Harbour BioMed Announces Dosing Of First Patient In Australia For Phase Ib/IIa Clinical Study Of Its Next-Generation Anti-CTLA-4 Antibody

CAMBRIDGE, Mass. and ROTTERDAM, Netherlands and SUZHOU, China, May 11, 2021 /PRNewswire/ -- Harbour BioMed ("HBM", HKEX: 02142) today announced the dosing of the first patient in its part 2 of phase I (phase Ib/IIa) clinical study of its next-generation anti-CTLA-4 antibody, where Australian patients with metastatic or advanced melanoma, hepatocellular carcinoma (HCC) and renal cell carcinoma (RCC) and other type of tumors will be enrolled (study no. 4003.1). The objective of this study is to evaluate the safety, tolerability, PK/PD, and anti-tumor activity of HBM4003 as a single agent in multiple solid tumor types. The part 1 of phase I trial study results have been submitted to European Society of Medical Oncology (ESMO).As Harbour BioMed's next-generation anti-CTLA-4 antibody, HBM4003 is currently in an open label, multicenter global trial for patients with advanced solid tumors. The part 1 study was focused on dose escalation, and phase Ib/IIa study is to proceed to dose expansion to further explore the anti-tumor activities of HBM4003 in multiple solid tumor types. "In our previous study, we observed a case of good tumor shrinkage in a man with metastatic liver cancer," said Professor Paul de Souza from St George Private Hospital (Australia). "I look forward to this new stage of the study, which will allow us to recruit more patients with particular cancers that may benefit from this treatment." "HBM4003 has shown strong anti-tumor activity and great safety in its phase 1 clinical studies," Dr. Jingsong Wang, Founder, Chairman and CEO of Harbour BioMed said. "We will continue to accelerate the global development of HBM4003 for multiple tumor types, so that we can help cancer patients around the world to live better and longer lives."

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