Patent No. EP3730126 (titled "Liquid Composition Comprising Vegf Antagonist") was filed by Samsung Bioepis on Dec 18, 2018. The application was issued on May 14, 2025.
A stabilized liquid composition for protein drugs, particularly VEGF antagonists like aflibercept, comprising 5-100 mg/mL protein, 1-50 mM sodium phosphate buffer at pH 4-8, and 7.8-10% w/v stabilizer (trehalose or sucrose), without sodium chloride. The composition maintains protein stability and efficacy during extended storage through inhibition of polymerization, aggregation, and degradation.

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