Treatment of oncogene-driven non-small cell lung cancer

Elisabeth A Kastelijn1, Adrianus J de Langen2, Bas J M Peters3

  • 1Department of Pulmonology, St. Antonius Hospital Utrecht/Nieuwegein, Utrecht.

Abstract

Insights

Targeted therapies improve outcomes for oncogene-driven non-small cell lung cancer (NSCLC). While tyrosine kinase inhibitors (TKIs) are effective, resistance develops. Blood tests help identify drivers and monitor treatment resistance.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Advanced or metastatic non-small cell lung cancer (NSCLC) treatment has been revolutionized by targeted therapies.
  • Understanding oncogene-driven NSCLC is crucial for optimizing patient care.

Purpose of the Study:

  • To review the treatment strategies for oncogene-driven non-small cell lung cancer (NSCLC).
  • To discuss the efficacy of targeted therapies and the role of immunotherapy in this patient population.

Main Methods:

  • Review of current literature on targeted therapies and immunotherapy for NSCLC.
  • Analysis of clinical outcomes in patients with specific genetic alterations (EGFR, ALK, ROS1, BRAF V600E).

Main Results:

  • Tyrosine kinase inhibitors (TKIs) demonstrate superior clinical outcomes compared to chemotherapy for EGFR, ALK, ROS1, and BRAF V600E-altered NSCLC.
  • Acquired resistance to TKIs leads to disease progression.
  • Immunotherapy has not shown improved overall survival over chemotherapy in EGFR and ALK-positive NSCLC.
  • Blood-based genetic analysis offers a noninvasive method for driver screening and resistance monitoring.

Conclusions:

  • Targeted molecular therapies are the standard of care for oncogene-driven NSCLC, offering significant clinical benefit with low toxicity.
  • The efficacy of immunotherapy in NSCLC patients with molecular alterations requires further investigation.
  • Liquid biopsy (blood-based genotyping) is increasingly valuable for NSCLC diagnosis and monitoring treatment resistance.

Related Concept Videos

Cancer-Critical Genes I: Proto-oncogenes01:33

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
11.5K
Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.7K
Lung Capacity01:47

Lung Capacity

The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
56.2K
ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
9.8K
Cancer Cell Migration through Invadopodia01:35

Cancer Cell Migration through Invadopodia

Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
3.3K
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
7.1K