The only safe place to search for such ones is
$1I myself was invited for Phase 2 & 3 trial for other illness. It's not easy to be classified, you have to meet rigorous requirements and study can end for any reason. You can end up in placebo group too if it's Phase 2. Idk how it's now due COVID many studies are stopped or canceled because of it :( mine too it's for health reasons, safety and to be sure that results will be not biased.