Shanghai Juncell Therapeutics Co. Ltd.

SHANGHAI, April 28, 2025 /PRNewswire/ -- Shanghai Juncell Therapeutics Co., Ltd. (Juncell Therapeutics), a clinical-stage biotech specializing in developing innovative IL-2-independent Tumor-Infiltrating Lymphocyte (TIL) therapies for cancer, today announced it will present preclinical data on a feeder-free manufacturing process for IL-2-independent TIL expansion at the 28th Annual Meeting of the American Society of Gene and Cell Therapy (ASGCT), taking place May 13–15, 2025, in New Orleans, LA. The study highlights Juncell Therapeutics' breakthroughs in TIL process development, demonstrating that its proprietary feeder-free system can generate robust, functional TILs from both "hot" and "cold" tumor tissues without relying on high-concentration interleukin-2 (IL-2). These TILs exhibited significant anti-tumor activity in syngeneic patient-derived organoid (PDO) and patient-derived xenograft (PDX) models. By eliminating IL-2 dependence and removing the need for feeder cells, the technology paves the way for safer TIL treatment regimens and reduces manufacturing costs. Presentation Details: Title: Development of A Feeder-Free Process for IL-2-Independent TIL Expansion Poster Number: AMA362 Session: Thursday Poster Reception Date and Time: May 15, 2025, 5:30 PM–7:00 PM Location: Poster Hall Hall I2 About Juncell Therapeutics Juncell Therapeutics is a biotech dedicated to developing high-quality, accessible IL-2 independent TIL therapies for the treatment of solid tumors. Juncell Therapeutics has established its proprietary DeepTIL® cell expansion and NovaGMP® gene modification technology platforms, which are designed to address the key challenges of conventional TIL therapies, making TILs "robust, competent, affordable, and accessible." Two clinical-stage TIL therapies have demonstrated promising safety and efficacy in the treatment of ten types of heavily pretreated advanced solid tumors, including lung cancer, triple-negative breast cancer, pancreatic cancer, high-grade glioma, ovarian cancer, endometrial cancer, cervical cancer, head and neck cancer, bile duct cancer and melanoma. For more information, please visit: Juncell Contact: [email protected] SOURCE Shanghai Juncell Therapeutics Co., Ltd. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

SHANGHAI, March 26, 2025 /PRNewswire/ -- Shanghai Juncell Therapeutics Co., Ltd. (Juncell Therapeutics), a clinical-stage biotech developing innovative IL-2-independent Tumor-Infiltrating Lymphocyte (TIL) therapies for cancers, announced that a preclinical study of innovative pretreatment regimens for cell therapy will be presented at the American Association for Cancer Research (AACR) Annual Meeting, taking place April 25 - 30 in Chicago. This study indicated that hydroxychloroquine (HCQ) could significantly increase the tumor-killing effects via elevating the membrane MHC-I protein levels of tumor cells without affecting TILs'proliferation. In addition, its effect on surface PD-L1 expression was not significant compared with IFN-γ. These results provide preclinical evidence for HCQ pretreatment of the adoptive cell therapy of TILs in clinical trials. Details of the poster presentation are below: Abstract Number: 5827 Abstract Title: Hydroxychloroquine increases the tumor killing efficiency via elevating the membrane MHC-I protein levels of tumor cells Session Title: Immunomodulatory Agents and Interventions Location: Poster Section 29 Poster Board Number: 3 Poster Presentation Time: 2:00 PM - 5:00 PM CST, April 29, 2025 About Juncell Therapeutics Juncell Therapeutics is a biotech dedicated to developing high-quality, accessible TIL cell therapies for the treatment of solid tumors. Juncell Therapeutics has established its proprietary DeepTIL® cell expansion and NovaGMP® gene modification technology platforms, which are designed to address the key challenges of conventional TIL therapies, making TILs "robust, competent, affordable, and accessible." Two clinical-stage TIL therapies have demonstrated promising safety and efficacy in the treatment of ten types of heavily pretreated advanced solid tumors, including lung cancer, triple-negative breast cancer, pancreatic cancer, high-grade glioma, ovarian cancer, endometrial cancer, cervical cancer, head and neck cancer, bile duct cancer and melanoma. 7 of these late-stage tumor patients have achieved complete response, and the longest tumor-free survival time is over 3 years. For more information, please visit: Juncell Contact: [email protected] SOURCE Shanghai Juncell Therapeutics Co., Ltd. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

SHANGHAI, May 24, 2024 /PRNewswire/ -- Shanghai Juncell Therapeutics Co., Ltd. (Juncell Therapeutics), a clinical-stage biotech developing innovative Tumor-Infiltrating Lymphocyte (TIL) therapies for cancers, announced latest clinical research results on GC203 (a novel non-viral vector gene-modified TIL therapy engineered with membrane-bound IL-7). These data will be presented at the American Society of Clinical Oncology (ASCO) Annual Meeting taking place on May 31 - June 4, 2024. Researchers tested GC203 on patients diagnosed with recurrent ovarian cancer, without the combination of IL-2 administration or aggressive lymphodepletion. The objective of the study was to determine the safety and efficacy of this treatment. A total of 20 patients were enrolled between 09/2021 and 01/2024 in the open-label single-center trial, in which 18 patients were evaluable. The evaluable patients were with an ECOG PS of 1 (55.6%) or 2 (44.4%) and received a median of 5 previous systemic therapies (range: 2-11). 9 (50%) patients had 3 or more tumor lesions. The median target lesion size was 57 (range: 13-146) mm. GC203 showed promising results in patients with recurrent or metastatic ovarian cancer. The safety profile was improved significantly compared with conventional TIL therapies, thanks to a low-intensity pretreatment and the elimination of IL-2 combination. Most of the Adverse Events (AEs) were grade 1 or grade 2 and could be alleviated or cured by symptomatic treatment. No grade 5 event occurred. By the cutoff date of 01/2024, the investigator-assessed Objective Response Rate (ORR) was 33.3% (95% CI: 16.3 - 56.3), including 11.1% Complete Response (CR). The Disease Control Rate (DCR) was 83.3% (95% CI, 60.8 - 94.2). And the 12-month Overall Survival (OS) rate was 68.8% (95% CI: 49.3 - 95.9). The median OS was not mature as data cut-off. Presentation Details Abstract Number: 5552 Abstract Title: A phase I single-arm, open-label trial of engineering tumor-infiltrating lymphocytes with membrane-bound lL-7 for recurrent ovarian cancer. Session Type and Title: Poster Session - Gynecologic Oncology Poster Presentation Time: 9:00 AM - 12:00 PM CDT, June 3, 2024 Presenter: Dr. Jing Guo, Shanghai Tenth People's Hospital The abstract is available on the ASCO website. About Ovarian Cancer Ovarian cancer has the highest mortality rate among gynecologic cancers. 70% of patients are diagnosed at an advanced stage. 70% of patients with advanced ovarian cancer have a survival time of less than five years. More than 200,000 people worldwide die from ovarian cancer each year, indicating a significant unmet clinical need. The primary treatment for advanced ovarian cancer is platinum-based chemotherapy. Ovarian cancer is insensitive to immunotherapy, with an ORR of less than 10%. Effective treatment options are limited. About GC203 GC203 is a novel non-viral vector gene-modified TIL therapy developed leveraging Juncell Therapeutics' proprietary DeepTIL® cell expansion platform and NovaGMP® gene modification platform. DeepTIL® enables TILs to be potent enough that no IL-2 combination will be required after infusion, and the intensity of pretreatment could be lower. NovaGMP® modifies T cells with a high efficiency comparable with the Lentiviral vector in an economic way. GC203 is engineered with self-associating membrane-bound interleukin-7, which can maintain the stemness of memory T cells, activate internal immune cells and avoid systemic toxicities. About Juncell Therapeutics Juncell Therapeutics is a biotech dedicated to developing high-quality, accessible TIL cell therapies for the treatment of solid tumors. Juncell Therapeutics has established its proprietary DeepTIL® cell expansion and NovaGMP® gene modification technology platforms, which are designed to address the key challenges of conventional TIL therapies, making TILs "robust, competent, affordable, and accessible." Two clinical-stage TIL therapies have demonstrated promising safety and efficacy in the treatment of nine types of heavily pretreated advanced solid tumors, including lung cancer, triple-negative breast cancer, pancreatic cancer, high-grade glioma, ovarian cancer, endometrial cancer, cervical cancer, bile duct cancer and melanoma. 7 of these late-stage tumor patients have achieved CR, and the longest tumor-free survival time is approaching 3 years. For more information, please visit: Juncell Contact: [email protected] SOURCE Shanghai Juncell Therapeutics Co., Ltd.