PT - JOURNAL ARTICLE AU - Stebbing, Justin AU - Sánchez Nievas, Ginés AU - Falcone, Marco AU - Youhanna, Sonia AU - Richardson, Peter AU - Ottaviani, Silvia AU - Shen, Joanne X. AU - Sommerauer, Christian AU - Tiseo, Giusy AU - Ghiadoni, Lorenzo AU - Virdis, Agostino AU - Monzani, Fabio AU - Rizos, Luis Romero AU - Forfori, Francesco AU - Avendaño Céspedes, Almudena AU - De Marco, Salvatore AU - Carrozzi, Laura AU - Lena, Fabio AU - Sánchez-Jurado, Pedro Manuel AU - Lacerenza, Leonardo Gianluca AU - Cesira, Nencioni AU - Caldevilla Bernardo, David AU - Perrella, Antonio AU - Niccoli, Laura AU - Méndez, Lourdes Sáez AU - Matarrese, Daniela AU - Goletti, Delia AU - Tan, Yee-Joo AU - Monteil, Vanessa AU - Dranitsaris, George AU - Cantini, Fabrizio AU - Farcomeni, Alessio AU - Dutta, Shuchismita AU - Burley, Stephen K. AU - Zhang, Haibo AU - Pistello, Mauro AU - Li, William AU - Romero, Marta Mas AU - Andrés Pretel, Fernando AU - Simón-Talero, Rafaela Sánchez AU - García-Molina, Rafael AU - Kutter, Claudia AU - Felce, James H. AU - Nizami, Zehra F. AU - Miklosi, Andras G. AU - Penninger, Josef M. AU - Menichetti, Francesco AU - Mirazimi, Ali AU - Abizanda, Pedro AU - Lauschke, Volker M. TI - JAK inhibition reduces SARS-CoV-2 liver infectivity and modulates inflammatory responses to reduce morbidity and mortality AID - 10.1126/sciadv.abe4724 DP - 2021 Jan 01 TA - Science Advances PG - eabe4724 VI - 7 IP - 1 4099 - http://advances.sciencemag.org/content/7/1/eabe4724.short 4100 - http://advances.sciencemag.org/content/7/1/eabe4724.full SO - Sci Adv2021 Jan 01; 7 AB - Using AI, we identified baricitinib as having antiviral and anticytokine efficacy. We now show a 71% (95% CI 0.15 to 0.58) mortality benefit in 83 patients with moderate-severe SARS-CoV-2 pneumonia with few drug-induced adverse events, including a large elderly cohort (median age, 81 years). An additional 48 cases with mild-moderate pneumonia recovered uneventfully. Using organotypic 3D cultures of primary human liver cells, we demonstrate that interferon-α2 increases ACE2 expression and SARS-CoV-2 infectivity in parenchymal cells by greater than fivefold. RNA-seq reveals gene response signatures associated with platelet activation, fully inhibited by baricitinib. Using viral load quantifications and superresolution microscopy, we found that baricitinib exerts activity rapidly through the inhibition of host proteins (numb-associated kinases), uniquely among antivirals. This reveals mechanistic actions of a Janus kinase-1/2 inhibitor targeting viral entry, replication, and the cytokine storm and is associated with beneficial outcomes including in severely ill elderly patients, data that incentivize further randomized controlled trials.