Correlation analysis was performed on the above clustering groups and the clinical features and the result indicated that a significant correlation was found between the rich or poor blood supply type and tumor diameter (P = 0.013), while no significant correlation was found with patient gender, nationality, age, BMI, AFP, CA199, HBsAg and liver cirrhosis (all P > 0.05) (Table 3). This evidence concerns the gene AFP and neoplasm.