Have There Been TMNT Novels?

[Gyt Kaliba]

I got to thinking about this the other day, and my research into it (AKA Google) didn't yield anything, so I figured I'd just ask here.

I know that there have been kid's books for TMNT over the years, but have there ever been any full-length novels for the franchise? Not novelizations, like the original live-action film at least got (I know that exists only because I have a copy), but a novel that's either an original story or an adaptation of a comic storyline, or something? Other comics have had them over the years, I've read/seen a few different Marvel comic ones. And there's even one or two for Hellboy.

So has TMNT ever had anything like that? And if not, why do you think that is, per say? And as a final question(s), would you like to see something like that? If so, any particular authors you'd like to see tackle it, or subjects perhaps, that you think would be better tackled in written word rather than comics?