An analysis of data from 28 countries on suspected or confirmed COVID-19 infection demonstrated that MS patients treated ocrelizumab or rituximab contributed to a notably higher risk of hospitalization and admission to the ICU and artificial ventilation than patients on other DMTs (including alemtuzumab, cladribine, dimethyl fumarate, fingolimod, glatiramer acetate, IFN-β, natalizumab, and teriflunomide) [34]. The gene discussed is IFNB1; the disease is myeloid sarcoma.