Published in:
01-10-2018 | Original Article
Genetic mutation analysis of the malignant transformation of sinonasal inverted papilloma by targeted amplicon sequencing
Authors:
Shinichiro Yasukawa, Satoshi Kano, Hiromitsu Hatakeyama, Yuji Nakamaru, Dai Takagi, Takatsugu Mizumachi, Masanobu Suzuki, Takayoshi Suzuki, Akira Nakazono, Shinya Tanaka, Hiroshi Nishihara, Akihiro Homma
Published in:
International Journal of Clinical Oncology
|
Issue 5/2018
Login to get access
Abstract
Background
The mechanism underlying the malignant transformation of inverted papilloma (IP) has not yet been elucidated.
Methods
To clarify the genes responsible for the malignant transformation, we analyzed 10 cases of IP, 8 of IP with dysplasia, and 11 of squamous cell carcinoma (SCC) by targeted amplicon sequencing.
Results
The number of mutant genes increased in the order of IP < dysplasia < SCC. Significant differences were observed in the mutation rates of three genes (KRAS, APC and STK11) in particular. TP53 was altered frequently in each group and might be involved in malignant transformation based on to the site of the mutation. A comparison of the genetic variants by region of IP tissue among patients with IP alone, and those with dysplasia or SCC revealed significant differences in the mutation rate of the KRAS gene.
Conclusion
Identification of genetic mutations in KRAS is effective for predicting the malignant transformation of IP.