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Saturday 1 October 2016

Definition: Tylosis esophageal cancer (TOC) is an autosomal-dominant syndrome characterized by palmoplantar keratoderma, oral precursor lesions, and a high lifetime risk of esophageal cancer.



The distribution of RHBDF2 in tylotic skin is altered in comparison with that in normal skin, and immortalized tylotic keratinocytes have decreased levels of total epidermal growth factor receptor (EGFR) and display an increased proliferative and migratory potential relative to normal cells, even when normal cells are stimulated with exogenous epidermal growth factor.

EGFR signaling is dysregulated in tylotic cells.

Open References

- RHBDF2 mutations are associated with tylosis, a familial esophageal cancer syndrome. Blaydon DC, Etheridge SL, Risk JM, Hennies HC, Gay LJ, Carroll R, Plagnol V, McRonald FE, Stevens HP, Spurr NK, Bishop DT, Ellis A, Jankowski J, Field JK, Leigh IM, South AP, Kelsell DP.
Am J Hum Genet. 2012 Feb 10;90(2):340-6.
doi : 10.1016/j.ajhg.2011.12.008
PMID: 22265016