Dublin woman Elaine Kelly (39) says she is alive today because she agreed to take part in a clinical trial after she was diagnosed with phase two breast cancer.
Psychologist Elaine has revealed that new drug Kadcyla, which costs up to €123,000 per patient for a year's treatment, has "changed her life".
"I was first diagnosed with inflammatory breast cancer in April 2011," she said.
"I underwent a number of different treatments including chemotherapy, all which showed positive results."
However, almost a year to the day after she was given the life-changing news, she was told her cancer was beginning to spread.
In February last year the Ballycullen native was told she qualified to take part in a trial of the new treatment, and she started using the drug a month later.
"I want to relay any fears that anyone may have in relation to participating in a trial. You get the absolute highest standard of care," she said.
"It has changed my life. Now instead of being a cancer sufferer I'm living with cancer.
"Because of people like me taking part in the trial, this drug is now available to everyone."