"In a clinical trial, participants receive specific interventions according to the research plan or protocol created by the investigators." Participants are assigned an intervention by the investigators. This is different from an observational study in which participants' health outcomes are assessed based on already-established interventions. (from "Learn about Clinical Studies," clinicaltrials.gov)
Search for "clinical trial" and a disorder name.
Search for a disorder and either curative or palliative therapies.
"Alzheimer's Disease" AND "clinical trial" AND (palliative OR curative)
On the advanced search page, type in your search terms. Select "Clinical Trial" under the "Publication Type" menu.
Enter your search terms and click "Search." Once you see the results, click the text titled "Clinical Trial" under the "Article Types" option on the left side of the page.