Circio Holding ASA, a biotechnology company, develops novel circular RNA and immunotherapy medicines. The company is developing TG01, a cancer vaccine targeting driver mutations, which is in three clinical trials for multiple myeloma, and pancreatic and lung cancer; and circVec circRNA vector platform, a modular genetic cassette for biogenesis of multifunctional circRNAs in human cells. It has a collaboration with Certest Biotec, S.L. for formulation of circVec. The company was formerly known as Targovax ASA and changed its name to Circio Holding ASA in May 2023. The company was incorporated in 2010 and is based in Oslo, Norway.