Cancer in your family may be caused by an inherited genetic change if:
- You have a close (‘first degree’) relative, such as a parent, brother, sister or child, who has been diagnosed with 2 separate cancers. For example, bowel cancer and endometrial (womb) cancer
- 2 or more close relatives on the same side of your family have had the same cancer
- You or one of your relatives have a cancer most commonly seen in the opposite sex (for example, male breast cancer)
- You have Ashkenazi Jewish ancestry
- You have had cancer at a younger age than commonly seen (for example, bowel cancer under the age of 50)
This list is a guide only. If any of the above points apply to you, it is possible, but not certain, that you have an inherited genetic cause for cancer in your family.
https://www.cancer.ie/cancer-information/about-cancer/cancer-and-genes
Lynch Syndrome Ireland 