Here the research for Tocilizumab: "In conclusion, both intravenous and subcutaneous tocilizumab administration might be capable of reducing the risk of invasive mechanical ventilation or death in patients with severe COVID-19 pneumonia. Although these results are encouraging, they should be confirmed in ongoing randomised studies." https://www.thelancet.com/journals/lanrhe/article/PIIS2665-9913(20)30173-9/fulltext