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Immunotherapy

Cancer Immunotherapy: How It Helps the Immune System Fight Cancer

Discover how cancer immunotherapy works by empowering your body's immune system to recognize, target, and destroy cancer cells effectively.
3 min readBy Dr Amit VermaPublished 28 July 2026Updated 27 August 2026

Overview

The exact mechanism depends on the type of immunotherapy being used.

  • Remove signals that prevent immune cells from attacking cancer
  • Stimulate the body’s immune response against cancer
  • Improve the immune system’s ability to control cancer growth

Which Cancers Can Be Treated with Immunotherapy?

Immunotherapy may be recommended for selected patients with cancers such as:

Not every patient with these cancers will benefit from immunotherapy. The decision depends on factors such as the type and stage of cancer, previous treatments, overall health, and specific biomarker test results.

  • Lung cancer
  • Melanoma
  • Kidney cancer
  • Bladder cancer
  • Head and neck cancer
  • Liver cancer
  • Certain colorectal cancers
  • Hodgkin lymphoma
  • Some gynecological cancers

What Are the Benefits of Immunotherapy?

For appropriately selected patients, immunotherapy may offer several potential benefits, including:

However, treatment outcomes vary from person to person, and no treatment can guarantee a specific result.

  • A more targeted treatment approach
  • Durable responses in some patients
  • Treatment for certain advanced cancers
  • Possibility of combining with other cancer treatments
  • Improved disease control in selected cases

Is Immunotherapy Better Than Chemotherapy?

Immunotherapy and chemotherapy work in different ways.

Chemotherapy directly destroys rapidly growing cancer cells, while immunotherapy helps the immune system recognize and fight cancer.

Depending on the cancer type, stage, and treatment goals, doctors may recommend:

The most appropriate treatment plan is based on each patient’s individual condition.

  • Immunotherapy alone
  • Chemotherapy alone
  • Immunotherapy combined with chemotherapy
  • Immunotherapy with targeted therapy
  • Immunotherapy before or after surgery in selected situations

The Role of Precision Oncology

Modern cancer care increasingly focuses on precision oncology, where treatment decisions are guided by clinical findings, pathology, molecular testing, and biomarker analysis.

Identifying the right patients for immunotherapy is an important part of this personalized approach. Biomarker testing can help oncologists determine whether immunotherapy is likely to play a role in the treatment plan.

At Dr AV Institute, treatment recommendations are based on a comprehensive evaluation of the patient’s diagnosis, medical history, pathology findings, and relevant molecular information to develop a personalized cancer treatment strategy.

Frequently Asked Questions

1. Can every cancer patient receive immunotherapy? No. Immunotherapy is suitable only for selected patients and depends on the type of cancer, biomarker results, previous treatments, and overall health.

2. How is immunotherapy given? Most immunotherapy medicines are administered through intravenous (IV) infusion at scheduled intervals, although some treatments are available in other forms depending on the medication.

3. Can immunotherapy be combined with other treatments? Yes. In selected patients, immunotherapy may be combined with chemotherapy, targeted therapy, radiation therapy, or surgery as part of the overall treatment plan.

4. Does immunotherapy have side effects? Yes. Like all cancer treatments, immunotherapy can cause side effects. Your oncology team will monitor you closely and provide appropriate management if side effects occur.

The information on this website is intended for general educational purposes and does not constitute medical advice, diagnosis or treatment.

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