A trailblazing grandfather is determined to help find a cure for the cruel condition that took his wife from him and is now wreaking havoc upon his twins.
Life changed forever for Jonathan Williamson, 70, in 1993 when his wife Sue was given six months to live after complaining of backache which was actually caused by a rare tumour of the adrenal glands above her kidneys - known as phaeochromocytoma.
Though the tumours spread fast throughout her body, a decade-long reprieve came in the form of liquid radiation therapy.
The treatment involved injecting the liquid into target areas to destroy the cancerous cells - but it also weakened her body.
Her general health worsened until she finally passed away in 2003, aged 57.
But Jonathan was forced to battle the condition once more when he discovered Sue's illness was caused by a defective gene all four of his children tested positive for.
Two were clear but twins, charity worker Jennie and firefighter James, 41, had both inherited the gene and the tumours had already spread across their bodies.
Charity worker Jonathan, of Dundee, Scotland, who set up the Phaeo and Para Cancer Charity in 2018 in a bid to find a cure, said: "In 1993, my life changed forever. Jennie and James didn’t know that their lives had changed forever, too.
"But our entire family felt the ripple effect. This gene, this cancer, it’s so devastated the family.
"To find a way forward would be incredible, and I’m sure we will.
"We continue to push on to find answers - for those we’ve lost, those who currently fight and the future generations to come."
After meeting in 1971 while working for Guinness brewery in London, Jonathan and Sue had a wonderful marriage and loved being parents to their twins and older children Katie Kay, 45, a primary school teacher, and Jonathan, 43, another firefighter.
The following year, in 1972, Sue had surgery to remove a tumour in her adrenal gland, but went on to have a "completely normal" life and had no idea her genetic condition was causing cancerous and non-cancerous tumours to grow in her body as she showed no symptoms.
But, after suffering from backaches in 1993, Sue saw a specialist and a biopsy revealed she had phaeochromocytoma, while tumours were found to have metastasized all over her body.
An unpredictable condition, it often occurs in sudden attacks and, if left untreated, can cause severe problems like irregular heartbeats, heart attacks, strokes and organ failure, according to the NHS, although only one in 10 tumours are malignant.
Jonathan, who has been with his current partner, Liz Duss, 72, for 12 years and has launched a GoFundMe appeal to raise money for research, said: "Sue was in really good health before this happened.
"When she was diagnosed, she was about 47, she had four young children, she was a busy mum and we were living a normal life.
"It was devastating to begin with, as she was only given six months to live."
A lifeline came when specialists at the Beatson West of Scotland Cancer Centre in Glasgow said Sue was eligible for radioisotope therapy - an injection of radioactive liquid, which she would need to have twice a year and would extend her life, by destroying cancer cells.
But the treatment itself was also terrifying.
Jonathan said: "She was put in an isolation room and no one could go in or out as it was so radioactive.
"We were scared but this was helping her to live.
"It was the only thing that could potentially keep her alive, so we just accepted it."
Incredibly, the treatment was highly effective and the family were able to live a "relatively normal life."
Jonathan added: "We were feeling pretty amazing. Going from six months to live to a treatment that would keep her alive was incredible.
"She was able to live a normal life. We travelled, we raised our kids. We did a lot of what we wanted to do when we retired.
"Life became very normal for us. We didn’t discuss her illness very often.
"We just got on with life. It was busy."
But the toxic treatment finally caught up with her, weakening her system until, on December 23, 2003, she passed away, aged 57.
Grateful for the decade the treatment bought, Jonathan said: "We could both see that her health was deteriorating. She needed a wheelchair, as she could no longer walk for any distance.
"The toxicity of the treatment took its toll. If she hadn’t been as strong a person as she was, she wouldn’t have lasted as long.
"But we lived a good 10 years more together than we thought we had."
In 2010, new research led to Jonathan being told Sue's cancer was caused by a faulty SDHD gene, which meant there was a 50 per cent chance it could be inherited.
All tested immediately, his two older children were clear, but both twins had the faulty gene.
Treatments were, by then, less toxic, but in 2011 both twins were found to have inoperable tumours wrapped around their necks.
Jennie's tumour, which was the size of a golf ball, was found near her jugular vein, which could not be removed as it was surrounded by nerves.
While James' tumour, which was the size of a sausage, is wrapped around his carotid artery and is too dangerous to remove.
James also had five non-malignant tumours in his stomach, which were, luckily, removed.
Jennie, who lives in Edinburgh, Scotland, with her two children Anatswa, eight, Kupa, seven, and husband, Ainslie Chinembiri, 39, a banker, said: "Because of our experience of seeing our mum living mostly a normal life, I felt a bit of relief, as I knew we could find the tumours early with the scans.
"It didn’t really affect life at the time, it was just something we had to do."
In 2014, shortly after giving birth to her second child, Jennie decided to have six weeks of radiotherapy at Western General Hospital in Edinburgh, to stop the tumour from growing, as she had been suffering from headaches and a throbbing in her left ear.
While regular scans showed the tumour had not grown, in 2017 a second tumour was found on the left side of her head and, by 2019, further investigations detected 28 cancerous tumours which had spread and metastasised to her bones, like her mum.
Jennie, who is now having hormonal treatment to stop the cancer from growing, says she and her twin brother also realise there could be health implications for their own children - but doctors have advised against testing children before the age of 10.
She said: "My diagnosis was devastating, especially for the kids.
"My family were so supportive, though. Dad comes to every meeting with consultants with me.
"James and I are always comparing notes, checking that everything is okay.
"We are a really close family and my dad is an inspiration. I feel really lucky to have him in my corner."
The Phaeo and Para Cancer Charity have already made important strides in their research, after Dr Krisztina Takacs, a biologist in Hungary, made a tiny model animal with the same defective gene using a 2mm long worm to see how it could lead to cancer.
They have also been testing two of James' tumour blocks, which are held at Dundee Ninewells tissue bank, in a bid to find a drug or cocktail of drugs that would blast them.
James, who had major surgery in November 2011 to remove five non-malignant tumours in his stomach and then again in 2018, when they found another tumour in the right side of his neck, said he was hopeful that his tumours could help find a cure.
Divorcee James, who lives in Dundee with his partner primary school teacher Karen Dewar, 38, said: "I was a little fearful that I wouldn't wake up again when I went for my second surgery, but I try to stay positive.
"The research being done is great, it's positive and fills me with hope. I'm glad my tumours can be used for some good.
"It is what it is. We've got this faulty gene, and we're in this situation. But we're trying to make positive steps to find a cure or medication that can help.
"I'm quite lucky. While I inherited mum's gene, I've inherited dad's positivity. I have lots of checks, but it doesn't affect my life and I don't have any pain.
"That may change, I may have another form of cancer, but I don't let it affect me.
"Having my family with me has been so great. And as much as it's not great to have this, it's nice to have someone like Jennie to go through this with."
If you want to support The Phaeo and Para Cancer Charity's research, you can donate here: www.gofundme.com/f/the-phaeo-and-para-cancer-charity or find out more on www.facebook.com/PhaeoPara
