Immunotherapy Drugs Causing Vision Issues

Treatment & Doctors
Reading Time: 3 mins
Publication Date: 03/27/2018
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How to Cite Asbestos.com’s Article

APA

Povtak, T. (2021, September 21). Immunotherapy Drugs Causing Vision Issues. Asbestos.com. Retrieved December 5, 2022, from https://www.asbestos.com/news/2018/03/27/immunotherapy-drugs-vision-issues/

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Povtak, Tim. "Immunotherapy Drugs Causing Vision Issues." Asbestos.com, 21 Sep 2021, https://www.asbestos.com/news/2018/03/27/immunotherapy-drugs-vision-issues/.

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Povtak, Tim. "Immunotherapy Drugs Causing Vision Issues." Asbestos.com. Last modified September 21, 2021. https://www.asbestos.com/news/2018/03/27/immunotherapy-drugs-vision-issues/.

The U.S. Food and Drug Administration (FDA) is investigating the potential for three immunotherapy drugs to cause retinal detachment and vision loss.

The FDA will consider adding eye toxicities to the warning labels for pembrolizumab (Keytruda), nivolumab (Opdivo) and ipilimumab (Yervoy), which have shown promise in clinical trials involving malignant mesothelioma.

All three have already been approved by the FDA for use with metastatic melanoma. Keytruda and Opdivo also have approval for head and neck cancers, colorectal cancers and certain non-small cell lung cancers.

The FDA used its Adverse Event Reporting System (FAERS) to announce its concerns over the eye toxicities some patients experienced. The three drugs were listed in the category for “Potential Signal of a Serious Risk/New Safety Information.”

The FDA notice said it would evaluate the need for regulatory action.

Patients with Mesothelioma Benefit

Although none of the drugs have been approved for use with mesothelioma, select patients have been using them in clinical trials or as part of a limited-use program, and some very successfully.

Mesothelioma survivor Gene Hartline in Florida, for example, believed his health improved considerably after he started taking Opdivo.

Walter Merth, a mesothelioma survivor from Pennsylvania, credits his dramatic turnaround to post-surgery therapy that includes Keytruda.

Both told Asbestos.com the side effects they experienced were minimal.

There are 10 ongoing mesothelioma clinical trials across the country today involving Keytruda. There are six trials for Opdivo recruiting patients, and four for Yervoy.

Serious Side Effects Rare

These three immunotherapy drugs are known as checkpoint inhibitors. They work by countering cancer cell signals that stop a patient’s immune system from attacking. These drugs essentially unmask the cancer cells and allow the immune system to destroy them.

Serious side effects are rare with most immunotherapy drugs, but they do occur and often prompt the FDA to act.

According to one study published in 2016, a metastatic melanoma patient treated with Yervoy lost vision in one eye four months after treatment began and started losing vision intermittently in the other eye a month later. The vision loss was attributed to an immune-related adverse reaction to the drug.

In 2017, two clinical trials for multiple myeloma involving Keytruda in combination with two immunomodulatory agents were halted after researchers reported an excess of deaths. The FDA then halted all trials involving Keytruda in combination with Revlimid and Pomalyst.

FDA Still Encouraging Use

The FDA issued a statement from Janet Woodcock, director of the FDA Center for Drug Evaluation and Research: “The FDA still believes the benefits of taking these drugs for their approved uses and as indicated in the labels continue to outweigh their risks.”

Most oncologists remain optimistic that Keytruda, Opdivo and Yervoy will become part of multidisciplinary treatment for mesothelioma, despite the most recent setback.

The labels for all three drugs already list uveitis as a potential adverse reaction. Uveitis is a serious inflammation of an eye layer covering the inner retina.

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