Most people diagnosed with colorectal cancer are at least 65 years old, but I was only 45 when doctors discovered my cancer, which they believed had been growing inside me for at least a decade. As someone who exercises regularly and maintains a healthy diet, I was shocked by my diagnosis.My doctors and I assumed that it was simply a case of bad luck.
“as many as 10% of colorectal cancer patients have an inherited gene mutation that caused their illness. I should know, because I was one of them.”
“I’ve heard people say that they don’t want to get genetic testing because there’s no way to prevent hereditary cancer, therefore it’s better not to know. But that couldn’t be further from the truth.”
The BowelScreen programme will send an invitation to men and women aged 60 to 69 years to take part in the programme.
If you are aged between 60 to 69 years and living in Ireland, you can ring BowelScreen on Freephone 1800 45 45 55 to check your details are on the register.
A BowelScreen home test kit will be sent to you in the post with instructions about how to do the test.
If you have any concerns about your bowel health or symptoms you should contact your GP immediately.
Symptoms of bowel cancer
The symptoms of bowel cancer can include:
Bleeding from the back passage or blood in your poo;
A change in normal bowel habits;
A lump that your doctor can feel in your back passage or abdomen (more commonly on the right side);
A feeling of needing to strain in your back passage (as if you need to pass a bowel motion), even after opening your bowels;
Losing weight;
Pain in your abdomen or back passage; or
A lower than normal level of red blood cells (anaemia).
Dana-Farber’s Matt Yurgelun, MD, discusses Lynch Syndrome research and the challenges of a Lynch Syndrome diagnosis. Dana-Farber’s Lynch Syndrome Center offers genetic testing to help identify Lynch Syndrome carriers who may be at increased risk for a variety of cancers.
To explain what constitutional mismatch repair deficiency (CMMRD) is, we first need to talk about Lynch Syndrome. Lynch Syndrome increases a person’s risk of getting certain types of cancer in their lifetime, including bowel cancer, which is the most common cancer associated with this genetic condition.
What is Lynch Syndrome?
Lynch Syndrome affects genes called mismatch repair genes. They are genes responsible for correcting changes in genetic code when cells grow and divide. As the cells grow and make copies of their DNA, they can make mistakes, which mismatch repair genes rectify so that those errors don’t lead to cancer. So if these mismatch repair genes are abnormal or have a “mutation”, they may not repair those mistakes and cancer can occur.
What is CMMRD?
CMMRD, like Lynch Syndrome, is a genetic condition that makes it more likely for a person to get certain types of cancer, except this time it occurs when a child has inherited mutated genes from both parents, and the cancer risk is even higher. PMS2 is the most commonly affected gene in CMMRD.
To illustrate this: If mum has one “good” copy of the gene and one bad copy, I could inherit her good gene or her bad gene. And the same goes for my dad. My sister could inherit both of their good copies, and therefore doesn’t have Lynch Syndrome or CMMRD, and neither do her children. Whereas if I inherited both of their bad genes I therefore have CMMRD.
It is thought that… As many as 1 in 300 may have Lynch Syndrome, while the odds of having CMMRD are one in a million – or 0.0001%.
The current study found low CRC mortality in path_MMR carriers who receive colonoscopy surveillance while some extracolonic cancers were associated with high mortality. Further improvement of survival in LS may require a focus on the prevention and treatment of non-colorectal cancers, likely including approaches based upon the immune response to MSI pre-cancerous lesions and cancers.
This study also provides more precise cumulative cancer incidences for path_MMR carriers than have been available previously, stratified by age, gene, organ, and gender.
Lynch Syndrome Ireland 