Radical therapy seems to slow Huntington’s disease progression by 75%.

https://www.bbc.com/news/articles/cevz13xkxpro

Extremely hard neurosurgery and super expensive meds — but both will get easier and less expensive. And better treatments will emerge.

“one was medically retired and has returned to work. Others in the trial are still walking despite being expected to need a wheelchair.”

Very small numbers but dramatic results.