CellSight Technologies Inc.

CellSight Technologies Inc.

is a biotechnology and molecular imaging company located in San Francisco, California. Founded in 2009, the company specializes in developing PET imaging companion diagnostics that visualize immune activity, particularly to enhance immunotherapy and cell- and gene-therapy development. The core technology of CellSight focuses on PET tracers and molecular imaging tools, notably [18F]F-AraG (VisAcT), which targets activated T cells. This allows clinicians and researchers to monitor immune activation in patients, helping to assess their readiness for immunotherapy or the need for immune priming prior to treatment. The company offers custom imaging research services and prepackaged molecular imaging kits for pharmaceutical companies and academic institutions. CellSight's mission is to discover, develop, and commercialize PET imaging companion diagnostics to support therapy development and patient management. The company collaborates with large pharmaceutical firms, academic institutions, and research organizations, including notable names like UCSF, UC Davis, and Stanford University.