<Key Points>
Obtain approval and start sales for epithelial cell sheet for esophageal regeneration
Accelerate development of regenerated cartilage sheet
Start development of the next generation product
Establish a supply chain system
Develop new regenerative medicine supporting products and cultivate earnings opportunities
Promote business alliance for global expansion
Obtain Approval and Start Sales for Epithelial Cell Sheet for Esophageal Regeneration, Establish Supply Chain System
Esophageal Cancer in Japan
According to CellSeed, 22,000 patients within Japan are diagnosed with esophageal cancer every year (90% of the esophageal cancer cases diagnosed within Japan are squamous cell carcinoma), with 11,500 patients dying every year. In addition, the rate of occurrence and death related to esophageal cancer in male patients is five times that of female patients, with five year survival rates for males and females said to be 36% and 44%, respectively. The endoscopic resection surgery (ESD) was posted in the drug price list from 2008 and is on the rise (about 20% of patients diagnosed with esophageal cancer undergo surgery), but its side effect of esophageal stricture after surgery has been recognized as a problem.
Obtain Approval and Start Sales for Epithelial Cell Sheet for Esophageal Regeneration, Establish Supply Chain System
To treat esophageal tear prevent stricture , Advanced Biomedical Science Institute of Tokyo Women's Medical University (TWMU) developed regenerative medicine for esophageal cancer, using epithelial cell sheet for esophageal regeneration. Producing cell sheets by culturing the cells, taken from patient's oral mucosa, in temperature-responsive cell cultureware for 2 weeks. It can prevent esophageal stricture by transplanting cell sheets to esophageal tumor after the excision of esophageal cancer in endoscopic surgery.
There have been 30 clinical cases from 2008 to 2014, 10 cases at TWMU, 10 cases at TWMU and Nagasaki University (Long-distance transportation test: Collect cells at Nagasaki University, Culture at TWMU, Transplant at Nagasaki University), and 10 cases at Karolinska University Hospital (Sweden). CellSeed has concluded Basic Agreement for Development with TWMU and has taken over the research results.

Clinical trial case registrations were completed during the second quarter of fiscal year December 2018 (April 2018), with sales approval application expected to be submitted during the first half of fiscal year December 2019. CellSeed received the "Sakigake Designation Scheme" in February 2017, so is expected to be able to receive sales approval within about six months after application is submitted. Therefore, sales approval is expected to be granted and sales are expected to begin within fiscal year December 2019 (After the National Health Insurance Price Listing is completed), with full scale sales expected to be conducted in fiscal year December 2020. In the near term, establishment of a supply chain ranging from hospitals for oral muscosa membrane sample acquisition, to culturing facility for cell sheet cultivation, and to hospitals for cell sheet transplant is promoted.
In Europe, corporate led clinical trials are being considered in Sweden led by the subsidiary CellSeed Sweden AB, established in May 2015, and deliberations with the European Medicines Agency (EMA) began in 2016 for approval throughout all of Europe. However, the Company is considering commercialization of cell sheet regenerative medicine business in Japan as the top priority of its product development plans, so development of epithelial cell sheet for esophageal regeneration in Europe is considered as a "next generation product" candidate.
As previously explained, the provision of development data to the collaborative partner in Taiwan MetaTech is proceeding smoothly, with MetaTech expected to submit clinical trial notifications within 2018.
Accelerate Development of Regenerated Cartilage Sheet
Regenerated cartilage sheet is the result of research conducted jointly by CellSeed and Professor Masato Sato of Tokai University School of Medicine Department of Orthopedics, and is a treatment designed to be used on patients with damaged and deformed cartilage caused by injuries from sports and osteoarthritis due to aging. Although there are no effective treatments currently available for them, research is being conducted jointly with Professor Sato aiming for the fundamental regeneration of cartilage surface. Knee cartilage is known as "glass cartilage" and differs from cartilage of the ear and nose in its superior cushioning and wear functions, which makes its regeneration difficult. However, regeneration of "glass cartilage" has been confirmed in joint clinical research using "regenerated cartilage sheet."
Based upon the fundamental agreement for development formed with Tokai University, efforts are being promoted to achieve commercialization with strategy negotiations being conducted with the Pharmaceuticals and Medical Devices Agency (PMDA, conducts approval examination), and the Japan Agency for Medical Research and Development (AMED, conducts regenerative medicine research and development) for the leveraging of business in development. In addition, partial development data is being provided to MetaTech of Taiwan during fiscal year December 2018 to help it achieve product commercialization.
According to CellSeed, knee osteoarthritis is a refractory disease where articular cartilage degeneration progresses slowly and the number of patients over the age of 40 within Japan is estimated to be 25.30 million, of which some 8.00 million are estimated to have active symptoms (survey conducted by Tokyo University School of Medicine). In addition, the number of patients is expected to increase due to Japan's aging society, and therefore it is considered a disease that needs to be handled urgently from the aspects of health and longevity of the Japanese, and nursing and medical care expenses.

Research and development for patients' own cells and allogeneic cells are being promoted, with eight cases of clinical research for regenerated cartilage sheet using patients' own cells being conducted by Tokai University and the same university expected to submit application for this treatment as an advanced medical treatment. Preparations for applications have been promoted based upon discussions with the Ministry of Health, Labor and Welfare, and are expected to be considered by the Advanced Medical Treatment Committee after application has been submitted. Based upon the outcome of consideration as an advanced medical treatment, corporate clinical trials are expected to be implemented. And if this treatment is granted advanced medical treatment status, it will be recognized as a treatment, which can be used together with other treatments eligible for medical health insurance despite being excluded from the public medical health insurance system. Furthermore, it has already been decided that CellSeed will be compensated for consigned cell sheet processing for use in advanced medical treatments.
One case of transplant of regenerated cartilage sheet using allogeneic cells has been implemented in February 2017 by Tokai University with favorable results. Ten patients are expected to receive transplants as part of the clinical research expected to be conducted over the next three years, with the bulk of cases expected to be implemented in fiscal year December 2019 (Three cases have been implemented in the first half of fiscal year December 2018). During this time, CellSeed will promote clinical trial preparations, regulatory science strategical consultations and comprehensive regulatory science consultations with a goal of starting corporate clinical trials within fiscal year December 2020.
Status of Business Collaboration with MetaTech of Taiwan
CellSeed granted MetaTech Inc. the sole development, manufacture and sales rights in Taiwan for its cell sheet regenerative medicine business (Epithelial cell sheet for esophageal regeneration, regenerated cartilage sheet) in April 2017. According to the agreement between the two companies, CellSeed will receive a maximum of ¥1.250 billion as milestone income, development and manufacture related data provision fees, and development support fees to support MetaTech's deployment of CellSeed's business in Taiwan. Furthermore, MetaTech has agreed to also pay CellSeed royalty in accordance with sales of any resulting products in the Taiwan market.
As explained previously, provision of partial development data has progressed at a faster than expected pace during the first half of fiscal year December 2018, and this earlier than expected provision of this data has resulted in the payment of ¥325 million during the first half. MetaTech is promoting preparations for clinical trial notification submission for epithelial cell sheet for esophageal regeneration during fiscal year December 2018. Revisions to laws relating to cell treatments, which are considered to be advanced medical treatments, in Taiwan (Expected to be implemented in September 2018) are being promoted and CellSeed's regenerated cartilage sheet is expected to be included in this category.
Promotion of Collaborative Arrangements for Deployment of Business Globally
CellSeed will promote support for its collaborative business partner MetaTech, while at the same time searching for other business partners in various countries of Asia, Europe and North America. As part of this strategy, CellSeed has participated in six events during the first half of the fiscal year, and expects to participate in two more events in August.
