Baochai Lin

Zhejiang Cancer Hospital, Hang-hsien, Zhejiang Sheng, China

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Publications (9)8.53 Total impact

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    ABSTRACT: Epidermal growth factor receptor (EGFR)-activating mutation predicts excellent response to EGFR tyrosine kinase inhibitors (TKIs). However, lung cancer patients are often with unknown EGFR mutation status because there are little tumor specimen to determine. TKIs induce tumor cell apoptosis which associates with several apoptosis-related genes. To explore the association between GNAS1 T393C polymorphism and therapeutic efficacy of TKI in pretreated advanced non-small cell lung cancer (NCSLC) with unknown EGFR mutation status. A total of 116 patients were recruited for the study from Zhejiang Cancer Hospital, all of whom were treated with gefitinib or erlotinib after failure to prior chemotherapy. We detected the genotype of peripheral blood lymphocytes of patients with GNAS1 T393C polymorphism through polymerase chain reaction (PCR). Statistical analysis was performed by SPSS version 18.0. The overall response rate was 29.3%. No significant associations were found among GNAS1 T393C polymorphism and the objective response rate. The disease control rate of patients with GNAS1 T393C CC genotype was lower than that of patients with variant genotype (TT or CT) (46.2% vs 73.8%, P=0.039). Univariate analysis identified gender, smoking history, histology and GNAS1 T393C polymorphism as predictive marker of PFS (P=0.04, P<0.001, P<0.001 and P=0.005). Multivariate analysis of factors, including smoking history, performance status score, histology, GNAS1 T393C polymorphism demonstrated that GNAS1 T393C polymorphism was correlated independently with PFS (P=0.007). Our data suggest the role of GNAS1 T393C CC genotype as a poor predictive marker both of DCR and PFS in advanced NSCLC patients treated with tyrosine kinase inhibitor.
    Zhongguo fei ai za zhi = Chinese journal of lung cancer 04/2014; 17(4):321-6. DOI:10.3779/j.issn.1009-3419.2014.04.06
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    ABSTRACT: The preclinical experiments and several clinical studies showed icotinib, an oral epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, in Chinese patients with advanced non-small cell lung cancer (NSCLC) who failed previous chemotherapy. We performed a retrospective study of the efficacy and safety of icotinib monotherapy in a different and more recent sample of Chinese patients. The clinical data of 149 patients with advanced NSCLC who were admitted to Zhejiang Cancer Hospital from August 1, 2011 to July 31, 2012 were retrospectively analyzed. All patients were given icotinib treatment after the failure of previous chemotherapy. Univariate and multivariate analyses were conducted based on the Kaplan Meier method and Cox proportional hazards model. The objective response rate was 33/149 and disease control rate was 105/149. No complete response occurred. Median progression free survival (PFS) with icotinib treatment was 5.03 months (95% CI: 3.51 to 6.55). Median overall survival was 12.3 months (95% CI: 10.68 to 13.92). Multivariate analysis showed that the mutation of EGFR and one regimen of prior chemotherapy were signi?cantly associated with longer PFS. At least one drug related adverse event was observed in 65.8% (98/149) of patients, but mostly grade 1 or 2 and reversible and none grade 4 toxicity. Icotinib monotherapy is an effective and well tolerated regimen for Chinese patients with NSCLC after the failure of chemotherapy. It is a promising agent and further study with icotinib in properly conducted trials with larger patient samples and other ethnic groups is warranted.
    Chinese medical journal 01/2014; 127(2):266-71. · 1.02 Impact Factor
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    ABSTRACT: BIM gene is a member of the BCL-2 family, is involved in cell death. The aim of this study is to explore the relationship between BIM gene polymorphism and therapeutic efficacy in the retreatment advanced non-small cell lung cancer (NSCLC) with tyrosine kinase inhibitor (EGFR-TKI). In the study, there were 123 patients who were diagnosed with advanced NSCLC in Zhejiang Province Cancer Hospital bewteen January 2009 to October 2012, all of who were received gefitinib and erlotinib therapy after failure to chemotherapy. We detected the genotype of peripheral blood leukocytes of patients with BIM gene polymorphism though polymerase chain reaction (PCR). Statistical analysis was performed by SPSS version 13.0. On the disease control rates, BIM gene with no polymorphism type was slightly better trend than polymorphism types in disease control rate DCR (75.5% vs 57.1%, χ²=2.931, P=0.087). Univariate analysis the median PFS, women were longer than men (6.9 months vs 4.5 months, χ² =7.077, P=0.008). Non-smokers were longer than smokers (8.0 months vs 2.5 months, χ² =15.277, P<0.001). Adenocarcinoma were longer than others pathological type (7.0 months vs 2.0 months, χ² =14.978, P<0.001). The median PFS in BIM gene with no polymorphism type were longer than with polymorphism type (6.0 months vs 3.5 months, χ²=7.035, P=0.008). Multi-factor analysis showed that smoking, pathological type, the BIM gene polymorphism were the independent prognostic factors for PFS. The patients with the BIM gene no polymorphism have longer the median progression-free time than the polymorphism types in retreatment advanced non-small cell lung cancer patients with tyrosine kinase inhibitor.
    Zhongguo fei ai za zhi = Chinese journal of lung cancer 12/2013; 16(12):632-638. DOI:10.3779/j.issn.1009-3419.2013.12.03
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    ABSTRACT: BACKGROUND: Adenosquamous carcinoma (ASC) of the lung is a rare subtype of nonsmall-cell lung cancer (NSCLC). To date, the efficacious targeted therapy for advanced ASC remains unclear and the epidermal growth factor receptor (EGFR) mutation rate is not well known. METHODS: We retrospectively reviewed clinical information of patients with ASC who were treated with gefitinib or erlotinib at Zhejiang Cancer Hospital between January 2007 and December 2011. Survival analysis was evaluated by the Kaplan-Meier method. EGFR mutations were assessed in part using direct sequencing methods. RESULTS: In total, 49 patients with a median age of 57 years were used in this study. Thirteen patients achieved a partial response and 19 had disease stabilization. The objective response rate was 26.5%, and the disease control rate was 65.3%. The median progression-free survival and overall survival were 4.3 and 17.6 months, respectively. In 21 patients with adequate specimens for molecular analysis, 7 (33.3%) had EGFR mutations (4 with deletions within exon 19 and 3 with L858R messenger mutation in exon 21). EGFR mutations were significantly more frequent in women (4/9, 44.4%) than men (3/12, 25%), never-smokers (6/15, 40%), and smokers (1/6, 16.7%). CONCLUSION: EGFR-tyrosine kinase inhibitor (TKI) is an effective treatment for ASC. The frequency of EGFR mutation and clinical characteristics of the EGFR mutants in ASC are similar to those of Asian patients with adenocarcinoma.
    Journal of the Chinese Medical Association 06/2013; DOI:10.1016/j.jcma.2013.05.007 · 0.89 Impact Factor
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    ABSTRACT: As the first epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) in China, icotinib shows promising anticancer activity in vitro and vivo. The phase III clinical study (ICOGEN) showed that icotinib has a good efficacy and tolerability in Chinese patients with advanced non-small cell lung cancer (NSCLC) compared with gefitinib. This retrospective study aims to evaluate the efficacy and tolerability of icotinib monotherapy for advanced NSCLC patients with EGFR mutation and wild-type patients in our hospital. Patients with advanced NSCLC who were treated with icotinib in Zhejiang Cancer Hospital were retrospectively analyzed from August, 2011 to August, 2012. Survival was estimated using Kaplan-Meier analysis and Log-rank tests. The clinical data of 49 patients (13 with wild-type and 36 with EGFR mutation) with NSCLC were enrolled in the current study. The patients' overall objective response rate (ORR) was 58.3% and the disease control rate (DCR) in 36 EGFR mutation patients was 88.9%. The ORR was 7.7% and DCR was 53.8% in the wild-type patients. Median progression-free survival (PFS) with icotinib treatment in EGFR mutation patients was 9.5 months and 2.2 months in wild-type patients (P<0.001). Nineteen patients with EGFR mutation received icotinib as first-line and 17 in further-line treatment. The PFS was 9.5 months in the first-line and 8.5 months for second-line or further-line patients (P=0.41). Median overall survival (OS) in EGFR mutation patients was not reached, but was 12.6 months in wild-type patients. Most of the drug-related adverse events were mild (grade I or II) and reversible with no grade IV toxicity. Icotinib monotherapy showed significant antitumor activity in advanced NSCLC EGFR mutation patients. The toxicity was well tolerated and acceptable.
    Zhongguo fei ai za zhi = Chinese journal of lung cancer 03/2013; 16(3):138-43. DOI:10.3779/j.issn.1009-3419.2013.03.04
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    ABSTRACT: OBJECTIVE: For the rarity incidence, patients with esophageal cancer metastasized to the central nervous system have rarely reported. The aim of our study was to assess the frequency of brain metastasis from primary esophageal cancer, and to detect the clinical characteristics, diagnosis and prognosis. METHODS: A retrospective analysis of the medical files was carried out in a series of 26 consecutive patients with central nervous system involvement treated at our institution between 2000 and 2010 from 1612 esophageal primary carcinoma. The clinical history, image, and pathologic findings were analyzed. RESULTS: Among the 26 patients, 12 initially presented with a single cerebral metastatic lesion, and 14 had multiple brain lesions. There were 4 patients with adenocarcinoma, 22 with squamous cell carcinoma. Five of them received surgery followed with whole brain radiation, 5 underwent stereotactic radiosurgery, and 13 received whole brain radiation, 3 patients received chemotherapy treatment. The median survival period was 4.2 months, one year survival rate was 5.8%. CONCLUSIONS: This retrospective study of 1612 patients with esophageal carcinoma at a single medical centre, indicated that 1.61% (26/1612) of these patients had a diagnosis of brain metastasis. The prognosis is poor for the brain metastasis of esophageal carcinoma. Solitary brain lesion, surgery and good KPS may indicate a well prognosis.
    World Neurosurgery 02/2013; 81(1). DOI:10.1016/j.wneu.2013.02.058 · 2.42 Impact Factor
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    ABSTRACT: Background Tumor length is an important prognostic factor for many carcinomas, but its role in esophageal cancer remained undetermined. The aim of this study was to investigate the effect of tumor length on survival for patients with confined tumors (grade pT1-2) without lymph-node metastases in esophageal squamous cell carcinoma. Methods We enrolled 201 patients with esophageal squamous cell carcinoma (SCC) who had undergone surgical resection and been confirmed as pT1-2N0M0. The relationship of tumor length with overall survival was assessed and compared with other factors detailed in the American Joint Committee on Cancer (AJCC) tumor, node, metastasis (TNM) staging system published in 2009. Results The overall survival (OS) rates at 1, 3, and 5 years were 93.0%, 83.7%, and 69.2%, respectively. The tumor length adversely affected OS, with the 5-year rate being 93.5%, 82.0%, 68.6%, 67.9%, 55.3% and 41.1%, respectively for tumor lengths of less than 10 mm, 10 to 20 mm, 20 to 30 mm, 30 to 40 mm, 40 to 50 mm, and greater than 50 mm (P< 0.001). Multivariate analyses showed that the pathologic T classification and grade of tumor was significantly associated with OS. Tumor length of 30 mm or more remained an independent prognostic factor (P = 0.04), as did the other current TNM factors. Conclusion Tumor length appears to affect the OS of patients with early-stage esophageal squamous cell carcinoma. It may provide additional prognostic information for the current TNM staging system.
    World Journal of Surgical Oncology 12/2012; 10(1):273. DOI:10.1186/1477-7819-10-273 · 1.20 Impact Factor
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    ABSTRACT: The appearance of highly effective and low toxic drugs enables an increasing number of advanced non-small cell lung cancer (NSCLC) patients to receive third-line therapy. No other standard choice for third-line therapy aside from erlotinib is possible. This study respectively explores the efficacy and safety of single chemotherapy, epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs), and doublet chemotherapy in advanced NSCLC third-line treatment. This study included 115 NSCLC patients in the stage IIIb or IV who were retrospectively reviewed to investigate the differences of survival time between different treatments. Univariate and multivariate analyses were conducted based on the Kaplan-Meier method and Cox proportional-hazards model. The median progression free survival (PFS) values in the single agent, EGFR-TKIs and doublet groups were 2.30, 3.17 and 2.37 months, respectively (P=0.045). The median overall survival from the initiation of the third-line treatment were 8.00, 10.40 and 7.87 months in the three groups (P=0.110). The rates of stage III-IV toxicities were 33.3%, 18.2% and 68.8% (P<0.001), respectively. After the third-line treatment, the PFS was significantly increased in patients with a performance status (PS) of 0 to 1 (P<0.001), and the survival time was prolonged in patients who never smoke (P=0.011), have good PS (P<0.001), and have disease control after both first- and second-line treatments (P=0.044) using multivariate analysis. Advanced NSCLC patients who never smoke, have good PS scores, and have good disease control from the first- and second-line therapies could benefit more in third-line treatment. EGFR-TKIs therapy showed increased PFS compared with single and doublet agents.
    Zhongguo fei ai za zhi = Chinese journal of lung cancer 06/2012; 15(6):369-74. DOI:10.3779/j.issn.1009-3419.2012.06.08
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    ABSTRACT: Cutaneous metastases in primary advanced non-small cell lung cancer (NSCLC) rarely occur in comparison with other site involvement. The incidence of cutaneous metastases and its prognosis is not well known. Data from a 2,130 patients with advanced NSCLC were analyzed, in order to assess the incidence and survival prognosis of cutaneous metastases in primary advanced NSCLC. The clinical data of 2,130 patients with advanced NSCLC who were admitted to Zhejiang cancer Hospital from January 1998 to December 2007 were retrospectively analyzed. Data pertaining to their presentation, diagnosis treatment, pathology, follow-up, and clinical course were documented. Clinical characteristics were investigated based on the clinical and pathologic records. All of the cutaneous metastases were confirmed by cytology or biopsy. Survival analysis was made by Kaplan-Meier method. The Cox regression model was performed to analyze the relationship between the influential factors and the overall survival. Among the 2,130 advanced NSCLC patients as initial diagnosis, 60 (2.8 %) demonstrated abnormally cutaneous metastases. Fifteen patients with only cutaneous metastases, forty-five subjects combined with other site metastasis. There were 56 patients who received chemotherapy, and the first-line disease control rate was 33.9 %, the median free progression survival time was 1.9 months. There were significant differences in overall survival between cutaneous metastases and non-cutaneous metastases arms (3.9 vs. 10.0 months, P < 0.001). Multivariate analyses revealed that performance status and chemotherapy efficacy statistically associated with overall survival. This retrospective study indicated that 2.8 % of advanced NSCLC patients showed cutaneous metastases as an initial presentation. Cutaneous metastases of lung cancer are of poor prognosis.
    Journal of Cancer Research and Clinical Oncology 05/2012; 138(10):1613-7. DOI:10.1007/s00432-012-1239-6 · 3.01 Impact Factor