A new study of Pfizer’s oral JAK inhibitor Xeljanz (tofacitinib) suggests it could help cut the risk of death or respiratory failure in patients hospitalized with COVID-19 pneumonia who were not on ventilation but the company has not yet committed itself to pursuing a pivotal study.
That most likely reflects Pfizer giving itself time to weigh up the chances of success of a large-scale study, especially...





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