An Ohio woman diagnosed with Hodgkin’s lymphoma in 2009 is cancer-free after taking part in a groundbreaking clinical trial.

Denise Keenan, 66, of Youngstown, said she began getting used to the idea of "not being here anymore."

"She's convinced me probably a hundred times over the years that she was a goner," her husband Jim Keenan told WJW-TV.

Pet scans showed how Denise Keenan's cancer spread throughout her lungs and chest.

She had been in and out of remission several times over the last decade.

Keenan participated in a trial known as "CAR T-cell Therapy." She took part in the trial at Seidman Cancer Center at University Hospitals of Cleveland.

Doctors now say the mother and wife is cancer free.

“The jury’s still out as far as how long this is going last because they just don’t have a lot of long-term data," she said.

The hospital system is the nation's first to lead this type of trial.

"We collect the patient's cells they get modified with a particular virus that introduces the genetic modification over 12 to 14 days," hematology and oncology specialist, Doctor Paolo Caimi said.

Because the trial is in the early stages, doctors said they do not know why some patients respond better to CAR T-cells.

As for Keenan, she said she is going to live in the moment.

"The future is unknown, so just enjoy the moment," she said. "You're a lot happier if you can do that."