Despite an early stumble, the U.S. FDA granted emergency use authorization (EUA) to the C5a inhibitor Gohibic (vilobelimab) from Inflarx NV for treating COVID-19 in hospitalized adults. A year ago, an initial phase III analysis had failed to show a statistically significant effect on the primary endpoint of 28-day all-cause mortality though there was a relative reduction in mortality in the active arm vs. placebo.