Here is a trial to watch. In MN, testing if HCQ works to *prevent* infection with covid rather than if it works to *treat* a covid infection.
Had second interim look, DSMB (data safety monitoring board) did not stop trial for safety (good), did not stop trial for futility (good), allowed trial to be downsized by 1/3 (could imply data trending in right direction enough that don’t need original powering, or could imply dropout rate lower than planned - ambiguous but could be good).