On March 21, 2021 Harbour BioMed (HBM) (HKEX: 02142) reported the dosing of the first patient in its open Phase I clinical study of HBM4003 for Chinese patients suffering from advanced melanoma and other solid tumors (study No. 4003.2) (Press release, Harbor BioSciences, MAR 21, 2021, View Source [SID1234576929]). This study will evaluate the safety, tolerability, PK/PD, and anti-tumor activity of HBM4003 in combination with teriprizumab (PD-1 antibody) in the treatment of solid tumors. Prior to this, the China National Medical Products Administration (NMPA) has approved this combined study of HBM4003 and PD-1 antibody/chemotherapy for patients with NSCLC and other solid tumors.
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Professor Jun Guo, Deputy Dean of Beijing Cancer Hospital, Deputy Director of Beijing Institute for Cancer Research and Director of Melanoma Department, said: "Due to the special subtype of melanoma in China, treatment for this disease is especially challenging, resulting from poor prognosis, low survival rate, and the limited efficacy of current PD-1 monotherapy of around 16 percent. Innovative solutions that can improve the treatment efficacy and patients’ overall survival is urgently needed. As this study by Harbour BioMed unfolds, we look forward to providing more effective and safer treatment options to Chinese patients with melanoma and other solid tumors in a near future."
"HBM4003 is a new generation of anti-CTLA-4 antibody. Based on its unique mechanism, it has shown great safety and strong anti-tumor activity in pre-clinical studies." Dr. Wang Jingsong, Founder, Chairman and CEO of Harbour BioMed said. "Each year, there are about 4 million newly diagnosed cancer patients in China and there is an urgent need for innovative drugs and therapeutic solutions for cancer treatment. We will continue to accelerate the global development of HBM4003 for multiple cancers, so that we can help cancer patients around the world to live better and longer lives."
About HBM4003
HBM4003 is the fully human anti-CTLA-4 monoclonal heavy chain only antibody (HCAb) generated from Harbour Mice. HBM4003 shows enhanced antibody-dependent cell cytotoxicity (ADCC) killing activity and is extremely specific to high CTLA-4 Treg cells in tumor tissues. The potent anti-tumor efficacy and differentiated pharmacokinetics with durable pharmacodynamic effect presents a favorable product profile. This novel and differentiated mechanism of action has the potential to improve efficacy while significantly reducing the toxicity of the drug.