Scientists at Israel’s Weizmann Institute have had promising results in the lab with experimental treatments for Ewing sarcoma – a bone cancer common in teenagers with a specific defective gene. Mifepristone – a glucocorticoid receptor blocker – stopped the cancer spreading to other organs.
https://www.weizmann-usa.org/news-media/news-releases/a-new-route-to-blocking-children-s-bone-cancer
https://www.cell.com/cell-reports/fulltext/S2211-1247(19)31150-7