That was a surreal moment," he said.After Mr Whitehead was unable to continue with treatment at the Peter MacCallum Cancer Centre because new cancer cells developed, his doctor suggested another clinical trial through Monash University.He started the second trial in January, not knowing if the treatment would be effective."It was such an unknown because the cancer that I've got … there's not really someone else with it," he said."That's the hard thing with it It targets the protein that the cancer grows on by linking itself to it, making it unavailable for the cancer to use, starving it."Mr Whitehead said his cancer treatment had not only been an emotional journey, but was financially difficult."I basically lived in Melbourne for six months."His journey with cancer has had many twists and turns after he noticed his health had changed significantly in October 2025."In a matter of weeks, I went from someone that could run 130 kilometres a week down to someone that struggled to mow a lawn," he previously told the ABC.Following an ambulance trip to the hospital at Mount Gambier, preliminary testing discovered he had cancer and was given three months to live.Mr Whitehead has thanked the doctors and wider medical teams for helping him through this journey."There has been some pretty crazy things there when it comes to the health system, bad and good, but we got a result, and there's no point dwelling on the past," he said."It is amazing it has come to this