> Does that mean clincal trials didn't show a benefit for patients who had already developed symptoms? Does it mean it wasn't studied in patients who had alread

> Does that mean clincal trials didn't show a benefit for patients who had already developed symptoms? Does it mean it wasn't studied in patients who had already developed symptoms? It likely wasn't studied. It's a pretty new treatment, so the vendors start with clinical trials for use cases where the clearest/greatest impact is expected, and maybe later on move to related use cases.