Du Du F F Liu Liu B B Zhang Zhang S S COVID-19: the role of excessive cytokine release and potential ACE2 down-regulation in promoting hypercoagulable state associated with severe illness COVID-19: the role of excessive cytokine release and potential ACE2 down-regulation in promoting hypercoagulable state associated with severe illness  J Thromb Thrombolysis  J Thromb Thrombolysis 2021 2021 51 51 2 2 313 313 329 329 supplied-pmid 32676883? The gene discussed is ACE2; the disease is COVID-19.