It's interesting, I've been part of some research studies, I've been through a number of surgeries, and I've literally tried every medical treatment that's available (and a couple that may be someday...) with some very good IBD research docs. And I've also seen that diet and lifestyle choices can definitely affect the severity of a flare, especially the feelings and symptoms.
But they cannot 'cure' Crohn's or put it in remission. I currently have inflammation in my mouth, and unfortunately you can't just slice it out to take care of the problem like you can parts of the gut ;)
Anyways, all that to say these studies come and go, a few have a sliver of promise or offer some new route for a researcher to go, but in my few decades of Crohn's experience, I've grown to accept that short of a very significant stroke of luck, there probably won't be a cure in my lifetime.
And if there is, it'll probably crack the nut on a ton of other autoimmune diseases too. Hopefully!