Microwave ablation as local consolidative therapy for patients with extracranial oligometastatic EGFR-mutant non-small cell lung cancer without progression after first-line EGFR-TKIs treatment

2019 ◽  
Vol 146 (1) ◽  
pp. 197-203 ◽  
Author(s):  
Yang Ni ◽  
Xin Ye ◽  
Xia Yang ◽  
Guanghui Huang ◽  
Wenhong Li ◽  
...  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Zhiyu Peng ◽  
Huahang Lin ◽  
Ke Zhou ◽  
Senyi Deng ◽  
Jiandong Mei

Abstract Objective To investigate the predictive value of programmed death-ligand 1 (PD-L1) expression in non-small cell lung cancer (NSCLC) patients treated with epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs). Methods We conducted a systemic search of PubMed, EMBASE, and the Cochrane Library from 1 January 2000 to 30 August 2020, to identify related studies. We combined the hazard ratio (HR) and 95% confidence interval (CI) to assess the correlation of PD-L1 expression with progression-free survival (PFS) and overall survival (OS). We assessed the quality of the included studies by the Newcastle–Ottawa Scale (NOS). We performed subgroup analyses based on immunohistochemistry (IHC) scoring system, IHC antibodies, sample size, countries, and survival analysis mode. Sensitivity analysis and evaluation of publication bias were also performed. Results Twelve studies including 991 patients met the criteria. The mean NOS score was 7.42 ± 1.19. Patients with high PD-L1 expression was associated with poorer PFS (HR = 1.90; 95% CI = 1.16–3.10; P = 0.011), while there was no association between PD-L1 expression and OS (HR = 1.19; 95% CI = 0.99–1.43; P = 0.070). Subgroup analysis prompted IHC scoring systems, IHC antibodies, and sample size have important effects on heterogeneity. The pooled results were robust according to the sensitivity analysis. Conclusions The result of this meta-analysis suggested that PD-L1 expression might be a predictive biomarker for EGFR-mutant non-small cell lung cancer treated with EGFR-TKIs.


Medicine ◽  
2021 ◽  
Vol 100 (32) ◽  
pp. e26911
Author(s):  
Yiqian Jiang ◽  
Leyi Shou ◽  
Qingmin Guo ◽  
Yanhong Bao ◽  
Xiaoping Xu ◽  
...  

2020 ◽  
Author(s):  
Kazuhiko Nakagawa ◽  
Koichi Matsumura ◽  
Tayler Scory ◽  
Megan S Farris ◽  
Kelly A Larkin-Kaiser ◽  
...  

Background: Five EGFR-tyrosine kinase inhibitors ( EGFR TKIs) are currently available in the first-line setting for non-small-cell lung cancer (NSCLC) in Japan. The aim here was to compare the relative efficacy of EGFR TKIs in the Japanese population. Materials & methods: A systematic review identified randomized controlled trials examining the efficacy of first-line EGFR TKIs. A Bayesian network meta-analysis was used to assess these EGFR TKI comparisons for progression-free survival (PFS). Results: A total of seven randomized controlled trials were identified and considered for network meta-analysis. Dacomitinib showed a trend toward improved PFS versus all comparators. Conclusion: Dacomitinib demonstrated a trend toward improved PFS and therefore, should be considered one of the standard first-line therapies for Japanese patients diagnosed with EGFR+ non-small-cell lung cancer.


Cancers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 272
Author(s):  
Chia-Chi Hsu ◽  
Albert Ying-Po Yang ◽  
Jui-Yi Chen ◽  
Hsin-Hui Tsai ◽  
Shu-Heng Lin ◽  
...  

Epidermal growth factor receptor (EGFR) mutations are the most common driver genes in non-small cell lung cancer (NSCLC), especially in the Asian population. Although EGFR-tyrosine kinase inhibitors (TKIs) are influential in the treatment of EGFR-mutant NSCLC patients, acquired resistance inevitably occurs. Therefore, there is an urgent need to develop strategies to overcome this resistance. In addition, cancer cells with particular mutations appear more vulnerable to deficiency related to the availability of specific amino acids. However, it is still unknown which amino acid is affected in the case of EGFR-mutant NSCLC. In the present study, we established a screening platform based on amino acid deprivation and found that EGFR-mutant NSCLC cells are sensitive to short-term lysine deprivation. Moreover, we found that expression of the gene for the lysine catabolism enzyme α-aminoadipate aminotransferase (AADAT) increased under lysine deprivation, revealing that AADAT can be regulated by EGFR–AKT signaling. Finally, we found that lysine reduction can not only enhance the cytostatic effect of single-agent osimertinib but also overcome the resistance of EGFR-TKIs in EGFR-mutant NSCLC cells. In summary, our findings suggest that the introduction of lysine stress might act as an advancement in EGFR-mutant NSCLC therapy and offer a strategy to overcome EGFR-TKI resistance.


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