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Rising Kashmir > Blog > Viewpoint > The Role of Immunotherapy in Lung Cancer Treatment
Viewpoint

The Role of Immunotherapy in Lung Cancer Treatment

DR. SANCHAYAN MANDAL
Last updated: September 7, 2023 10:14 pm
DR. SANCHAYAN MANDAL
Published: September 7, 2023
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Lung cancer remains to be one of the most formidable challenges in oncology. Early-stage lung cancer may not present noticeable symptoms, but as the disease progresses, common signs can emerge. These include persistent cough, chest pain, shortness of breath, unexplained weight loss, hoarseness, and recurrent respiratory infections. Identifying these symptoms promptly can lead to an earlier diagnosis, increasing the chances of successful treatment.

 

Smoking remains the most significant risk factor for lung cancer. However, non-smokers can also develop lung cancer, often due to exposure to environmental factors like radon gas, asbestos, air pollution, or genetic predisposition.For individuals at high risk, such as long-term smokers or those with a family history of lung cancer, regular screening can be essential for early detection. Low-dose computed tomography (LDCT) scans are recommended for high-risk individuals, as they can detect lung cancer in its early stages when treatment options are more effective.

 

Traditional treatment approaches, such as surgery, chemotherapy, and radiation therapy, have made strides in improving patient outcomes. However, the emergence of immunotherapy has revolutionized the landscape of lung cancer treatment. Harnessing the body’s immune system to combat cancer cells, immunotherapy has shown remarkable promise in extending survival and improving the quality of life for lung cancer patients.

 

Understanding Immunotherapy

Immunotherapy is a cutting-edge treatment approach that capitalizes on the body’s immune system to recognize and destroy cancer cells. Unlike traditional treatments that directly attack cancer cells, immunotherapy enhances the natural defenses of the immune system, empowering it to recognize cancer as a foreign invader and mount a targeted response against it.

 

One of the most significant breakthroughs in immunotherapy for lung cancer is the development of immune checkpoint inhibitors. These inhibitors block specific proteins on cancer cells or immune cells, known as immune checkpoints, which prevent the immune system from attacking cancer cells effectively. By inhibiting these checkpoints, the immune system can regain its ability to identify and eliminate cancer cells.

 

Immune Checkpoint Inhibitors in Lung Cancer Treatment

The immune checkpoint inhibitors have shown exceptional promise in the treatment of lung cancer, especially in patients with advanced stages of the disease. Pembrolizumab, nivolumab, and atezolizumab are among the well-known immune checkpoint inhibitors that have demonstrated remarkable efficacy in clinical trials.

 

 

These drugs have been approved for first-line and second-line therapy in advanced non-small cell lung cancer (NSCLC) patients and have improved overall survival rates compared to conventional chemotherapy. Additionally, immune checkpoint inhibitors have exhibited a more favorable side effect profile, with fewer severe adverse events compared to traditional treatments.

 

Combination Therapies: Unlocking the Full Potential

While single-agent immune checkpoint inhibitors have shown substantial success, researchers are now exploring combination therapies to maximize the benefits of immunotherapy. Combining immune checkpoint inhibitors with other immunotherapeutic agents, targeted therapies, or even chemotherapy has demonstrated synergistic effects in lung cancer treatment.

 

Furthermore, novel approaches like personalized neoantigen vaccines are being developed, wherein a vaccine is created using the patient’s unique tumor profile to stimulate their immune system to target cancer cells specifically. These approaches are transforming lung cancer treatment into a more precise and personalized endeavor, improving the chances of successful outcomes.

 

Immunotherapy and Beyond: Potential Challenges and Future Prospects

Despite its unprecedented success, immunotherapy is not without challenges. Some patients do not respond to immunotherapy, and in others, resistance may develop over time. Researchers are actively investigating biomarkers and other predictive tools to identify patients who are most likely to benefit from immunotherapy, enhancing treatment selection and individualizing therapy.Additionally, efforts are underway to understand the mechanisms of resistance and develop strategies to overcome it. Combination therapies, as mentioned earlier, are one avenue being explored to tackle resistance and enhance treatment efficacy.

 

The future of immunotherapy in lung cancer treatment appears promising. Ongoing research, advancements in technology, and a better understanding of the tumor microenvironment will likely lead to the development of novel immunotherapeutic approaches with improved effectiveness and fewer side effects. Immunotherapy’s ability to harness the body’s immune system to fight cancer has transformed the treatment landscape, providing new opportunities for extended survival and enhanced quality of life.

 

 

(The Author is Consultant – Medical Oncology, HCG EKO Cancer Center)

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