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1.
Background: Cancer of the esophagus and gastro-esophageal junction is a disorder with a poor prognosis and increasing incidence. Objective: To provide a critical evaluation of current treatment strategies and new developments including targeted therapy for esophageal cancer. Methods: Published clinical trials as well as abstracts were selected regarding chemoradiation or targeted therapy for esophageal cancer. Results/conclusions: Preoperative chemotherapy may offer a survival advantage compared to surgery alone, but the evidence is inconclusive. For preoperative chemoradiation, only 2 of 10 randomized trials showed advanced survival compared to surgery alone, and, therefore, more Phase III trials and, consequently, meta-analyses are needed. Until now, for palliative chemotherapy, no survival benefit has been shown. This is largely due to a lack of studies and difficulties in performing randomized trials. The application of targeted therapy is widespread and reported for several tumor types. For esophageal cancer, most studies have been performed with EGFR inhibitors, including cetuximab, gefitinib, erlotinib and trastuzumab. Limited experience is available with angiogenesis inhibitors, apoptosis inhibitors and COX-2 inhibitors. As yet, targeted therapies are proven to be safe often in combination with chemoradiation, but modestly effective for esophageal cancer. Phase III trials have not been published yet and, therefore, for targeted therapies also, possibly using new concepts, more studies are needed.  相似文献   

2.
3.
Preoperative infusional 5-fluorouracil (5-FU) and concurrent radiation therapy (RT) followed by total mesorectal surgery is the current standard of care for locally advanced rectal cancer (LAR). When compared with postoperative 5-FU-based chemoradiation, this strategy is associated with significantly lower rates of local relapse, lower toxicity and better compliance. Capecitabine is a rationally designed oral prodrug that is converted into 5-FU by intracellular thymidine phosphorylase. Substitution of infusional 5-FU with capecitabine is an attractive option that provides a more convenient administration schedule and, possibly, increased efficacy. Indeed, incorporation of capecitabine in combined modality neoadjuvant therapy for LAR has been under intense investigation during the last 10 years. Phase I and II clinical trials showed that a regimen consisting of capecitabine 825mg/m(2) twice daily for 7 days/week continuous oral administration in combination with RT is an active and well tolerated regimen, thereby being the preferred concurrent regimen. The definitive demonstration that efficacy of capecitabine/RT is similar to 5-FU/RT has been provided by the NSABP-R-04 and the German Margit trials. One approach to improve outcomes in rectal cancer is to deliver a second RT-sensitizing drug with effective systemic activity. Oxaliplatin and irinotecan are therefore good candidates. However, two phase III trials demonstrated that incorporation of oxaliplatin to capecitabine with RT did not improve early outcomes and, by contrast, increased toxicity. Capecitabine has also been combined with irinotecan. This regimen showed encouraging results in phase I and II clinical trials, which led to an ongoing phase III clinical trial. New strategies with induction chemotherapy with or without chemoradiation prior to surgery are currently under investigation. Whether or not capecitabine has a role in this setting is being investigated in ongoing trials. Incorporation of agents directed towards new targets, such as anti-epidermal growth factor receptor (EGFR) antibodies or antiangiogenic agents, in combination preoperative regimens, is being hampered by results of early trials in which efficacy outcomes with cetuximab were poor and an excessive rate of surgical complications with bevacizumab was observed. The lack of improvements in efficacy with the addition of cetuximab or bevacizumab in the adjuvant treatment of colon cancer led to concerns about further development of these agents in rectal cancer. The role of capecitabine in the postoperative adjuvant setting is the aim of the ongoing Dutch SCRIPT trial. The prediction of response associated with capecitabine has been based on expression of thymidylate synthase and dihydropyrimidine dehydrogenase, as well as on gene expression arrays. All these procedures require further validation and should be considered as investigational. In conclusion, capecitabine can safely and effectively replace intravenous continuous infusion of 5-FU in the preoperative chemoradiation setting for rectal cancer management. The addition of other new antineoplastic agents to a fluoropyrimidine-based regimen remains investigational.  相似文献   

4.
Recurrent/metastatic head and neck cancer is an area of high, unmet treatment need. There is a strong rationale for targeting the epidermal growth factor receptor (EGFR) in head and neck cancer as most of these tumors express high levels of EGFR relative to normal tissue, with high expression correlating with poor patient outcome. This rationale has been validated in extensive preclinical studies. Two small molecules with EGFR inhibitory activity, gefitinib ('Iressa', ZD1839) and erlotinib ('Tarceva', OSI-774), and a humanized monoclonal antibody against the EGFR extracellular domain, cetuximab ('Erbitux', C225), are in clinical trials for advanced head and neck cancer. The initial results of these trials are promising. Gefitinib and erlotinib show activity as monotherapy in patients with recurrent or metastatic head and neck cancer, and have an acceptable safety profile compared with conventional chemotherapy. Gefitinib, which can be given at doses below the maximum tolerated dose, is associated with slightly lower rates of adverse events than erlotinib, which is dosed at the maximum tolerated dose. Combinations of cetuximab with radiotherapy or platinum-based chemotherapy have also shown activity in phase I/II studies. Both gefitinib and cetuximab have entered phase III studies. The results of these trials, which will mature over the next few years, will help determine the optimal use of EGFR agents in head and neck cancers.  相似文献   

5.
Glynne-Jones R  Kronfli M 《Drugs》2011,71(9):1153-1177
Traditionally, there has been a high local recurrence rate in rectal cancer and 10-40% of patients require a permanent stoma. Both short-course preoperative radiotherapy (SCPRT) and long-course preoperative chemoradiation (CRT) are used to reduce the risk of local recurrence and enable a curative resection. Total mesorectal excision has reduced the rate of local recurrence (even without radiotherapy) to below 10%, but has highlighted a high risk of metastatic disease in 30-40% of patients. Current trials suggest that in resectable cancers, where the preoperative magnetic resonance imaging (MRI) suggests the circumferential resection margin (CRM) is not potentially involved, then SCPRT and CRT are equivalent in terms of outcomes such as local recurrence, disease-free survival (DFS) and overall survival (OS). For patients with more advanced disease, where the CRM is breached or threatened according to the MRI, the integration of more active chemotherapy and biological agents into chemoradiation is an attractive strategy because of the high risk of metastases. However, in none of the trials published in the last decade has chemoradiation impacted on DFS or OS. We examine the strategies of neoadjuvant, concurrent, consolidation (after chemoradiation and before surgery) and postoperative adjuvant chemotherapy with cytotoxic agents, and the integration of biological agents for future potential strategies of treatment. We also compare the trials and compare the different strategies of long-course preoperative radiotherapy and SCPRT; the intensification of preoperative radiation and chemoradiation with dose escalation of external beam radiotherapy, using brachytherapy, intra-operative radiotherapy, hyperfractionation, and various available techniques such as intensity-modulated radiotherapy. We recommend examining dose escalation of radiotherapy to the primary tumour where MRI predicts a threatened CRM. Of the potential treatment strategies involving cytotoxic agents, such as neoadjuvant, concurrent, consolidation and postoperative adjuvant chemotherapy, the most promising would appear to be consolidation chemotherapy following chemoradiation in locally advanced disease, and neoadjuvant chemotherapy in MRI-selected patients who do not require radiation. Improvement in the quality of surgery is also an important future goal.  相似文献   

6.
Cetuximab, its clinical use and future perspectives   总被引:3,自引:0,他引:3  
Increase in the expression of epidermal growth factor receptors (EGFRs) has been observed in many tumours. EGFR overexpression usually correlates with a more advanced stage of the disease, a poorer prognosis and a worse chemotherapy response. For all the aforementioned reasons, EGFR inhibition can be considered an attractive approach in cancer treatment. One strategy has been extracellular domain receptor inhibition, using monoclonal antibodies. In this review, we summarize the current status as well as what is likely to be the future use of monoclonal antibodies directed against EGFR. We have focussed on cetuximab being the most developed one. It has been mainly studied in colorectal cancer, and the major portion of this review will focus on all the research that has been carried out on this tumour. Clinical development of cetuximab is also important in head and neck cancer and in lung cancer. Interesting studies have been carried out in pancreatic, gastric, oesophageal and ovarian tumours, as well as in malignant gliomas.  相似文献   

7.
侣军  张颖莹 《医药世界》2010,(9):980-982
目的探讨术前放化疗对中晚期进展期直肠癌保肛手术的临床价值。方法选取郑州人民医院72例直肠癌患者,随机将患者平均分成两组,观察组患者给予术前新辅助放、化疗,对照组患者同期直接手术。随访分析两组患者保肛率及3a生存率。结果近期疗效上,观察组总有效率明显优于对照组(P〈0.05);远期疗效上,两组3a生存率及术中淋巴结阳性率之间差别均有统计学意义(P〈0.05);两组保肛率差异也有统计学意义(P〈0.05)。结论术前加用放化疗在提高直肠癌患者保肛率的同时,可以提高患者3a生存率和降低淋巴结转移率,减少手术并发症和局部复发率。但其最终结果和远期疗效有待进一步观察和分析。  相似文献   

8.
Colorectal cancer(CRC) is one of the most-diagnosed cancer worldwide, and 30% of patients with CRC have showed a metastatic situation. Monoclonal antibodies(mAbs) that target vascular endothelial growth factor(VEGF) and the epidermal growth factor receptor(EGFR) can achieveantitumor efficacy via antivascular and anticellular effects respectively and have been added into first-line chemotherapy for patients with metastatic colorectal cancer(mCRC). Investigations found that unlike VEGF inhibitors, the efficacy of EGFR inhibitors,such as Cetuximab and panitumumab, is limited to patients with wild-type-KRAS tumors without BRAF mutant. Studies revealed that resistance to EGFR inhibitors result in the poor response to anti-EGFR therapiesthrough acquired mutations of KRAS and BRAF.Considering this situation, in this review, we will focus onresistance mechanism to anti-EGFR therapies and advanced therapies for BRAF-mutated and KRAS-mutated mCRC patients.  相似文献   

9.
The epidermal growth factor (EGFR) and its receptor were discovered nearly 40 years ago. Over the past decade interruption of this pathway has been exploited in the treatment of various solid tumors. Antibodies that interfere with ligand binding to and dimerization of the EGFR (and small molecules that inhibit the EGFR tyrosine kinase) are anti-proliferative, profoundly radiosensitizing, and synergistic with DNA-damaging cytotoxic agents. Proposed mechanisms of radio- and chemosensitization include enhanced apoptosis, interference with DNA repair and angiogenesis, receptor depletion from the cell surface and antibody-dependent cell-mediated cytotoxicity. This article provides a reader with a comprehensive review of EGFR-targeting antibodies under development for the treatment of head and neck squamous cell cancer (HNSCC) and also summarizes relevant clinical data in this disease with small molecule EGFR inhibitors. One of the monoclonal antibodies, cetuximab, recently received full FDA approval for the treatment of patients with locally advanced (with radiation) or metastatic HNSCC (as a single agent). Regulatory approval followed reporting of a large international study in which the addition of cetuximab to definitive radiation therapy in HNSCC resulted in statistically significant improvements in locoregional control and overall survival. Results of the pivotal trial, other clinical data supporting the regulatory approval, and a preview of the next generation of clinical trials are presented. Considerable work remains to be done, particularly to enhance our understanding of factors that may predict for favorable response to EGFR inhibitor therapy and to evaluate the impact of integrating anti-EGFR therapies into complex chemoradiation programs delivered with curative intent.  相似文献   

10.
目的探讨中低位直肠癌术前超分割放疗联合mFOLFOX6方案全身化疗的临床效果。方法选取本院2010年11月~2012年12月诊治的中低位直肠癌患者66例,随机分为两组,术前常规分割放疗联合mFOLFOX6方案全身化疗患者33例为对照组,术前超分割放疗联合mFOLFOX6方案全身化疗患者33例为观察组,比较两组患者治疗前后的肿瘤分期情况、手术切除率、保肛率、骨髓抑制及直肠反应分级情况。结果治疗后,两组患者肿瘤分期均明显改善;观察组肿瘤分期明显优于对照组,差异有统计学意义(P〈0.05)。两组患者的手术切除率、保肛率、骨髓抑制分级和直肠反应分级比较差异无统计学意义(P〉O.05)。结论术前超分割放疗联合mFOLFOX6方案全身化疗是治疗中低位直肠癌的有效方法,可明显改善患者的预后。  相似文献   

11.
The epidermal growth factor (EGF) and its receptor were discovered nearly 40 years ago. Over the past decade interruption of this pathway has been exploited in the treatment of various solid tumors. Antibodies that interfere with ligand binding to and dimerization of the EGFR (and small molecules that inhibit the EGFR tyrosine kinase) are anti-proliferative, radiosensitizing, and synergistic with DNA-damaging cytotoxic agents. Proposed mechanisms of radio- and chemosensitization include enhanced apoptosis, interference with DNA repair and angiogenesis, receptor depletion from the cell surface and antibody-dependent cell-mediated cytotoxicity. This article provides the reader with a comprehensive review of EGFR-targeting antibodies under development for the treatment of head and neck squamous cell cancer (HNSCC) and also summarizes relevant clinical data in this disease with small molecule EGFR inhibitors. One of the monoclonal antibodies, cetuximab, recently received full FDA approval for the treatment of patients with locoregionally advanced (with radiation) or metastatic HNSCC (as a single agent). Regulatory approval followed reporting of a large international study in which the addition of cetuximab to definitive radiation therapy in HNSCC resulted in statistically significant improvements in locoregional control and overall survival. Results of the pivotal trial, other clinical data supporting the regulatory approval, and a preview of the next generation of clinical trials are presented. Considerable work remains to be done, particularly to enhance our understanding of factors that may predict for favorable response to EGFR inhibitor therapy and to evaluate the impact of integrating anti-EGFR therapies into complex chemoradiation programs delivered with curative intent.  相似文献   

12.
Adjuvant therapy for colorectal cancer includes chemotherapy, radiotherapy and immunotherapy. It is advocated in patients who are at significant risk of developing recurrence. We review recent advances in adjuvant treatment for colorectal cancer. Although colorectal cancer is often considered as a single entity, it is being increasingly recognised that colon and rectal cancers are distinct disease groups and separate therapeutic strategies should be considered for each. In colonic cancer, 5-fluorouracil is used, with or without other agents. Both preoperative radiotherapy and postoperative chemoradiotherapy have been used in rectal cancer. The development of oral chemotherapeutic agents has been a significant step in the management of colorectal cancer, while newer agents have been introduced with good results. Targeting the immune response and genetic manipulations are being developed as innovative management strategies. Although adjuvant therapy has improved outcome in colorectal cancer, stress should be laid on identifying patients who need adjuvant therapy, permitting individualisation of treatment strategy. Apart from including survival and local recurrence as outcome measures, new therapeutic approaches should be assessed in terms of quality of life of the patient.  相似文献   

13.
Jean GW  Shah SR 《Pharmacotherapy》2008,28(6):742-754
Treatment of metastatic colorectal disease has evolved over the last decade. Two epidermal growth factor receptor (EGFR) monoclonal antibodies--cetuximab and panitumumab--have been developed in an effort to provide yet another therapeutic option. The EGFR is a transmembrane glycoprotein, expressed constitutively throughout the body and found on many epithelial tissues. The monoclonal antibodies bind to and inhibit the activation of the receptor in the body. This inhibition prevents tumor cell growth, angiogenesis, invasion, and metastasis, and induces apoptosis. Cetuximab and panitumumab exhibit nonlinear pharmacokinetics. Both monoclonal antibodies are approved for the treatment of refractory metastatic colorectal cancer. Cetuximab in combination with irinotecan has significantly better response rates and progression-free survival compared with those of cetuximab or irinotecan alone. Cetuximab and panitumumab as monotherapy have shown significantly better response rates and progression-free survival compared with best supportive care in patients refractory to irinotecan and oxaliplatin. In the Cetuximab Combined with Irinotecan in First Line Therapy for Metastatic Colorectal Cancer (CRYSTAL) trial, treatment-na?ve patients received cetuximab in combination with the chemotherapy regimen infusional leucovorin, fluorouracil, and irinotecan (FOLFIRI) or FOLFIRI alone; the difference in progression-free survival was statistically significant but suggested only a modest benefit over FOLFIRI alone (8.9 vs 8 mo, p=0.036). Results of a preplanned analysis of the first 231 events in the Panitumumab Advanced Colorectal Cancer Evaluation (PACCE) trial favored the control group (chemotherapy regimen with folinic acid [leucovorin], fluorouracil, and oxaliplatin [FOLFOX] plus bevacizumab) instead of the control group plus panitumumab. For clinical consideration, many trials have shown that the intensity or absence of EGFR expression is not a clinically significant predictor of outcomes. Development and intensity of a rash are suggested to be a positive predictor of outcomes in patients. The most common adverse events of EGFR monoclonal antibody therapy are rash, diarrhea, and hypomagnesemia. Other serious but not common adverse events include hypersensitivity reactions and pulmonary toxicity. The availability of EGFR monoclonal antibodies has provided another weapon in the arsenal to treat refractory metastatic colorectal cancer. They have shown safety and efficacy in combination with other chemotherapy regimens and as monotherapy; however, their use as metastatic colorectal cancer therapy needs to be further explored.  相似文献   

14.
Cetuximab: in the treatment of metastatic colorectal cancer   总被引:4,自引:0,他引:4  
Reynolds NA  Wagstaff AJ 《Drugs》2004,64(1):109-18; discussion 119-121
Cetuximab is a chimeric monoclonal antibody highly selective for the epidermal growth factor receptor (EGFR), which is over-expressed by 25-80% of colorectal cancer tumours and associated with advanced disease. Cetuximab induces a broad range of cellular responses in tumours expressing EGFR, enhancing sensitivity to radiotherapy and chemotherapeutic agents. In a large, randomised, open-label, multicentre study in adult patients with irinotecan-refractory, metastatic colorectal cancer expressing EGFR, cetuximab 400 mg/m2 initial dose followed by 250 mg/m2 weekly plus irinotecan (various doses) produced a greater rate of partial response and disease control (partial response plus stable disease), and increased time to disease progression, compared with cetuximab monotherapy; survival was similar in both groups. The same dosage of cetuximab combined with irinotecan, fluorouracil and folinic acid (various regimens) produced partial responses in 43-58% of patients, a complete response in 5% of patients (one study only) and stable disease in 32-52% of patients with treatment-naive metastatic colorectal cancer expressing EGFR in three small, open-label trials. The most common grade 3/4 adverse events associated with cetuximab monotherapy were acne-like rash, asthenia, abdominal pain and nausea/vomiting. In patients receiving cetuximab plus irinotecan, these were diarrhoea, asthenia, leucopenia and neutropenia.  相似文献   

15.
Importance of the field: Head and neck cancer is the sixth most common cancer worldwide. Despite intense efforts to improve different treatment modalities, mortality rates in advanced cases remain high.

Areas covered in the review: EGFR targeting mAb cetuximab (Erbitux) has been approved for the treatment of locally advanced head and neck squamous cell carcinoma (HNSCC) in combination with radiotherapy and for recurrent or metastatic HNSCC. Here, we review recent scientific advances, as well as future research goals regarding EGFR inhibitors in the treatment of HNSCC. Information was compiled by searching the PubMed, Web of Knowledge and American Society of Clinical Oncology databases for articles published before October 2009. The search terms included ‘head and neck cancer’, ‘EGFR’, ‘cetuximab’, ‘panitumumab’, ‘zalutumumab’, ‘nimotuzumab’, ‘erlotinib’, ‘gefitinib’ and ‘lapatinib’. The National Institutes of Health registry of clinical trials (www.clinicaltrials.gov) was used to search for clinical trials in HNSCC.

What the reader will gain: The background scientific rationale, clinical efficacy and development of EGFR inhibitors in HNSCC are discussed.

Take home message: Cetuximab significantly improves survival of patients with locally advanced or metastatic HNSCC. Treatment strategies combining EGFR inhibitors with multimodality approaches may eventually increase cure rate in HNSCC.  相似文献   

16.
Kapur P 《Anti-cancer drugs》2011,22(4):362-370
Over the past couple of decades, multimodality treatment for the management of resectable rectal cancer has substantially improved the outcome of affected patients. However, the broad and unpredictable response to tumor of patients with rectal cancer treated with preoperative chemoradiotherapeutic interventions shows that our understanding of the molecular events leading to radioresistance in patients affected with this malignancy remains sparse. Multiple attempts by individual molecular markers in gene array and tissue microarray studies have emerged with the goal of identifying predictors of a response to chemoradiation in patients with rectal cancer. In this report, we discuss the status of the markers currently available in an attempt to tailor specific targeted therapies for rectal cancer in the neoadjuvant setting.  相似文献   

17.
目的探讨配合术前行放化疗直肠系膜全切除保肛治疗中低位直肠癌的可行性。方法纳入中低位直肠癌且肿瘤下缘距肛缘〉5cm的患者为观察对象,行直肠系膜全切除保肛治疗。术前行放化疗,新辅助放化疗后休息6—8周进行手术。针对不同病情分别采取低位前切除术,超低位前切除术(癌肿距肛缘5cm以内)。所有病例均术后定期化疗。结果全组病例无术中死亡。术后半年,20例排便功能基本恢复正常,为64.5%,8例排便功能较差,为25.8%,3例排便功能差,为9.7%(主要表现为无便意或大便不能控制)。术后随访1—6年,术后1年内吻合口狭窄2例。5年生存17例占54.8%,局部复发率15.4%。结论保肛手术在完善患者病情的术前评估,严格合理地选择手术适应证,配合术前行放化疗实施全直肠系膜切除术,中低位直肠癌保肛手术疗效确切。  相似文献   

18.
Small molecules with EGFR-TK inhibitor activity   总被引:5,自引:0,他引:5  
Specific and reversible EGFR tyrosine kinase inhibitors (TKI) such as gefitinib and erlotinib are clinically active in advanced or metastatic NSCLC and both are approved in various countries for the treatment of patients that failed prior chemotherapy. Erlotinib has also prolonged survival in pancreatic cancer patients when added to gemcitabine and regulatory approval in this disease is being sought. Additional promising activity has been seen in other tumor types, such as ovarian cancer or head and neck malignancies, and phase III trials in these malignancies are ongoing or planned. Despite these successes, these agents have exhibited anecdotal or modest activity when used as single agents in unselected patients with various other tumor types. We have learned that the clinical development of these agents is far from simple and we need to better understand biological and clinical criteria for patient selection and how to best use the different available agents. The recent discovery of EGFR mutations and the potential identification of other markers that might predict patient response could help to optimize the use of these agents in the future. Irreversible EGFR inhibitors, dual EGF/HER2 and pan-ErbB receptor inhibitors may have greater antitumor activity although the tolerance of these compounds compared to specific EGFR TKIs needs further characterization. HER2 specific TKIs are also in development. Lapatinib, a dual EGFR/HER2 TK inhibitors, is particularly promising in breast cancer. Newer agents, such as BMS-599626, have recently entered into the clinic. In addition to the use of these agents as single agents, many clinical studies are addressing the role of combining them with hormonal agents, biological agents or chemotherapy.  相似文献   

19.
目的:探讨复方苦参注射液联合同步放化疗治疗局部晚期直肠癌方法,比较复方苦参注射液联合同步放化疗与单纯同步放化疗治疗晚期卣肠癌近期疗效及毒性反应。方法:局部晚期直肠癌60例,随机分成两组。同步放化组采用希罗达口服同时放疗;复方苦参注射液组(苦参组)采用同步放化疗,同时加用复方苦参注射液静脉滴注(复方苦参注射液10ml加入250ml氯化钠注射液中静脉滴注)。治疗计划结束后比较两组患者的毒副反应,治疗结束4周后比较两组患者的近期疗效。结果:苦参纰和同步放化疗组缓解率(CR+PR)分别是86.7%(26/30)和70.0%(21/30)(P〈0.05)。苦参组和同步放化组部分毒性反应(白细胞及淋巴细胞减少、放射性直肠炎)比较有明显差异(P〈0.05)。结论:复方苦参注射液联合同步放化疗治疗局部晚期直肠癌可以提高患者近期疗效,减少毒副反应,值得进一步扩大研究及临床推广应用。  相似文献   

20.
Brain metastases (BM) are a common occurrence in patients with non-small cell lung cancer (NSCLC). Standard therapy options include whole brain radiotherapy and, in selected patients, surgery or stereotactic radiosurgery. The role of systemic treatment is controversial. There is a strong clinical rationale for the use of targeted therapies, because patients often have a poor performance status, and are not candidates for cytotoxic chemotherapy or radiotherapy, yet treatment is required to improve the extra-cranial disease. The efficacy of epidermal growth factor receptor (EGFR) inhibitors in the treatment of patients with BM from NSCLC has been reported mainly in case reports or small retrospective case series, with only a few prospective trials. Current evidence suggests that the use of EGFR tyrosine kinase inhibitors (TKIs) gefitinib and erlotinib should be considered in patients with asymptomatic CNS involvement, when clinical characteristics suggest a high likelihood of response; these characteristics are adenocarcinoma histology, never-smoker status, female gender and East Asian ethnicity. Upfront therapy with EGFR TKIs should be strongly considered in asymptomatic patients harboring activating EGFR mutations. In symptomatic BM, radiotherapy (RT) remains the standard treatment. Based on currently available data, treatment with concurrent RT and EGFR TKIs should be investigated in experimental trials only.  相似文献   

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