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Condition Guide

New Treatments & Clinical Trials for Mesothelioma

Last updated May 2026Data from ClinicalTrials.gov149 active trials
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Mesothelioma is a rare cancer of the lining around the lungs or abdomen caused almost exclusively by asbestos exposure, with a long latency period of 20–50 years. It is an aggressive disease with a poor prognosis, but combination immunotherapy has produced responses that were unimaginable with chemotherapy alone.

What's actually going on in research

Nivolumab plus ipilimumab — combining two checkpoint inhibitors — has become a new first-line standard for unresectable pleural mesothelioma, producing durable responses in a disease where chemotherapy produced only modest benefit. Surgery remains controversial and is being studied in large head-to-head trials to determine whether it extends life in selected patients. Antibody-drug conjugates targeting mesothelin, which is highly expressed in mesothelioma, are in active clinical trials.

Dual checkpoint immunotherapy

Combining nivolumab and ipilimumab as first-line treatment for pleural mesothelioma improved survival over chemotherapy in a landmark trial, and follow-on trials are testing more combinations.

Mesothelin-targeted therapy

Antibody-drug conjugates and immunotoxins targeting mesothelin — a protein highly expressed in mesothelioma — are in mid-stage trials for patients who have progressed on prior therapy.

Surgery in pleural mesothelioma

Whether radical pleurectomy/decortication or other surgical approaches extend survival is being evaluated in properly powered head-to-head trials, as this question has been debated for decades.

What to know before you search

Eligibility requires confirmed malignant pleural or peritoneal mesothelioma, performance status, prior chemotherapy history, and tissue for mesothelin expression testing.

What types of trials are currently open

  • Immunotherapy trialsTesting dual and novel checkpoint inhibitor combinations for pleural and peritoneal mesothelioma.
  • Mesothelin-targeted trialsEvaluating antibody-drug conjugates, CAR-T cells, and immunotoxins targeting mesothelin.
  • Surgical trialsTesting extended pleurectomy vs. chemotherapy-only approaches head-to-head.
  • Peritoneal mesothelioma trialsEvaluating HIPEC, systemic therapy, and immunotherapy for abdominal mesothelioma.
  • Supportive care trialsTesting management of dyspnea, pleural effusion, and pain in advanced mesothelioma.

Recently added Mesothelioma trials

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