pharmaceuticals Review Janus Kinase Inhibitors and Coronavirus Disease (COVID)-19: Rationale, Clinical Evidence and Safety Issues Milo Gatti 1,2,† , Eleonora Turrini 3,† , Emanuel Raschi 1,* , Piero Sestili 4 and Carmela Fimognari 3,* 1 Pharmacology Unit, Department of Medical and Surgical Sciences, Alma Mater Studiorum—Università di Bologna, Via Irnerio 48, 40126 Bologna, Italy;
[email protected] 2 SSD Clinical Pharmacology, IRCCS Azienda Ospedaliero Universitaria Sant’Orsola, 40126 Bologna, Italy 3 Department for Life Quality Studies, Alma Mater Studiorum—Università di Bologna, C.so D’Augusto 237, 47921 Rimini, Italy;
[email protected] 4 Department of Biomolecular Sciences (DISB), Università degli Studi di Urbino Carlo Bo, Via I Maggetti 26, 61029 Urbino, Italy;
[email protected] * Correspondence:
[email protected] (E.R.); carmela.fi
[email protected] (C.F.) † These Authors contributed equally to this article. Abstract: We are witnessing a paradigm shift in drug development and clinical practice to fight the novel coronavirus disease (COVID-19), and a number of clinical trials have been or are being testing various pharmacological approaches to counteract viral load and its complications such as cytokine storm. However, data on the effectiveness of antiviral and immune therapies are still inconclusive and inconsistent. As compared to other candidate drugs to treat COVID-19, Janus Kinase (JAK) inhibitors, including baricitinib and ruxolitinib, possess key pharmacological features for a potentially successful Citation: