Smoothened gene alterations in keratocystic odontogenic tumors

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Background: It has been widely demonstrated that the hedgehog pathway is strongly associated with basal cell carcinoma of the skin (NBCCS). To assess potential DNA alterations related to keratocystic odontogenic tumors (KCOTs), we sequenced smoothened (SMO) genes in 12 sporadic KCOTs.Methods: Polymerase chain reaction (PCR), capillary electrophoresis and dideoxy chain-termination sequencing were used to examine potential DNA alterations in sporadic KCOTs.Results: Five alterations in SMO genes were detected. Four of these mutations consisted of two synonymous and three missense mutations; two of which have not been reported to date (c.T776A, c.T1281G).Conclusions: SMO genes may play an important role in the sonic hedgehog (SHH) pathway and could also be responsible for generating KCOTs and NBCCS. However, their influence on SHH signaling remains to be elucidated.




Rui, Z., Li-Ying, P., Jia-Fei, Q., Ying-Ying, H., Feng, C., & Tie-Jun, L. (2014). Smoothened gene alterations in keratocystic odontogenic tumors. Head and Face Medicine, 10(1).

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