What’s New in Mesothelioma Research?

Researchers are looking for better ways to prevent, diagnose, and treat mesothelioma.

Causes and prevention of mesothelioma

Exposure to asbestos can increase the risk of getting mesothelioma and is a public health concern. Efforts that improve awareness of the dangers of asbestos can help limit exposure in homes, public buildings, and the workplace.

Unfortunately, regulations protecting workers from asbestos exposure are much less stringent in some countries than in others.

Genetics of mesothelioma

Researchers are learning more about gene changes inside mesothelial cells that cause mesothelioma. They have begun to develop newer treatments that target some of these gene changes. These are now being tested in clinical trials.

Doctors have also found some gene changes that run in families that make people more likely to develop mesothelioma when they’re exposed to asbestos. People whose cells have these changes often have a slower growing mesothelioma that responds better to certain drugs.

Many experts now recommend that people with mesothelioma be tested for gene changes that run in families. This can help plan treatment and show if other family members might be at risk for mesothelioma.

Early detection and diagnosis of mesothelioma

Mesothelioma is hard to find early. Most often, it's not diagnosed until it's big enough to cause symptoms and a person goes to a doctor. Researchers are looking for early detection tests, also called screening tests, that might help find mesothelioma before it reaches this point.

Researchers have found certain proteins in the blood, often called biomarkers, that have been linked to mesothelioma, including fibulin-3, osteopontin, and soluble mesothelin-related peptides (SMRPs). More research is needed to figure out if these types of markers are useful in finding mesothelioma early, especially in people at high risk.

Mesothelioma-specific biomarkers might eventually affect a person’s treatment choices and give doctors a better understanding of the likely outcome. Biomarkers might also prove to be a way to see how well treatment is working.

Treatment of mesothelioma

Mesothelioma has historically been challenging to treat, but in recent years, there have been major improvements in treatment. Combinations of chemotherapy and immunotherapy have clearly improved outcomes for many people.

Most experts agree that treatment in a clinical trial should be considered for any type or stage of mesothelioma. This way, people can get the best treatments available, potentially along with new treatments that might be even better. Most of the new and promising treatments discussed here are only available in clinical trials.

Chemo drugs tend to have a limited effect against mesothelioma. In recent years, researchers have learned more about gene and protein changes in mesothelioma cells that make them different from normal cells. This has led to the development of targeted therapies. These treatments target the changes that make cancer cells different from normal, healthy cells.

Some targeted therapies are now being used for mesothelioma, and many others are now being studied.

For example, some new drugs target mesothelin, a protein found in high levels in mesothelioma cells. Other new drugs are targeting changes within mesothelioma cells that help them grow, such as changes in the in BAP1, NF2, and MTAP genes.

To learn more, see Targeted Therapy.

Clinical trials are looking at the value of immunotherapies for mesothelioma. These medicines help the body’s immune system attack the cancer cells.

Checkpoint inhibitors

These medicines help the immune system attack cancer cells. Several of these medicines are now used to treat mesothelioma, either along with chemotherapy or by themselves.

Bispecific antibodies

Monoclonal antibodies are manmade versions of immune system proteins that are designed to attack a specific target. Bispecific antibodies attack 2 different targets. For example, they might target 2 different proteins that help cancer grow. Several bispecific antibodies are now being studied for use against mesothelioma.

Chimeric antigen receptor (CAR) T-cell therapy

In this treatment, immune cells called T cells are removed from the patient’s blood and altered in the lab to have specific receptors called CARs on their surface. These receptors can attach to proteins on the surface of cancer cells.

The T cells are then multiplied in the lab and given back into the patient’s blood, where they can seek out the cancer cells and launch a precise immune attack against them. CAR T-cell therapy has been used mainly to treat some blood cancers, and it’s now being tested for use against mesothelioma.

To learn more about this type of treatment, see Cancer Immunotherapy.

Exposing mesothelioma cells to alternating electric fields, also known as tumor treating fields, TTFields, or TTF, might be helpful when used along with chemotherapy. A portable device that generates such electric fields, known as Optune Lua, is now an option along with chemotherapy to help treat some pleural mesotheliomas that can’t be treated with surgery.

To learn more, see Tumor Treating Fields (TTF) Therapy for Mesothelioma.

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Developed by the American Cancer Society medical and editorial content team with medical review and contribution by the American Society of Clinical Oncology (ASCO).

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Kindler HL, Ismaila N, Bazhenova L, et al. Treatment of Pleural Mesothelioma: ASCO Guideline Update. J Clin Oncol. 2025 Mar 10;43(8):1006-1038.

Tsao AS. Systemic treatment for unresectable malignant pleural mesothelioma. UpToDate. 2025. Accessed at https://www.uptodate.com/contents/systemic-treatment-for-unresectable-malignant-pleural-mesothelioma on November 24, 2025.

 

Last Revised: February 3, 2026

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