CHEST April 2026, Volume 169, Issue 4 CHEST® journal's Editor in Chief Peter Mazzone, MD, MPH, FCCP, highlights key research published in the journal CHEST April 2026 issue, including an exploration of inspiratory effort and dynamic transpulmonary driving pressure in extremely preterm infants undergoing noninvasive ventilation, an investigation of comparative outcomes and side effects of immunosuppressants and tumor necrosis factor inhibitors in sarcoidosis, and more.   Moderator:    Peter Mazzone, MD, MPH, FCCP