On the heels of the first trailer for "T2: Trainspotting," author Irvine Welsh suggests the big-screen sequel may not be the last we see of the characters.

“Basically, I’ve plans for them all," he told NME. "All in various kind of schedules or adaptations.” It's all ruling on cable TV, cable TV has some interesting developments. We're working on all these different kind of things."

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"I think now anybody who's in the book, whether they like it or not, they're working on the way of being in the film," he continued. "You keep that in mind. As soon as you've written it, you're thinking about how it can move into different mediums."

Adapted by Danny Boyle from Welsh's novel of the same name, 1996's "Trainspotting" follows a group of heroin addicts in late-1980s Edinburgh. "T2: Trainspotting," loosely based on Welsh's 2002 novel "Porno," picks up roughly 20 years later,

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The sequel features many of the cast members from the original film, including Ewan McGregor as Mark "Rent Boy" Renton, Ewen Bremmer as Daniel "Spud" Murphy, Jonny Lee  Miller as Simon "Sick Boy" Williamson and Robert Carlyle as Francis "Franco" Begbie.

"T2: Trainspotting" opens Jan. 27, 2017, in the United Kingdom and on Feb. 3 in the United States and Canada.