The University of Toronto Lupus Cohort dataset and GSK BLISS-52 and BLISS-76 trial data The Toronto Lupus Cohort (TLC) is the largest lupus cohort in Canada, and more than 1600 patients have been enrolled in this cohort. Patients in the TLC are seen at regular intervals (2-6 months apart) and data, including laboratory and clinical parameters important to lupus, is collected using a well-defined protocol.