A Career in Lung Cancer: Pushing Beyond Chemotherapy

Author(s):  
Pradnya Dinkar Patil ◽  
Frances Shepherd ◽  
David H. Johnson

The landscape of treatments for non–small cell lung cancer (NSCLC) has evolved dramatically over the past 3 decades. A better understanding of the disease biology and identification of actionable genetic alterations heralded an era of targeted therapies that has led to unprecedented survival benefits in patients with oncogene-driven NSCLC. More recent breakthroughs in immunotherapy led to the development of immune checkpoint inhibitors that have changed the treatment paradigm for patients with advanced NSCLC because of their ability to produce durable responses, resulting in improved survival outcomes. Despite the unparalleled success of these agents, primary and acquired resistance to these therapies pose a formidable challenge. In this article, we provide an overview of the therapeutic advances in the treatment of NSCLC, mechanisms of resistance, and potential strategies to overcome resistance to targeted therapies and immune checkpoint inhibitors.

2020 ◽  
Vol 12 ◽  
pp. 175883592093033
Author(s):  
Rui Jin ◽  
Jing Zhao ◽  
Lexin Xia ◽  
Qin Li ◽  
Wen Li ◽  
...  

Targeted therapies are efficient in the context of oncogenic driver mutations. Epidermal growth factor receptor (EGFR)-mutant lung cancers represent a distinct subset of non-small-cell lung cancer (NSCLC) with marked sensitivity to EGFR tyrosine kinase inhibitors (TKIs). Despite the high response rate to EGFR TKIs in EGFR-mutant lung cancer, resistance and tumor recurrence are unavoidable. Therapeutic options are restricted in patients after exhaustion of targeted therapies. Immune checkpoint inhibitors (ICIs) represent a novel therapeutic option for advanced NSCLC with significant overall survival benefit in registration trials. No superiority in terms of long-term survival was observed in the EGFR mutation subgroup when ICIs were given as monotherapy in second-line treatment in earlier studies. Thus, the appropriate application of ICIs to patients harboring EGFR mutations remains an important field of ongoing research. Here, we discuss different immune checkpoint blockade strategies, including ICIs alone and in combination with TKIs, chemotherapy, radiation, and antiangiogenic agents in EGFR-mutant NSCLC as first-line and subsequent treatments. We also summarize the evidence concerning the heterogeneous molecular features and immune signatures of EGFR mutations and their associations with ICI therapy outcomes. This study was performed to improve our understanding of the optimal mode of immune-based treatment approaches in EGFR-mutant NSCLC.


2020 ◽  
Vol 21 (2) ◽  
pp. 597 ◽  
Author(s):  
Kei Kunimasa ◽  
Taichiro Goto

The immune system plays a dual role in tumor evolution—it can identify and control nascent tumor cells in a process called immunosurveillance and can promote tumor progression through immunosuppression via various mechanisms. Thus, bilateral host-protective and tumor-promoting actions of immunity are integrated as cancer immunoediting. In this decade, immune checkpoint inhibitors, specifically programmed cell death 1 (PD-1) pathway inhibitors, have changed the treatment paradigm of advanced non-small cell lung cancer (NSCLC). These agents are approved for the treatment of patients with NSCLC and demonstrate impressive clinical activity and durable responses in some patients. However, for many NSCLC patients, the efficacy of immune checkpoint inhibitors is limited. To optimize the full utility of the immune system for eradicating cancer, a broader understanding of cancer immunosurveillance and immunoediting is essential. In this review, we discuss the fundamental knowledge of the phenomena and provide an overview of the next-generation immunotherapies in the pipeline.


Author(s):  
Antonio Passaro ◽  
Julie Brahmer ◽  
Scott Antonia ◽  
Tony Mok ◽  
Solange Peters

A proportion of patients with lung cancer experience long-term clinical benefit with immune checkpoint inhibitors (ICIs). However, most patients develop disease progression during treatment or after treatment discontinuation. Definitions of immune resistance are heterogeneous according to different clinical and biologic features. Primary resistance and acquired resistance, related to tumor-intrinsic and tumor-extrinsic mechanisms, are identified according to previous response patterns and timing of occurrence. The clinical resistance patterns determine differential clinical approaches. To date, several combination therapies are under development to delay or prevent the occurrence of resistance to ICIs, including the blockade of immune coinhibitory signals, the activation of those with costimulatory functions, the modulation of the tumor microenvironment, and the targeting T-cell priming. Tailoring the specific treatments with distinctive biologic resistance mechanisms would be ideal to improve the design and results of clinical trial. In this review, we reviewed the available evidence on immune resistance mechanisms, clinical definitions, and management of resistance to ICIs in lung cancer. We also reviewed data on novel strategies under investigation in this setting.


Immunotherapy ◽  
2021 ◽  
Author(s):  
Joseph Zouein ◽  
Fady G Haddad ◽  
Roland Eid ◽  
Hampig R Kourie

Lung cancer is the second most common cancer worldwide and the leading cause of death among cancers. The progressive approvals of immunotherapy as first-line treatment options have helped improve cancer prognosis. However, longer follow-up has confirmed the possibility of acquired resistance to immune checkpoint inhibitors (ICIs) which can lead to late relapses. Chemotherapy can act as a priming therapy to increase a tumor’s response to immunotherapy. We aim through this review to explain the mechanism behind ICI resistance and the value of chemotherapy in escaping this resistance. Finally, all US FDA approvals regarding the management of metastatic non-small-cell lung cancer using a combination of ICIs and chemotherapy are summarized.


Sign in / Sign up

Export Citation Format

Share Document