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Tumor marker Associated tumor types Alpha fetoprotein (AFP) germ cell tumor, hepatocellular carcinoma [8] CA15-3: breast cancer [9] CA27.29: breast cancer [10] CA19-9: Mainly pancreatic cancer, but also colorectal cancer and other types of gastrointestinal cancer. [11] CA-125
Like any elevated tumor marker, elevated AFP by itself is not diagnostic, only suggestive. Tumor markers are used primarily to monitor the result of a treatment (e.g. chemotherapy). If levels of AFP go down after treatment, the tumor is not growing. In the case of babies, after treatment AFP should go down faster than it would normally. A ...
Alpha-fetoprotein (AFP, α-fetoprotein; also sometimes called alpha-1-fetoprotein, alpha-fetoglobulin, or alpha fetal protein) is a protein [5] [6] that in humans is encoded by the AFP gene. [ 7 ] [ 8 ] The AFP gene is located on the q arm of chromosome 4 (4q13.3). [ 9 ]
Usefulness of lens culinaris agglutinin A-reactive fraction of alpha-fetoprotein (AFP-L3) as a marker of distant metastasis from hepatocellular carcinoma. Yamashiki, N., et al., Oncology Reports, 6, 1229–1232, 1999. Relationship between lens culinaris agglutinin reactive alpha-fetoprotein and biological features of hepatocellular carcinoma.
Of special concern is the secretion of alpha-fetoprotein (AFP); under some circumstances, AFP can be used as a diagnostic marker specific for the presence of yolk sac cells within the teratoma. These cells can develop into a frankly malignant tumor known as yolk sac tumor or endodermal sinus tumor.
One example of an oncofetal antigen is alpha-fetoprotein, which is produced by hepatocellular carcinoma and some germ cell tumors. Another example is carcinoembryonic antigen , which is elevated in people with colon cancer and other tumors.
In the United States, the American Association for the Study of Liver Diseases(AASLD) recommends ultrasound screenings every six months for people with cirrhosis, with or without measurement of blood levels of the tumor marker alpha-fetoprotein (AFP).
Tumor surveillance by monitoring AFP requires accurate correction for gestational age in pregnant women, and age in infants. In pregnant women, this can be achieved simply by testing maternal serum AFP rather than tumor marker AFP .