Tumor Treating Fields Plus Standard of Care Chemotherapy Significantly Extends Median Overall Survival by 6.1 Months in STELLAR Phase 2 Registration Trial in Mesothelioma Compared to Historical Control
ST. HELIER, Jersey--(BUSINESS WIRE)--Sep 5, 2018--Novocure (NASDAQ: NVCR) announced final results from its STELLAR phase 2 registration trial in mesothelioma, demonstrating a significant extension in median overall survival among patients treated with Tumor Treating Fields plus standard of care chemotherapy compared to historical control data of patients who received standard of care chemotherapy alone. Malignant pleural mesothelioma patients who received Tumor Treating Fields with pemetrexed and cisplatin or carboplatin experienced median overall survival of 18.2 months (95 percent CI, 12.1-25.8 months) compared to 12.1 months in a historical control. Tumor Treating Fields is a cancer therapy that uses electric fields tuned to specific frequencies to disrupt cell division, inhibiting tumor growth and causing affected cancer cells to die. The final STELLAR results will be presented at the IASLC 19th World Conference on Lung Cancer hosted by the International Association for the Study of Lung Cancer (IASLC) on Sept. 25, 2018, in Toronto.
“The final results of the STELLAR trial demonstrate an impressive extension of median overall survival in the treatment of malignant pleural mesothelioma with no increase in systemic toxicity,” said Giovanni Luca Ceresoli, MD, Head of Pulmonary Oncology at the Humanitas Gavazzeni Hospital in Bergamo, Italy, and an investigator in the STELLAR trial. “Mesothelioma patients face an urgent unmet need for additional therapies that improve survival. Based on these data, I believe Tumor Treating Fields represent an extremely promising therapeutic option that, if approved, should be added to standard of care chemotherapy for the treatment of malignant pleural mesothelioma.”
Secondary endpoints also were improved compared to the historical control. Patients who received Tumor Treating Fields in combination with pemetrexed and cisplatin or carboplatin experienced a median progression free survival of 7.6 months (95 percent CI, 6.7-9.8 months) compared to 5.7 months in the historical control. Partial responses were seen in 40.3 percent of patients, and clinical benefit, either partial response or stable disease, was seen in 97.2 percent of patients. No serious device-related adverse events were reported. Skin irritation was reported in 46 percent of patients using Tumor Treating Fields, with only 4 patients (5 percent) reporting grade 3 skin irritation.
The single-arm, open-label, multi-center trial was designed to test the efficacy and safety of Tumor Treating Fields in combination with standard of care chemotherapy, pemetrexed combined with cisplatin or carboplatin, in 80 patients with unresectable, previously untreated malignant pleural mesothelioma. The primary endpoint was overall survival and secondary endpoints were response rate, progression free survival and adverse events. Median age of patients was 67, 84 percent were male, 56 percent were smokers, 16 percent had metastatic disease, 44 percent had an ECOG PS of 1, and 66 percent had epithelioid histology. The historical control for this trial was the 2003 pemetrexed phase 3 registration trial, which had a similar percentage of patients with epithelioid histology.
Novocure received a Humanitarian Use Device (HUD) designation for the use of Tumor Treating Fields for the treatment of malignant pleural mesothelioma in 2017 and plans to submit a Humanitarian Device Exemption (HDE) application to the U.S. Food and Drug Administration (FDA) for approval later this year.
“We are extremely pleased by the results of the STELLAR trial,” said Dr. Eilon Kirson, Novocure’s Chief Science Officer and Head of Research and Development. “We believe the results support the use of Tumor Treating Fields in our first indication outside of the brain. We are now one step closer to commercializing Tumor Treating Fields as a treatment for malignant pleural mesothelioma.”
Novocure will host an analyst and investor briefing Tuesday, Sept. 25, 2018 from 12:30 p.m. to 2 p.m. EDT in Toronto to review data presented at IASLC and to provide a general update on research and development activities. The event will be webcast live and can be accessed from the Investor Relations page of Novocure’s website, www.novocure.com/investor-relations. The webcast will be available for replay for at least 14 days following the event.
Tumor Treating Fields in combination with standard of care chemotherapy is an investigational treatment for malignant pleural mesothelioma and is not approved for this indication.
About Malignant Pleural Mesothelioma
Malignant pleural mesothelioma is a rare thoracic solid tumor cancer that has been strongly linked to asbestos exposure. It has a long latency period of at least 20-30 years following exposure, and global incidence is still increasing in countries where asbestos is still in use. There are approximately 3,000 new cases of mesothelioma annually in the United States. The prognosis of mesothelioma patients is very poor, with a median overall survival of approximately 12 months in most reported studies.
Novocure is an oncology company developing a profoundly different cancer treatment utilizing a proprietary therapy called Tumor Treating Fields, the use of electric fields tuned to specific frequencies to disrupt solid tumor cancer cell division. Novocure’s commercialized product is approved for the treatment of adult patients with glioblastoma. Novocure has ongoing or completed clinical trials investigating Tumor Treating Fields in brain metastases, non-small cell lung cancer, pancreatic cancer, ovarian cancer and mesothelioma.
Headquartered in Jersey, Novocure has U.S. operations in Portsmouth, New Hampshire, Malvern, Pennsylvania and New York City. Additionally, the company has offices in Germany, Switzerland, Japan and Israel. For additional information about the company, please visit www.novocure.com or follow us at www.twitter.com/novocure.
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