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Keywords:

  • DLK1;
  • hepatoblastoma;
  • serum marker

Abstract

Hepatoblastoma is a malignant pediatric liver tumor. The currently used diagnostic serum marker for hepatoblastoma, α-fetoprotein (AFP), is not always reliable in infants with hepatoblastoma, due to the physiologically elevated levels of AFP in this age group. In this report, we show that Delta-like 1 homolog (DLK1), a protein highly expressed during fetal development, but almost completely absent after birth, and an established liver-stem cell marker, is a new candidate serum marker of hepatoblastoma, especially in young infants. Pediatr Blood Cancer 2012;59:743–745. © 2011 Wiley Periodicals, Inc.