Doherty has been married to photographer Kurt Iswarienko since 2011.
The movies centers around a woman, played by Kelly Hu, who receives a breast cancer diagnosis then tries to find the daughter she gave up for adoption years ago.
Doherty says the movie is “the first acting thing I’ve done about cancer” and says she plans on living a long time.
“I’m very much like there’s no bucket list because I’m going to be the longest-living person with cancer,” she said. “If I had to say one, it would just be living. That’s the only thing on my list at this point.”
Doherty was first diagnosed with breast cancer in 2015 and entered remission two years later. In 2020, Doherty revealed her cancer had returned.