EVERYTHING has been done to this point, either in books, games, comics...
I'm sure PROMETHEUS will ring some bells to someone who has read about the same concepts or action or i dont know what else. A real original story or concept or whatever is pretty hard to find these days...
In my eyes it's the execution that makes or brakes it.
Mutation might be only one of the aspect of the movie.
Not the main thing.
There's so many ampules, so many possibilities.
BTW the character is near the hangar entry of the Magellan/prometheus, just where we have seen a character using a flamethrower against something... Wont be suprised that the "thing" you can see falling from the ceilling toward the flamethrower guy is our mutated friend...