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Science
May 22, 2026
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Unlocking Immunotherapy: The Future of Cancer and Disease Treatment

AI Summary
Immunotherapy is a revolutionary approach to treating diseases, including cancer, by harnessing the power of the immune system. This treatment has shown significant promise in recent years, with numerous clinical trials and approved therapies for various types of cancer and other conditions.

What is Immunotherapy?

Immunotherapies are biological treatments that harness the immune system to prevent, control and fight diseases and other conditions. The most familiar are vaccines, which train the immune system to recognise targets such as invading pathogens. Other immunotherapies boost immune responses when they are too weak, or dampen them down when they are out of control. Still others draw on engineered immune cells or lab-made antibodies to disrupt disease processes.

The Evolution of Immunotherapy

Efforts to prevent disease by boosting the immune system date back thousands of years, but advanced therapies for a wide range of illnesses have come to the fore in the past two decades. A global registry of clinical trials listed 1,257 trials of immunotherapies between 2006 and 2016. The figure leapt to 4,591 in the past decade.

How Do Cancer Immunotherapies Work?

Cancer patients have seen great benefits from immunotherapies and dozens are now approved for more than 30 types of cancer. Some tumours evade the body’s defences by switching off immune cells, but antibody-based drugs – called checkpoint inhibitors – reactivate them so they can recognise and attack the malignancies.

The Future of Immunotherapy: Beyond Cancer

Researchers are now testing whether existing immunotherapies can help a broader range of patients. This includes treating allergies, infections, brain diseases, and autoimmune disorders. Some of the most exciting new immunotherapies draw on recent Nobel prizewinning work on regulatory T-cells, or Tregs, which can be used to dampen down immune responses.

The Potential of Tregs in Immunotherapy

Tregs are unusual immune cells that stand the immune system down once the threat has been dealt with. Therapies are in the pipeline for dementia and autoimmune diseases from type 1 diabetes and rheumatoid arthritis to lupus and chronic inflammation. The potential for Tregs is vast, and researchers believe that half of all deaths have a component that is immunological.