA的表达情况,回顾性分析患者的临床病理资料,探讨3个基因的表达与患者总生存期（OS）之间的关系。结果 ①ERCC1、BAG-1阴性表达的患者OS显著长于阳性表达的患者（P均=0.001）。ERCC1、BAG-1阴性表达的患者接受铂类化疗的疗效显著优于阳性表达的患者（P=0.002、P=0.001）。②BRCA1阴性表达的患者OS长于阳性表达的患者,但差异无统计学意义（P=0.057）。③多因素分析显示ERCC1、BAG-1可作为NSCLC患者接受铂类化疗的预后指标（P=0.027、P=0.022）。结论 检测ERCC1和BAG-1的表达可作为指导NSCLC患者术后接受铂类化疗及预后评估的指标。     

Caveolin-1 expression is significantly associated with drug resistance and poor prognosis in advanced non-small cell lung cancer patients treated with gemcitabine-based chemotherapy

Caveolin-1 was up-regulated in different drug-resistant cancer cell lines and was suggested to confer drug resistance by different mechanisms. However, the relation of caveolin-1 expression and the clinical response to chemotherapy and prognosis in non-small cell lung cancer (NSCLC) remains unknown. Total 73 NSCLC (stages IIIB and IV) patients who received gemcitabine-based chemotherapy and also had tumour specimens available before treatment were assessed for caveolin-1 expression using immunohistochemistry. Immunoreactivity of caveolin-1 was correlated with the response to chemotherapy, the clinicopathologic features, and the progression-free survival (PFS) and overall survival (OS) of all patients. Positive caveolin-1 immunostaining was found in 12 (16.4%) of the 73 patients. Eight of the twelve had disease progression and the other four patients remained stable after chemotherapy. Patients with caveolin-1 expression had a significantly lower response rate (complete or partial response, 0% versus 37.7%; P=0.01) and a poor PFS and OS (median survival time: PFS, 4.6 months versus 6.1 months, P=0.005; OS, 7.0 months versus 14 months, P<0.001) than those without caveolin-1 expression. Moreover, multivariate analyses indicated that caveolin-1 positivity was an independent prognostic factor for disease-free survival (DFS) (P=0.003) and OS (P=0.008), respectively. Caveolin-1 expression significantly correlated with drug resistance and a poor prognosis in advanced NSCLC patients treated with gemcitabine-based chemotherapy.     

NRP1表达与晚期非小细胞肺癌一线含铂方案化疗敏感性及预后的相关性分析

背景与目的：神经菌毛素-1(neuropilin-1,NRP1)作为血管内皮生长因子(vascular endothelial growth factor,VEGF)受体,在肿瘤新生血管形成和肿瘤细胞迁移中发挥重要作用。本研究目的是探索NRP1表达与晚期非小细胞肺癌(non-small cell lung cancer,NSCLC)含铂一线化疗敏感性及预后的相关性。方法：应用免疫组织化学法检测104例一线应用含铂双药方案化疗的晚期NSCLC肿瘤组织中NRP1表达,采用χ2检验及Logistic回归模型分析NRP1表达与化疗反应率的关系。采用Kaplan-Meier和Cox比例风险回归模型分析NRP1表达对生存期的影响。结果：在104例患者中,56例(53.8%)出现NRP1高表达。NRP1高表达与年龄、性别、组织类型、分化程度、行为状态和化疗方案等临床病理因素无关。NRP1低表达患者的化疗反应率高于高表达患者(43.8%vs 23.2%,P=0.026)。Logistic多因素分析结果显示,NRP1表达为化疗反应率的独立预测因素(OR=3.103,95%CI：1.320~7.290,P=0.009),NRP1低表达患者较高表达患者具有更长的无进展生存期(4.6个月vs 3.0个月,χ2=11.273,P=0.001)和总生存期(11.5个月vs 9.2个月,χ2=14.392,P=0.000),NRP1高表达是晚期NSCLC化疗反应率及总生存期的独立预测因素。结论：NRP1高表达与晚期NSCLC一线含铂联合化疗反应率和生存期相关,NRP1表达可能是预测晚期NSCLC化疗敏感性和预后的生物标志物。     

Genetic variants of NBS1 predict clinical outcome of platinum-based chemotherapy in advanced non-small cell lung cancer in Chinese

Objective: NBS1 plays a key role in the repair of DNA double-strand break (DSB). We conducted this study to investigate the effect of two critical polymorphisms (rs1805794 and rs13312840) in NBS1 on treatment response and prognosis of advanced non-small cell lung cancer (NSCLC) patients with platinum-based chemotherapy. Methods: Using TaqMan methods, we genotyped the two polymorphisms in 147 NSCLC patients. Odds ratios (ORs) and their 95% confidential intervals (CIs) were calculated as a measure of difference in the response rate of platinum-based chemotherapy using logistic regression analysis. The Kaplan-Meier and log-rank tests were used to assess the differences in progression-free survival (PFS) and overall survival (OS). Cox proportional hazards model was applied to assess the hazard ratios (HRs) for PFS and OS. Results: Neither of the two polymorphisms was significantly associated with treatment response of platinum-based chemotherapy. However, patients carrying the rs1805794 CC variant genotype had a significantly improved PFS compared to those with GG genotype (16.0 vs. 8.0 months, P = 0.040). Multivariable cox regression analysis further showed that rs1805974 was a significantly favorable prognostic factor for PFS [CC/CG vs. GG: Adjusted HR = 0.62, 95% CI: 0.39-0.99; CC vs. CG/GG: Adjusted HR = 0.56, 95% CI: 0.32-0.97). Similarly, rs13312840 with a small sample size also showed a significant association with PFS (CC vs. CT/TT: Adjusted HR = 25.62, 95% CI: 1.53-428.39). Conclusions: Our findings suggest that NBS1 polymorphisms may be genetic biomarkers for NSCLC prognosis especially PFS with platinum-based chemotherapy in the Chinese population.     

Excision repair cross-complementation group 1 predicts progression-free and overall survival in non-small cell lung cancer patients treated with platinum-based chemotherapy

Expression of excision repair cross-complementation group 1 (ERCC1), p53, or thioredoxin (TRX) is reported to be correlated with resistance to platinum-based drugs. The authors evaluated whether ERCC1, p53, or TRX expression could predict progression-free and/or overall survival in relapsed non-small cell lung cancer (NSCLC) patients treated with platinum-based chemotherapy. Immunohistochemistry was used to examine the expression of these three proteins in resected lung tumor samples obtained from 67 patients treated with platinum-based chemotherapy against recurrent tumors after curative resection. Immunostaining for ERCC1, p53, and TRX was positive in 29, 35, and 24 patients, respectively. Patients negative for ERCC1 had a significantly longer median progression-free (44 vs 26 weeks, P = 0.0075) and overall (73 vs 44 weeks, P = 0.0006) survival than those positive for ERCC1. Patients negative for p53 expression had a significantly longer median overall (70 vs 62 weeks, P = 0.0289), but not progression-free (37.5 vs 36 weeks, P = 0.2465), survival than those positive for p53 expression. From multivariate analysis, negative ERCC1 expression (hazard ratio [HR] = 1.3740, P = 0.0147) was a significantly favorable factor for progression-free survival, and negative ERCC1 expression (HR = 1.6533, P = 0.0018) and better performance status (HR = 1.9117, P = 0.0017) were significantly favorable factors for overall survival. This retrospective study indicates that immunostaining for ERCC1 may be useful for predicting survival in NSCLC patients receiving platinum-based chemotherapy against recurrent tumors after curative resection and can provide critical information for planning personalized chemotherapy.