Rituximab-Induced Acute Lympholysis and Pancytopenia After COVID-19 Vaccination (preprint)

Current guidelines do not adequately acknowledge the potential acute consequences in patients receiving both rituximab and COVID-19 vaccination. We report a case of rituximab-induced lympholysis and pancytopenia in a patient who received Moderna COVID-19 vaccine ten days before rituximab infusion. These observations highlight the urgent need to update current guideline.