Eight common cancers that are easily inherited

1. Breast cancer
        In the 1990s, breast cancer susceptibility genes BRCA1 and BRCA2 were discovered, but only 5% to 10% of breast cancers are related to genetic inheritance.
        Under normal circumstances, a mother or sister in a family has breast cancer, and the risk of her daughter or sister getting breast cancer is about three times higher than that of an average woman.

2. Ovarian cancer
        About 20%~25% of epithelial ovarian cancer is related to genetic factors. Family history of breast cancer, ovarian cancer, colorectal cancer, etc., may increase the risk of ovarian cancer in female members of the family.

3. Colorectal cancer
        Familial colon polyps are easy to develop into colorectal cancer. If parents have colorectal cancer caused by the above-mentioned diseases, the probability of their children suffering from the same type of cancer is as high as 50%.

4. Gastric cancer
        Among all patients with gastric cancer, 10% have obvious familial gathering tendency.
        A large amount of data shows that family tumor history, especially the history of gastric cancer in immediate family members, is a risk factor for gastric cancer. Relatives of patients with gastric cancer are two to three times more likely to develop gastric cancer than others.

5. Lung cancer
        A survey in Japan showed that 35.8% of patients with lung squamous cell carcinoma had a family history; among female patients with alveolar cell carcinoma, 58.3% had a family history.

6. Endometrial cancer
        According to statistics, about 5% of all endometrial cancer patients are caused by genetic factors. The age of onset of these patients is 10 to 20 years younger than the average age of patients with sporadic endometrial cancer.

7. Pancreatic cancer
        5% to 10% of family members of pancreatic cancer patients also have a history of the disease. If more than one immediate family member (parents, siblings, children, etc.) suffers from the disease, the risk of the disease will increase significantly, and it often occurs before the age of 50.

8. Prostate cancer
        If an immediate family member suffers from prostate cancer, the risk of prostate cancer will double. The relative risk of prostate cancer in two or more relatives will increase by 5 to 11 times.