
Samsung Bioepis Announces Positive Preliminary Phase 1 Data for SB27, Proposed Biosimilar to Keytruda (Pembrolizumab)6.5.2026 01:00:00 CEST | Press release
Phase 1 study has demonstrated pharmacokinetics (PK) equivalence between SB27 and KeytrudaPhase 1 and Phase 3 studies expected to be completed within 2026 Samsung Bioepis Co., Ltd. announced today that the Phase 1 study on SB27, a proposed biosimilar to Keytruda1 (pembrolizumab), has met its primary pharmacokinetics (PK) endpoints. The randomized, double-blind, three-arm, parallel group, multicenter clinical trial demonstrated pharmacokinetic bioequivalence of SB27 (pembrolizumab) to the reference product Keytruda. Initiated in January 2024, Phase 1 study is being conducted in four countries, and is expected to be completed by November 2026.2 The study assessed pharmacokinetics, efficacy, safety, and immunogenicity of SB27, EU-sourced Keytruda, and US-sourced Keytruda in patients with stage II or IIIA non-small cell lung cancer (NSCLC) following complete resection and adjuvant platinum-based chemotherapy. 163 participants were randomized to receive SB27, EU-sourced Keytruda, or US-sour



















