AFP and cancer: Although a report from the Affiliated Hospital of Qingdao University showed that serum AFP levels of patients suffering from breast, esophagus, cervical, pancreatic, gastric, lung and some other types of cancers were higher than those of healthy individuals (p < 0.05), AFP is not mature enough to be a biomarker for other types of cancers due to the unconventional and non-obvious correlation between the elevation of serum AFP levels and the incidence of other cancers.