Circularis Biotechnologies, Inc. develops a method to regulate gene expression and enable increased biotherapeutic production yields. The company develops RACRE Variant Libraries, hCMV Variant Library, Protein expression with CMV promoters, and T7 Variant Library. It provide services, including RACRE Enhancement, RACRE Discovery, RACRE Technology Access Program, and Ribozyme Analysis of Cis-Regulatory Elements. The company was founded in 2014 and is based in San Leandro, California.