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The pituitary tumor-transforming gene 1 (PTTG1), also known as Securin, is considered an oncogene. This study aimed to investigate the role of PTTG1 in clear cell renal cell carcinoma (ccRCC) using in silico bioinformatics approaches. A pan-cancer analysis using The Cancer Genome Atlas (TCGA) data indicated that among all cancer types copy number amplification of PTTG1 gene was most frequently found in ccRCC. However, amplification of PTTG1 gene copy number did not correlate with the increase of mRNA level in ccRCC, and did not predict the patients' overall survival. Instead, ccRCC was correlated with overexpression of PTTG1 mRNA, and its expression level was stage-dependent increased in cancer patients. An outlier analysis using the Oncomine database suggested that PTTG1 mRNA expression served as a good biomarker for ccRCC. Pathway analysis for upregulated genes enriched in PTTG1-high expressing ccRCC patients found that PTTG1 overexpression was associated with mitotic defects. Mining drug sensitivity data using the Cancer Therapeutics Response Portal (CTRP) discovered that PTTG1-high expressing ccRCC cell lines were susceptible to a Rac1 (Ras-related C3 botulinum toxin substrate 1) inhibitor NSC23766. Therefore, this study provides an in silico insight into the role of PTTG1 in ccRCC, and repurposes the Rac1 inhibitor NSC23766 for treating PTTG1-high expressing ccRCC.  相似文献   
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《Clinical lung cancer》2020,21(6):534-544
BackgroundReliable prediction of progression patterns and failure sites for patients with stage IV lung adenocarcinoma is valuable for physicians to deliver personalized tyrosine kinase inhibitor (TKI) treatment.Patients and MethodsWe retrospectively enrolled 266 patients who had stage IV lung adenocarcinoma and received first-line TKI treatment from 2013 to 2017 in Shanghai Chest Hospital. The clinical characteristics at initial diagnosis, progression patterns, and failure sites were analyzed with the attempt to identify some predictive factors for progression patterns and failure sites.ResultsAmong all patients, 62.4% developed systemic progression, and 37.6% developed oligoprogression. Both cohorts had a median progression-free survival (PFS) of 9 months. The percentage of patients who developed original and distant failure was 39.1% and 60.9%, respectively. Patients with oligometastasis at initial diagnosis were more prone to develop oligoprogression (odds ratio [OR], 4.370; 95% confidence interval [CI], 1.881-10.151; P = .001), whereas pulmonary metastasis was negatively correlated with oligoprogression (OR, 0.567; 95% CI, 0.330-0.974; P = .04). Both oligometastasis diagnosis (OR, 2.959; 95% CI, 1.347-6.500; P = .007) and the maximum diameter of the primary lung lesion (threshold 3.25 cm: OR, 3.646; 95% CI, 2.041-6.515; P = .0001) were strong predictive factors for original failures. Osseous metastasis at initial diagnosis might be an indication for distant failure (OR, 0.536; 95% CI, 0.316-0.909; P = .021).ConclusionOver one-half of patients with stage IV lung adenocarcinoma receiving first-line TKI treatment developed systemic progression and distant failure. Metastasis patterns at initial diagnosis was the most important predictive factor for progression patterns and failure sites. The maximum diameter of the primary lung lesion and evidence of osseous metastasis were also found to be significant indicative factors for failure sites.  相似文献   
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ABSTRACT

Introduction

Hepatocellular carcinoma (HCC) is one of the most frequent tumors affecting the gastrointestinal tract and a universal cause of morbidity and mortality. Cabozantinib is a strong multi-inhibitor of receptor tyrosine kinases approved for renal cell carcinoma that could be useful also for the treatment of HCC.  相似文献   
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《Bulletin du cancer》2014,101(6):647-652
Tyrosine kinase inhibitors (TKI) that block epidermal growth factor receptor (EGFR) pathway have demonstrated a clinical benefit for patients with non-small-cell lung cancer (NSCLC) harboring EGFR mutations. The currently available TKI (gefitinib and erlotinib) are EGFR reversible inhibitors. Afatinib is an oral, irreversible ErbB family blocker that covalently binds and blocks signaling from EGFR (ErbB1), HER2 (ErbB2) and ErbB4. The compound inhibits also the transphosphorylation of ErbB3. With this mode of action, afatinib is thought to have a mechanistic advantage over EGFR blockade alone, in that it provides a sustained, covalent inhibition of ErbB homo- and hetero-dimers. In the pivotal LUX-Lung 3 study, afatinib demonstrated a prolonged progression free survival over standard pemetrexed plus cisplatin chemotherapy (11.1 versus 6.9 months; HR = 0.58, 95% CI: 0.43–0.78; P = 0.001) in EGFR mutation positive NSCLC patients. The compound has recently been granted a marketing authorization (MA) for the treatment of patients with locally advanced or metastatic NSCLC with activating EGFR mutation(s) and EGFR TKI-naive. In this paper are summarized the efficacy and safety data in this indication.  相似文献   
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目的:观察艾迪注射液联合GP化疗方案治疗表皮生长因子酪氨酸激酶抑制剂(EGFR-TKI)治疗失败后的晚期非小细胞肺癌(NSCLC)的临床疗效。方法选取2011年12月—2013年12月襄阳市中心医院接受EGFR-TKI治疗后出现获得性耐药的62例晚期NSCLC患者,分为对照组和治疗组,每组各31例。对照组给予GP方案常规化疗:注射用盐酸吉西他滨1000 mg/m2,1次/d,持续静脉滴注3 h,第1、8天给药;顺铂注射液75 mg/m2,1次/d,静脉滴注,第1天给药。21天为1个周期,连续观察2个周期。治疗组在对照组的基础上静脉滴注艾迪注射液,50 mL溶于5%葡萄糖溶液500 mL静滴,1次/d,2周为1个疗程,连续使用3个疗程。评价两组患者的近期疗效指标客观有效率(ORR)、疾病控制率(DCR)以及远期疗效指标无进展生存期(PFS)、总生存期(OS)。患者的生活质量(KPS)以 Karnofsky 评分进行评定。对毒副反应进行评价。结果62例患者均可评价疗效,其中治疗组ORR 61.29%,DCR 83.87%,对照组ORR 35.48%,DCR 70.97%,治疗组的ORR、DCR均明显高于对照组,两组比较差异具有统计学意义(P<0.05、0.01)。治疗组中位PFS为6.3(1.2~20.6)个月,对照组中位PFS为3.4(0.7~10.3)个月,两组比较差异具有统计学意义(P<0.05)。治疗组死亡患者的中位OS为15.1(1.4~28.2),对照组死亡患者的中位OS为8.9(1.0~17.2)个月,两组患者中位OS差异无统计学意义。治疗后,治疗组患者的KPS评分显著高于对照组,两组比较差异具有统计学意义(P<0.01)。治疗组不良反应发生率为32.3%,对照组不良反应发生率为37.8%,两组不良反应发生率比较无显著性差异。治疗组胃肠道反应发生率为38.7%(12/31),对照组胃肠道反应发生率为51.6%(16/31),与对照组比较显著减少(P<0.01)。结论艾迪注射液联合 GP 化疗方案治疗EGFR-TKI获得性耐药的晚期NSCLC的疗效较好,能延缓疾病进展,延长生存期,提高生存质量,且减轻化疗带来的胃肠道反应,值得临床进一步研究。  相似文献   
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Background:

Accumulating data shows that exon 19 deletions and L858R, both activating epidermal growth factor receptor mutations in non-small-cell lung cancers (NSCLCs), are just two different entities in terms of prognosis and treatment response to tyrosine kinase inhibitors (TKIs).

Methods:

A systematic review and meta-analysis of randomized controlled trials comparing TKIs with conventional chemotherapy was performed. Eight trials of 1498 patients and five trials of 1279 patients with either exon 19 deletions or L858R were included in the meta-analysis.

Results:

TKI treatment demonstrated progression-free survival benefit in patients with exon 19 deletions (hazard ratio (HR): 0.27, 95% confidence interval (CI): 0.21–0.35) and L858R (HR: 0.45, 95% CI: 0.35–0.58). Patients with exon 19 deletions had significant overall survival (OS) benefit under TKI treatment (HR: 0.72, 95% CI: 0.60–0.88). Subgroup analyses showed that irreversible TKIs, but not reversible TKIs, had statistically significant OS benefit in these patients (irreversible TKIs, HR: 0.59, 95% CI: 0.47–0.73; reversible TKIs, HR: 0.84, 95% CI: 0.69–1.02). Patients with L858R demonstrated no OS benefit under first-line TKI use (HR: 1.15, 95% CI: 0.95–1.39).

Conclusions:

In patients with advanced NSCLC harbouring exon 19 deletions, TKIs are associated with better OS compared with conventional chemotherapy. Future clinical trials should take exon 19 deletions and L858R as distinct disease entities and evaluate the treatment efficacy separately.  相似文献   
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