Bicycle Therapeutics plc is a United Kingdom-based clinical-stage biopharmaceutical company developing a novel class of medicines, referred to as Bicycle molecules, for diseases that are underserved by existing therapeutics. Bicycle molecules are fully synthetic short peptides constrained with small molecule scaffolds to form two loops that stabilize their structural geometry. The Company is evaluating BT8009, a Bicycle Toxin Conjugate (BTC) targeting Nectin-4, a well-validated tumor antigen; BT5528, a BTC targeting EphA2, a historically undruggable target, and BT7480, a Bicycle Tumor-Targeted Immune Cell Agonist (Bicycle TICA) targeting Nectin-4 and agonizing CD137, in Company-sponsored clinical trials. Additionally, the Company is developing Bicycle Radio Conjugates (BRC) for radiopharmaceutical use and, through various partnerships, is exploring the use of Bicycle technology to develop therapies for diseases beyond oncology. Its product candidates also include BT1718 and BT7455.