Shanghai Henlius Biotech, Inc.

LUND, SE / ACCESS Newswire / June 8, 2026 / Alligator Bioscience (STO:ATORX) today comments on a recent update regarding patient recruitment in the ongoing Phase 3 clinical trial of HLX22, developed by Shanghai Henlius Biotech, Inc. According to communication shared by Henlius, the first patients have now been dosed in all regions participating in the global Phase 3 study of HLX22, including China, Japan, Korea, Latin America, Australia, the United States and Europe. HLX22 is an innovative anti-HER2 monoclonal antibody that has been granted orphan drug designation in both the U.S. and EU for gastric cancer and is being developed by Henlius under a license from AbClon, Inc., following a discovery collaboration which grants Alligator the right to participate in potential future revenues. "The successful dosing of the first patients across all regions marks an important milestone, signaling the continued progress in the Phase 3 study with HLX22," said Søren Bregenholt, CEO of Alligator Bioscience . "The continued advancement also suggests sustained investigator interest in evaluating HLX22 as a potential treatment option for patients with gastric cancers." Under the terms of Alligator's agreement with AbClon, Alligator is entitled to 35% of AbClon's revenue from its sublicense to Henlius, including potential milestone payments and royalty revenues, which, if HLX22 is successfully developed and approved, could represent a meaningful long-term revenue opportunity for Alligator. For further information, please contact: Søren Bregenholt, CEO E-mail: soren.bregenholt@alligatorbioscience.com Phone: +46 (0) 46 540 82 00 The information was submitted for publication, through the agency of the contact person set out above, at 08:45 a.m. CEST on 8 June 2026. About Alligator Bioscience Alligator is a clinical-stage biotechnology company developing tumor-directed immuno-oncology antibody drugs focused on the CD40 receptor. This validated approach promotes priming of tumor-specific T cells and reversing the immunosuppressive nature of the tumor microenvironment, with significant potential benefits for cancer patients across multiple types of cancer. The Company's lead drug candidate mitazalimab is currently ready for Phase 3 development, and has previously presented unprecedented survival data at 30-months follow up in first-line metastatic pancreatic cancer patients in the Phase 2 trial OPTIMIZE-1. Alligator is listed on Nasdaq Stockholm (ATORX) and headquartered in Lund, Sweden. For more information, please visit alligatorbioscience.com . Attachments Alligator Bioscience comments on Henlius update on global phase 3 trial with HLX22 SOURCE: Alligator Bioscience View the original press release on ACCESS Newswire

Global clinical-stage biotech x FBDB™ platform and multi-indication development strategy for lead program HCB101 TAIPEI, SHANGHAI, SAN FRANCISCO, May 28, 2026 /PRNewswire/ -- HanchorBio, Inc. (TPEx: 7827), a global clinical-stage biotechnology company advancing next-generation immunotherapies for oncology and autoimmune diseases, today announced that it will be officially listed on the Taiwan Innovation Board on May 29, 2026, with an underwriting price of NT$120 per share. HanchorBio is focused on developing differentiated immunotherapies targeting large unmet needs in oncology and autoimmune diseases. The Company's core technology is its proprietary FBDB™ platform, which integrates multiple immune-modulating mechanisms into a single molecule and supports the development of multi-target, multifunctional biologic therapies. Scott Liu, Ph.D., Founder, Chairman, and Chief Executive Officer of HanchorBio, said platform technology is an important foundation for building long-term biotechnology value. By supporting the generation of multiple research and development assets over time, platform capabilities may help diversify risks associated with single-asset drug development while strengthening the long-term potential of the Company's pipeline. HanchorBio has built a pipeline of clinical and preclinical candidates, including HCB101, HCB301, HCB303, and HCB206. The Company's lead program, HCB101, is a CD47-targeting anti-cancer drug candidate designed through precision protein engineering to block tumor immune-evasion signals and restore macrophage-mediated tumor phagocytosis. HCB101 is currently being advanced in Phase 2a clinical development in combination with ramucirumab and paclitaxel for gastric cancer, while also being evaluated in additional indications, including head and neck cancer, colorectal cancer, and triple-negative breast cancer. HCB301, a trifunctional fusion protein designed to address three key tumor immune-escape mechanisms, has entered Phase 1 clinical trials in the United States, mainland China, and Taiwan. HCB303 is a next-generation multi-target immunotherapy candidate currently under clinical development planning, while HCB206, the Company's dual-mechanism autoimmune disease program, is viewed as an important potential driver of future pipeline value. Dr. Liu noted that, in biotechnology licensing and partnership discussions, early clinical data supported by proof-of-concept findings are often a key factor in attracting global pharmaceutical partners. Such data may provide initial evidence of safety, clinical activity, and potential differentiation in patients. HCB101 has shown encouraging early clinical activity in ongoing multinational Phase 1b/2a studies. In a mid-dose cohort evaluating HCB101 in combination with standard therapy for second-line gastric cancer, the regimen demonstrated an objective response rate (ORR) of 80%, with favorable safety and tumor reduction observations. Preliminary data from gastric cancer and first-line triple-negative breast cancer cohorts have also shown encouraging response and disease control signals. If subsequent Phase 2a proof-of-concept data across multiple indications remain supportive, the Company believes HCB101 may further positioned for global partnering discussions. HanchorBio is pursuing a multi-indication clinical development strategy for HCB101, designed to support flexible business development opportunities, including licensing, co-development, and potential strategic transactions. Following its licensing agreement last year with Henlius for the development and commercialization rights to HCB101 in mainland China and certain territories, valued at up to US$202 million, HanchorBio has continued to advance discussions with multiple global pharmaceutical companies. The Company is currently engaged in ongoing partnering discussions for global and regional rights to HCB101 outside previously licensed territories. About HanchorBio Based in Taipei, Shanghai, and the San Francisco Bay Area, HanchorBio (7827.TPEx) is a global clinical-stage biotechnology company focused on immuno-oncology and immune-mediated diseases. The company's proprietary Fc-based designer biologics (FBDB™) platform enables the design of multi-functional biologics intended to modulate innate and adaptive immune pathways with structural control over safety, exposure, and manufacturability. HanchorBio is advancing a portfolio of differentiated biologics designed to address significant unmet medical needs through innovative molecular engineering and scalable CMC strategies. For more information, please visit: . SOURCE HanchorBio Inc. 21% more press release views with Request a Demo

– E-688/HLX316 is the first tumor-targeted human sialidase to enter clinical trials, designed to restore both innate and adaptive anti-tumor immunity by removing immunosuppressive sialoglycans – – Trial is being conducted in China by strategic partner Shanghai Henlius Biotech – WALTHAM, Mass.--(BUSINESS WIRE)--Palleon Pharmaceuticals, the first company to translate glycan editing science into clinical-stage therapeutics for immune modulation, today announced the first patient has been dosed in a Phase 1 clinical trial of E-688/HLX316, a first-in-class B7-H3-targeted sialidase. The study is being conducted in China by strategic collaborator Shanghai Henlius Biotech in patients with tumors prone to B7-H3 overexpression and hypersialylation, with an initial focus on platinum-resistant ovarian cancer. This milestone marks the clinical translation of a fundamentally new mechanism — glycan editing for immune modulation — grounded in the pioneering glycobiology research of Nobel laureate Carolyn Bertozzi. Tumor hypersialylation, the upregulation of sialic acid-containing glycans on the surface of cancer cells, can suppress anti-tumor immunity by activating sialic acid-dependent immune regulatory pathways. This axis of immune evasion is present across many solid tumors and correlates with poor clinical outcomes in dozens of published studies. "E-688/HLX316 is designed to enzymatically remove sialic acid from tumor cell surfaces at the site of B7-H3 overexpression, unmasking tumors to the immune system in a durable, mechanistically distinct way. This first-in-human trial is a critical step toward validating glycan editing for immune modulation as a new therapeutic paradigm across hypersialylated solid tumors,” said Jim Broderick, M.D., Chief Executive Officer and Founder of Palleon. "The protocol includes a planned expansion into platinum-resistant ovarian cancer, where high B7-H3 expression and hypersialylation provide a compelling biological rationale for this approach." About E-688/HLX316 E-688/HLX316 is generated from Palleon's EAGLE (Enzyme-Antibody Glycan-Editing) platform and combines a human sialidase enzyme with a targeting arm directed at B7-H3, a tumor antigen broadly overexpressed across solid tumors and associated with aggressive disease biology and poor prognosis. By enzymatically removing sialic acid from tumor cell surfaces, E-688/HLX316 restores immune recognition through glycan-binding receptor pathways, disrupts the immunosuppressive tumor microenvironment, and is designed to generate durable anti-tumor immune responses — activating both innate and adaptive immunity through a mechanism distinct from existing checkpoint therapies. In preclinical studies, E-688/HLX316 demonstrated tumor surface desialylation lasting more than seven days in vivo and showed improved anti-tumor activity relative to anti-PD-1 monotherapy in humanized tumor models. Phase 1 Trial Design The Phase 1 first-in-human trial will evaluate safety, tolerability, pharmacokinetics and pharmacodynamics, and preliminary anti-tumor activity of E-688/HLX316 monotherapy, comprising a Phase 1a dose escalation in B7-H3+ advanced solid tumors and Phase 1b dose expansion in platinum-resistant ovarian cancer. Palleon and Henlius intend to expand the program into additional solid tumor indications characterized by high B7-H3 expression and hypersialylation. About Palleon Pharmaceuticals Palleon Pharmaceuticals is pioneering glycan editing for immune modulation, a new approach to the treatment of autoimmune disease and cancer. Co-founded on the glycobiology research of Carolyn Bertozzi (2022 Nobel Laureate in Chemistry), Palleon's pipeline includes E-602 (Phase 2, membranous nephropathy) and E-688/HLX316 (Phase 1, advanced solid tumors). Contacts Media Contact Lauren Crociati Ten Bridge Communications lcrociati@tenbridgecommunications.com