Acalabrutinib Study With Best Supportive Care in Participants Hospitalized With COVID-19

This study is to support the ongoing clinical development of acalabrutinib (CALQUENCE®) in hospitalized COVID-19 patients. Because many COVID-19 patients may be unable to swallow capsules due to respiratory failure (eg, they may require endotracheal intubation for ventilator support and Naso Gastric tube placement), it is important to have a clinically acceptable method to administer acalabrutinib (capsules) via NG tube. Furthermore, many hospitalized patients are placed on high doses of proton pump inhibitors (PPIs) (also commonly known as antacid medication). This study is designed to determine the Pharmaco Kinetics (effect of body/ bodily systems on the drug), safety and tolerability of acalabrutinib suspension, when coadministered with a PPI, in participants with confirmed SARS-CoV-2 infection requiring hospitalization due to respiratory failure, attributable to COVID-19 pneumonia and who have an Nasogastric (NG) tube in place.