P-0163 - The value of transcription factor Scratch2 in colorectal cancer

Date 28 June 2014
Event World GI 2014
Session Poster Session
Topics Colon Cancer
Rectal Cancer
Translational Research
Presenter Nikola Kolev
Citation Annals of Oncology (2014) 25 (suppl_2): ii14-ii104. 10.1093/annonc/mdu165
Authors N. Kolev1, V. Ignatov1, A. Tonev1, T. Kirilova2, E. Encheva1, V. Bojkov1, P. Panayotov1, K. Ivanov1
  • 1Medical University of Varna, Varna/BG
  • 2Medical University, Varna/BG



The Scratch genes is described as independent subgroup of the Snail superfamily of transcription factors (TFs). Under normal conditions, the Scratch genes are expressed exclusively in the nervous system, where they regulate cortical neurogenesis (Paul, Tonchev, et al. Cerebral Cortex 2012, Epub ahead of print; doi: 10.1093/cercor/bhs356). However, expression of Scrt2 under pathological conditions is poorly characterized, especially in humans.


We report the expression of Scrt2 by immunohistochemistry in 100 primary or metastatic (hepatic metastasis) colorectal cancer biopsies acquired through routine operations at the Department of General Surgery, Medical University-Varna, Bulgaria. We also evaluated the histological type and clinical stage of the tumors.


We found that both the primary and the metastatic tumor strongly expressed Scrt2 protein. Interestingly, the expression was mostly in the cytoplasm, in accordance with the reported pattern in the developing cortex. Notably, in the hepatic metastatic tumors, we found no or scarce expression in the normal hepatic parenchyma surrounding the tumor, while a strong expression in the colorectal cancer metastasis.


Scrt2 represents a putative novel marker for colorectal cancer. Detailed correlation of the clinical parameters, such as patient survival, and the expression level of Scrt2 might yield novel prognostic value of this TF in the pathogenesis of colorectal cancer.