The hit sitcom is currently in its tenth season

Reports suggest that a spin-off from successful US sitcom The Big Bang Theory is in the works.

The comedy, which focuses on a group of geeky science-obsessed friends, has run for ten seasons since premiering in 2007. Its tenth season kicked off in September and, although no more seasons are currently commissioned, the cast are said to be negotiating a deal for an eleventh season.

The Hollywood Reporter reports that CBS is developing a prequel centring about the character of Sheldon Cooper, played by Jim Parsons, for the when original series comes to an end. The follow-up show has been described as a “single-camera comedy” and “Malcolm in the Middle but with a young and potentially teenage version of Sheldon”.

Parsons will reportedly executive produce the series, while no other current Big Bang Theory cast members are thought to be involved in the project.

Jim ParsonsGetty Images

Kaley Cuoco, who plays the role of Penny, recently said that the “overall consensus” among her Big Bang Theory castmates is to continue the hit comedy past its tenth season.

“I think it’s a given that we want to be here,” she told TV Line. “That’s the overall consensus. It might be a sticky road, but if I have anything to do with it, we’d be here for much longer. That’s the goal.”

CBS chief Glenn Geller has said of the sitcom’s future: “We’re very confident that everyone involved wants more of The Big Bang Theory past year 10. I know Warner Brothers will make those deals… We’ll put it on for as long as everyone wants it on the air. I hope it lasts forever.”

The Big Bang Theory’s executive producer Steve Molaro admitted to Entertainment Weekly that he didn’t know how the series would end or what its finale would involve: “I have personal thoughts floating around in my head, but we haven’t really talked about it. It always seems like this thing that’s far off in the distance. I’m not going to think about it all that much, because it makes me sad.”