LAUSR

e15014 Background: Prestige Biopharma Pte Ltd is developing HD204, a biosimilar of the EU-approved and US-licensed Bevacizumab (Avastin) that is approved treatment for a variety of tumour types. Bevacizumab is a recombinant humanized monoclonal antibody (IgG1) that binds to soluble vascular endothelial growth factor (VEGF), thus prevent interaction with VEGF receptors. Due to heterogeneity nature of antibody drug, extensive characterization of antibody from physicochemical and biological properties using multiple bioanalytical assays is required. The development of HD204 from analytical biocomparability to clinical trial I are demonstrated. Methods: Analytical biocomparability in physiocochemical and biological properties of HD204 was compared to Avastin sourced from EU and US using multiple bioanalytical assays as below. Clinical phase I (SAMSON), a randomized, double-blind, single dose and 3-way parallel group was initiated recently to compare pharmacokinetic and to evaluate the safety, tolerability and immunogenicity of HD204, EU-Avastin and US-Avastin. Approximately 120 healthy human subjects (assigned to 3 treatment group) was administered with a single intravenous infusion of 1 mg/kg of either HD204, EU- and US-Avastin. Results: HD204 shows equivalent in physicochemical and biological properties compared to EU- and US-Herceptin. For phase I study, patient recruitment was completed with treatment for come patients initiated but still ongoing. Conclusions: HD204 was shown to be equivalent in all parameters in the analytical biocomparability testing. Clinical Phase 1 trial (SAMSON) is ongoing on and key data from SAMSON trial will be reported in ASCO meeting. [Table: see text]