On December 16, 2016 Celsion Corporation (NASDAQ:CLSN) reported an update on its Phase III OPTIMA program for ThermoDox, Celsion’s proprietary heat-activated liposomal encapsulation of doxorubicin in combination with radiofrequency ablation (RFA) in primary liver cancer, also known as hepatocellular carcinoma (HCC) (Press release, Celsion, DEC 16, 2016, View Source [SID1234517095]). The Phase III OPTIMA Study is expected to enroll up to 550 patients at up to 75 clinical sites in the United States, Europe, China and Asia Pacific, and will evaluate ThermoDox in combination with optimized RFA, which will be standardized to a minimum of 45 minutes across all investigators and clinical sites for treating lesions three to seven centimeters, versus standardized RFA alone.
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The Company recently met with the China Food and Drug Administration (CFDA) to discuss the ongoing Phase 3 OPTIMA program and regulatory pathway for ThermoDox in China. During the meeting, Celsion presented the final overall survival data from the Chinese patient cohort of the HEAT study, which demonstrated a survival benefit in patients treated with ThermoDox plus optimized RFA versus optimized RFA alone. The CFDA informed Celsion that if the ongoing Phase 3 OPTIMA trial is successful, the trial could serve as the basis for a direct regulatory filing in China without the need to file for prior approval in the U.S. or European Union which is currently required for foreign company application. This would allow the Company to accelerate its plans for a regulatory filing in China and, if approved, provide for a significantly earlier launch date in China than originally expected.
"We are building momentum with our efforts for ThermoDox in the Asia Pacific region, particularly China, which represents a significant market opportunity with over 50% of new diagnosed cases of this devastating cancer," stated Michael H. Tardugno, Celsion’s chairman, president and chief executive officer. "All Chinese sites will be fully activated by early 2017, enrollment is on pace to meet our objective of fully enrolling the trial by the first quarter of 2018, and we have advanced our manufacturing in China with Hisun to support a potential future launch in this region with impressive gross margins. We believe that the remarkable data from the Chinese cohort of the HEAT study underscores the potentially curative nature of ThermoDox in patients with primary liver cancer, and we are pleased that the CFDA has both recognized its potential and offered a straightforward path to a regulatory filing in China."
In support of its efforts in China, Celsion reported that recent bioequivalence studies of ThermoDox produced in China by Hisun are equivalent to batches of ThermoDox produced at its United States manufacturing site.
In addition, Celsion reported that the Company’s management team recently met with the Ministry of Health in Vietnam and based on that meeting, it will move forward with launching additional trial sites for the OPTIMA study in the country. Celsion expects to have approximately 5 additional clinical trial sites in Vietnam activated by early 2017. Vietnam represents a significant market for ThermoDox where HCC incidence rates are among the world’s highest.
About the OPTIMA Study
The Phase III OPTIMA Study is expected to enroll up to 550 patients in up to 75 clinical sites in the United States, Europe, China and Asia Pacific, and will evaluate ThermoDox in combination with optimized RFA, which will be standardized to a minimum of 45 minutes across all investigators and clinical sites for treating lesions three to seven centimeters, versus standardized RFA alone. The primary endpoint for the trial is Overall Survival, which is supported by post-hoc analysis of data from the Company’s 701 patient HEAT Study, where optimized RFA has demonstrated the potential to significantly improve survival when combined with ThermoDox. The statistical plan calls for two interim efficacy analyses by an independent Data Monitoring Committee (iDMC).