We think this is why, to date, these kinds of drugs have failed in clinical trials -- not because the science wasn't sound, but because the people in these trials were already symptomatic.
Pensamos que esta é a razón de que, ata agora, fallasen este tipo de fármacos en ensaios clínicos... non por non contar cunha ciencia sólida senón porque as persoas destes ensaios xa manifestaban síntomas.