Single-cell analysis of two severe COVID-19 patients reveals a monocyte-associated and tocilizumab-responding cytokine storm

Tocilizumab has been used to treat the excessive inflammatory responses in COVID-19 patients. Here, the authors use single-cell RNA sequencing results from two severe COIVD-19 patients to provide high-dimensional immune profiling data, and to implicate potential cellular and molecular insights for the therapeutic effects of tocilizumab.