Tom Parker will miss the start of The Wanted tour, as he finishes a revolutionary cancer treatment in Spain.
The singer, 33, is currently staying in a private hospital, ahead of the boyband's UK tour kicking off in Glasgow tonight.
Tom had been hoping to be fit and raring to go for the gigs, as he continues to battle his brain cancer, but has sadly been hit with some logistical issues.
Taking to Instagram on Wednesday, the dad-of-two shared a snap of himself and his bandmates and updated his fans with the sad news.
"So, as most of you know, I’ve been out in Spain on a treatment programme for the past couple of weeks," he began in the caption.
"It was only meant to last 20 days but due to a couple of logistical changes with tests and results it won’t be complete until the end of the week now which has delayed our journey home."
He continued: "I’m obviously gutted that I’ll be missing the first few shows but as I’m sure you will understand, I have to complete my treatment cycle.
"I’ve been zooming into rehearsals all week and I know that the show will be incredible and that my boys will hold the fort until I’m back."
The Glad You Came singer hopefully signed off: "Can’t wait to see you all very soon, hope you all enjoy the show. Much love. Tom x."
The star's bandmates Max George, Siva Kaneswaran, Jay McGuiness, and Nathan Sykes were amongst the supportive comments underneath the post on Wednesday.
Tom - who has a daughter Aurelia, two, and son Bodhi, 11 months - was initially told he had a grade four glioblastoma and was given a life expectancy of 12 to 18 months.
Thankfully, after six rounds of chemotherapy and 30 radiotherapy sessions, the star's condition has improved and he and his family have a positive outlook about things.
The singer has been hopeful that a revolutionary £4,000 a week treatment in Spain can swings things in his favour further.
The star - who has previously spoken out about the lack of funding for cancer patients in the UK - has been spending time in a private facility in Spain over recent weeks.
Opening up about his illness last October, Tom expressed a goal to be cancer free by March.
"You’ll always be classed as terminal," the star said during his TV documentary Inside My Head.
"They give you 12 to 18 months of survival. But that’s the general statistics. Everyone we’ve spoken to has been way, way beyond that.
"Now, we’re aiming to be cancer free by March. That’s the aim. This disease is always there.
"You might have residual cells but just not active. So, we’ll just carry on, just crack on and see where we get to."
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