One of the ways the virus kills the patient is causing a cytokine storm [0][1]. And tocilizumab suppresses one of the cytokines in humans [2]. 0: https://www.

One of the ways the virus kills the patient is causing a cytokine storm [0][1]. And tocilizumab suppresses one of the cytokines in humans [2]. 0: https://www.nationalgeographic.com/science/2020/02/here-is-what-coronavirus-does-to-the-body/ https://www.nationalgeographic.com/science/2020/02/here-is-w... 1: https://en.wikipedia.org/wiki/Cytokine_release_syndrome https://en.wikipedia.org/wiki/Cytokine_release_syndrome 2: https://en.wikipedia.org/wiki/Tocilizumab https://en.wikipedia.org/wiki/Tocilizumab