TNF and COVID-19: The terms ‘SARS-CoV2’ or ‘COVID-19’, ‘lung involvement’, ‘storm cytokine’, ‘macrophage activation syndrome, ‘disseminated intravascular coagulation’, ‘treatment’, ‘therapy’, ‘corticosteroids’, ‘chloroquine’, ‘hydroxychloroquine’, ‘tocilizumab’, ’anakinra’, ‘anti-TNF drugs’, ‘canakinumab’, ‘intravenous immunoglobulins’, ‘baricitinib’, ‘colchicine’, and ‘management’ were used to search the Medline, PubMed, and Cochrane Library databases for English-language papers published between January 2020 and October 2020, and also to review the papers’ references and textbook chapters.