Response to: 'Patients with lupus are not protected from COVID-19: a comment' by Sawalha, 'No evidence so far on the protective effect of hydroxycloroquin to prevent COVID-19: response to the Comment by Joob and Wiwanitkit' by Romão

We thank the readers who share interesting ideas on our publication entitled ‘SLE, hydroxychloroquine and no SLE patients with COVID-19: a comment’.1 First, we really appreciate the reply by Monti and Montecucco.2 We agree that large registry data are required to clarify the incidence of COVID-19 in patients with systemic lupus erythematosus (SLE).1 Seeking for a new drug against the emerging COVID-19 is a challenge. In this pandemic situation, urgent search for drug and vaccine is necessary. Not only hydroxychloroquine but also other drugs such as antiretroviral drugs are widely used without complete clinical trials. We feel glad that our article can stimulate data sharing on the important issue of the inter-relationship between COVID-19, SLE …