Sam Neill is grateful for the current chapter of his life.

Four years after the Jurassic Park star was diagnosed with stage 3 blood cancer, he confirmed that he is now cancer-free thanks to a revolutionary immunotherapy treatment he tried after his chemotherapy was no longer effective. 

“I’ve been living with a particular type of lymphoma,” Sam told 7News Australia in an interview published April 26. “I was on chemotherapy and the pretty miserable business but it was keeping me alive.”

“Then the chemo stopped working,” he continued. “I was at a loss and it looked like I was on the way out, which wasn’t ideal, obviously.” 

The 78-year-old ultimately underwent CAR T-cell therapy—which can be an effective option to treat hard-to-treat blood cancers, according to the American Cancer Society—to train his immune cells to recognize and destroy cancer.

“I’ve just had a scan just now and there is no cancer in my body,” Sam revealed. “That’s an extraordinary thing. I’m very, very excited that this can happen.”