“…In COVID-19, evidence suggests that patients with some types of immunosuppression (e.g., associated with ongoing receipt of cytotoxic chemotherapy or receipt of multiple immunosuppressive medications) remain at higher risk of severe disease when compared to patients with other risk profiles. 26 , 27 It is possible that patients with different types of immunosuppression may exhibit differential treatment responses to immunomodulators that were not able to measure in this study. Patients with different types of immunosuppression also have variable antibody response to mRNA vaccination against COVID-19.…”