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Non-small cell lung cancer (NSCLC) remains the leading cause of cancer-related deaths worldwide. Among recent advancements, tyrosine kinase inhibitors (TKIs) have revolutionized the treatment of this disease in patients with oncogenic mutations. However, the emergence of resistance to TKIs limits their long-term effectiveness. Consequently, identifying new therapies is crucial, and one potential solution lies in combining TKIs with thoracic radiotherapy (RT). This approach aims to prolong survival while maintaining a favorable safety profile. This study examines the benefits of this combined strategy.  

Combining TKIs and radiotherapy: efficacy and side effects  


Twelve studies, including 2,936 patients with NSCLC harboring oncogenic mutations, were selected. The effects of TKIs alone were compared to their combination with thoracic RT. Progression-free survival (mPFS), overall survival (mOS), and adverse effects (AEs) were evaluated to assess treatment efficacy.  

This study demonstrates that combining TKIs with RT provides notable clinical advantages. The data show a significant increase in mPFS, particularly when this combination is used as a first-line treatment. Similarly, mOS is significantly improved, confirming the potential of this strategy to extend patients' lifespans.

However, the study also highlights that the TKI-RT combination carries an increased risk of AEs, although the severity of these side effects is comparable to those observed with TKIs alone. Adverse effects related to RT mainly include pneumonitis (41.3%, with a severity rate of 4.5%), esophagitis (15.4%, severe in 6.2% of cases), and radiodermatitis (11.1%).
 

TKIs and radiotherapy: promising perspectives despite challenges


This study underscores the promising potential of the TKI-RT combination for NSCLC treatment. By extending both progression-free and overall survival, this approach redefines the standards of care. However, it also highlights the importance of close monitoring to mitigate adverse effects while maximizing clinical benefits. Further research is required to refine and optimize treatment protocols and better understand the mechanisms underlying this therapeutic synergy, paving the way for even more personalized medicine. 

Source(s) :
Li, W., et al. (2024). Efficacy and safety of tyrosine kinase inhibitors with thoracic radiotherapy for patients with oncogene-mutated non-small cell lung cancer: a meta-analysis. Radiation Oncology (London, England), 19, 154 ;

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