The occurrence of tumors is related to multiple factors including genetics, environment, and the lifestyle habits of the patient. Therefore, primary liver cancer does have a genetic component. If parents, siblings, grandparents, etc., have a history of liver cancer, the offspring of such patients might have a higher probability of developing liver cancer compared to the general population. However, it's not absolute, as it also depends on other factors like environment, personal dietary habits, lifestyle habits, whether one has hepatitis, alcoholic liver cirrhosis, and other similar factors. Thus, those with a family history of liver cancer are likely to have a higher risk of developing the condition and should be more vigilant about disease screening. Screening should be more frequent than for the general population, but this is not an absolute rule.