Are you concerned at all about consuming GMO? 
Obviously it depends. If you tell me that I'm about to eat an apple infused with the DNA of an anaconda, than yes, I would be concerned.
But in general no, not really.
I had to study this alot in university. I'm not scared.
I"m more scared of the stupid propaganda that comes along with GMO's. Some of it is just straight from the horse's ass.