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5 Research Breakthroughs Mesothelioma Patients Should Know

Stem cell research

Scientists around the world are striving to develop more effective treatment options for mesothelioma.

The asbestos-related cancer has a five-year survival rate of less than 10 percent. Most patients live around one year after diagnosis.

Developing better treatments to control the cancer is necessary. Researchers are working on a number of options.

Some of these options involve new immunotherapy drugs, innovative methods of drug delivery and different combinations of treatments.

This research is being conducted at some of the nation’s best cancer centers. For example, Penn Medicine’s Abramson Cancer Center is developing photodynamic therapy for mesothelioma, while Stanford University School of Medicine is working on stem cell therapy.

These promising breakthroughs don’t happen overnight. It takes years of research and development to get these treatments tested and proven through clinical trials.

It also takes participants. The more mesothelioma patients who volunteer to join clinical trials, the closer we come to controlling or one day curing the cancer.

Immunotherapy for Mesothelioma

In June 2017, promising results from a phase II clinical trial were published by French researchers. Out of 108 mesothelioma patients, approximately half responded well to combination therapy with nivolumab (Opdivo) and ipilimumab (Yervoy).

That high response rate is unusual in mesothelioma research.

Researchers were so shocked by the results that they designed a phase III trial to continue testing the drug combination in a larger group of patients. It could become the first immunotherapy regimen approved by the U.S. Food and Drug Administration (FDA) to treat mesothelioma.

Pembrolizumab, otherwise known as Keytruda, is another immunotherapy drug showing promise in mesothelioma research.

In a 2017 study by Penn Medicine, tumors shrank in 14 of 25 pleural mesothelioma patients taking Keytruda. The overall survival of the patients was 18 months, compared to 12 months for patients treated only with chemotherapy.

Using Nanocells to Deliver Treatment

Australian researchers introduced a new therapy for mesothelioma in 2015 that put one patient nearly into full remission.

Partial or full remission is rarely reported among people with mesothelioma, which indicates the potential of this research.

The study involved nanocells, which are derived from bacteria and modified to serve as a delivery vehicle for anti-cancer treatments.

The anti-cancer treatment used in this phase I study involved microRNA, which is genetic material similar to DNA. The microRNA used in the study stimulates the immune system to attack mesothelioma tumors.

Researchers did not expect to see such a positive response in the phase I study. Research is continuing into further phases.

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Photodynamic Therapy

Clinical trials are investigating photodynamic therapy for mesothelioma in combination with surgery.

The preliminary results indicate photodynamic therapy can kill remaining cancer cells left behind after surgery. This can reduce the risk of local cancer recurrence and help patients live longer.

Researchers at the Abramson Cancer Center have led important studies on photodynamic therapy for mesothelioma in recent years. They are currently recruiting for a phase II clinical trial combining photodynamic therapy with surgery and chemotherapy.

Targeting Mesothelin

Mesothelin is a protein and antigen made by mesothelioma cancer cells. Researchers are developing drugs that target mesothelin to kill mesothelioma cells and leave healthy cells unharmed.

Mesothelin-targeting drugs under development include:

Stem Cell Vaccine for Mesothelioma

The Stanford University School of Medicine is developing a stem cell vaccine as a treatment option for mesothelioma. Their research is currently being conducted on mice.

The hope is stem cells may be used to prevent and treat mesothelioma.

People with a history of asbestos exposure might be able to take the vaccine to prevent mesothelioma. The vaccine might also help mesothelioma patients live longer by controlling cancer growth.

While many of these breakthroughs are in early phases of testing, the research conducted today is paving the way for treatments of tomorrow.


Michelle Whitmer, Content Writer at Asbestos.com

Joining the team in February 2008 as a writer and editor, Michelle Whitmer has translated medical jargon into patient-friendly information at Asbestos.com for more than eight years. Michelle is a registered yoga teacher, a member of the Academy of Integrative Health & Medicine, and was quoted by The New York Times on the risks of asbestos exposure. Read More

Sources
  1. American Society of Clinical Oncology. (2017, June 5). Early Research Suggests First Immunotherapy for Mesothelioma on the Horizon.
    Retrieved from: https://www.asco.org/about-asco/press-center/news-releases/early-research-suggests-first-immunotherapy-mesothelioma
  2. American Cancer Society. (2016, February 17). What’s New in Malignant Mesothelioma Research and Treatment?
    Retrieved from: https://www.cancer.org/cancer/malignant-mesothelioma/about/new-research.html
  3. Scott, S. & Branley, A. (2015, June 14). Asbestos-related cancer treatment breakthrough leaves Australian researchers optimistic.
    Retrieved from: http://www.abc.net.au/news/2015-06-15/mesothelioma-treatment-breakthrough-asbestos-cancer-research/6542562
  4. Simone, C.B. & Cengel, K.A. (2014). Photodynamic Therapy for Lung Cancer and Malignant Pleural Mesothelioma.
    Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4272687/
  5. Penn Medicine. (2017, March 20). Pembrolizumab Shows Promise in Treatment of Mesothelioma. Retrieved from: https://www.pennmedicine.org/news/news-releases/2017/march/pembrolizumab-shows-promise-in-treatment-of-mesothelioma

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