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MesotheliomaApril 2024Summary reviewed September 2026

New Drug Combo Extended Survival by 2 Months for Rare Aggressive Lung Cancer

Patients with nonepithelioid mesothelioma — a rare, aggressive lung cancer — lived 9.3 months on average when treated with pegargiminase plus chemotherapy, compared to 7.7 months with chemotherapy alone. The treatment also slowed cancer growth and was generally well-tolerated.

What the trial was testing

The ATOMIC-MESO enrolled 249 patients with mesothelioma. The study was sponsored by Polaris Group and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was mid-stage testing (phase 2/3). Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

Median survival was 9.3 months with the new combo versus 7.7 months with standard chemotherapy alone.

JAMA oncology · 2024 · NCT02709512

These findings — that patients lived 9.3 months on average with the new combo versus 7.7 months with standard treatment — were published in the JAMA oncology and represent the headline result of the study.

Researchers tracked outcomes across 249 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with mesothelioma, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

If you have nonepithelioid mesothelioma, this combination showed meaningful survival benefit in a large trial. The treatment is not yet FDA-approved, but these results are promising. Ask your oncologist whether this approach or similar clinical trials are available to you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.