Beam Me Up, Scotty!: Augustus never claims to feel kinship with Anne Frank because she died "of an illness" like his own. He and Hazel both clearly feel kinship with her because she died young, but the alleged murder-denying quote never occurs.
Breakaway Pop Hit: "Boom Clap" by Charli XCX. While the movie was hugely successful, the song is fast distancing itself from its origins as of this writing.
Breakthrough Hit: John Green has had many popular books before this, but this was his first massive hit and the book that really brought him into public eye. In 2014 alone, only the Divergent trilogy has been able to rival it in sales.
Shrug of God: John Green has had to do a lot of this to fans who want to know what happened to the characters before/after the contents of the book; this becomes somewhat humorous in light of the fact that there’s also a significant in-universe example where Hazel and Augustus ask Van Houten what happened to the characters of An Imperial Affliction and he tells them he doesn’t know.
The original ending had Hazel and Van Houten try to find a way to honor Gus's death by dying themselves in a way that would accomplish something and was meaningful to his life. They plan to go out and kill a drug lord and die at the hands of his bodyguards, but apparently decide against the idea before the story's conclusion. One editor, upon reading this ending, remarked, "I can't tell if the last 40 pages are a joke." The again, neither can John Green himself.
Originally, the story was going to be from Isaac's point of view.