Immunotherapy for Esophageal Cancer

Immunotherapy is the use of medicines that help a person’s own immune system find and destroy cancer cells more effectively. It can be used to treat some people with esophagus cancer.

Immune checkpoint inhibitors

An important part of the immune system is its ability to keep itself from attacking normal cells in the body. To do this, it uses “checkpoints” – proteins on immune cells that need to be turned on (or off) to start an immune response. Cancer cells sometimes use these checkpoints to avoid being attacked by the immune system.

Immune checkpoint inhibitor drugs target these checkpoint proteins, which helps restore the immune response against esophagus cancer cells.

In certain cases, when no other treatment options are available, these immunotherapy drugs can be used for people whose esophageal cancer has tested positive for specific gene changes, such as a high level of microsatellite instability (MSI-H), or changes in one of the mismatch repair (MMR) genes.

PD-1 inhibitor

Pembrolizumab (Keytruda) targets PD-1, a protein on T cells (a type of immune system cell). The PD-1 protein normally helps keep T cells from attacking other cells in the body. By blocking PD-1, this drug boosts the immune response against cancer cells. This can shrink some tumors or slow their growth.

This drug can be used in some people with advanced cancer of the esophagus, typically after another treatment has been tried. It can also be used to treat some advanced cancers of the gastroesophageal junction (GEJ), after at least 2 prior treatments (including chemotherapy and targeted therapy for HER2).

Pembrolizumab is given as an intravenous (IV) infusion, typically every 3 weeks.

Possible side effects of pembrolizumab 

Common side effects of this drug can includefeeling week or tired, muscle or joint pain, loss of appetite, constipation or diarrhea, shortness of breath, skin rash, itching, nausea, cough, and fever. 

Other, more serious side effects that can happen less often include:

Infusion reactions: Some people might have an infusion reaction while getting this drug. This is like an allergic reaction, and can include fever, chills, flushing of the face, rash, itchy skin, feeling dizzy, wheezing, and trouble breathing. It’s important to tell your doctor or nurse right away if you have any of these symptoms while getting this drug.

Autoimmune reactions: This drug works by basically removing the brakes on the body’s immune system. Sometimes the immune system starts attacking other parts of the body, which can cause serious or even life-threatening problems in the lungs, intestines, liver, hormone-making glands, kidneys, skin, or other organs.

It’s very important to report any new side effects to your health care team promptly. If serious side effects do occur, treatment may need to be stopped and you may get high doses of corticosteroids to suppress your immune system.

More information about immunotherapy

To learn more about how drugs that work on the immune system are used to treat cancer, see Cancer Immunotherapy.

To learn about some of the side effects listed here and how to manage them, see Managing Cancer-related Side Effects.

The American Cancer Society medical and editorial content team

Our team is made up of doctors and oncology certified nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.

Bendell J and Yoon HH. Progressive, locally advanced unresectable, and metastatic esophageal and gastric cancer: Approach to later lines of systemic therapy. Goldberg RM, ed. UpToDate. Waltham, MA: UpToDate Inc. https://www.uptodate.com (Accessed on January 22, 2020).

Ku GY and Ilson DH. Chapter 71 – Cancer of the Esophagus. In: Niederhuber JE, Armitage JO, Dorshow JH, Kastan MB, Tepper JE, eds. Abeloff’s Clinical Oncology. 6th ed. Philadelphia, Pa. Elsevier: 2020.

National Comprehensive Cancer Network (NCCN). NCCN Clinical Practice Guidelines in Oncology: Esophageal and Esophagogastric Junction Cancers. V.4.2019. Accessed at www.nccn.org/professionals/physician_gls/pdf/esophageal.pdf on Jan 21, 2020.

Posner MC, Goodman KA, and Ilson DH. Ch 52 - Cancer of the Esophagus. In: DeVita VT, Hellman S, Rosenberg SA, eds. DeVita, Hellman, and Rosenberg’s Cancer: Principles and Practice of Oncology. 11th ed. Philadelphia, Pa: Lippincott-Williams & Wilkins; 2019. 

References

Bendell J and Yoon HH. Progressive, locally advanced unresectable, and metastatic esophageal and gastric cancer: Approach to later lines of systemic therapy. Goldberg RM, ed. UpToDate. Waltham, MA: UpToDate Inc. https://www.uptodate.com (Accessed on January 22, 2020).

Ku GY and Ilson DH. Chapter 71 – Cancer of the Esophagus. In: Niederhuber JE, Armitage JO, Dorshow JH, Kastan MB, Tepper JE, eds. Abeloff’s Clinical Oncology. 6th ed. Philadelphia, Pa. Elsevier: 2020.

National Comprehensive Cancer Network (NCCN). NCCN Clinical Practice Guidelines in Oncology: Esophageal and Esophagogastric Junction Cancers. V.4.2019. Accessed at www.nccn.org/professionals/physician_gls/pdf/esophageal.pdf on Jan 21, 2020.

Posner MC, Goodman KA, and Ilson DH. Ch 52 - Cancer of the Esophagus. In: DeVita VT, Hellman S, Rosenberg SA, eds. DeVita, Hellman, and Rosenberg’s Cancer: Principles and Practice of Oncology. 11th ed. Philadelphia, Pa: Lippincott-Williams & Wilkins; 2019. 

Last Medical Review: March 20, 2020 Last Revised: March 20, 2020

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