Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology · 2022
Chronic rhinosinusitis with nasal polyps does not harbor KRAS, BRAF, and EGFR mutations.
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da Silva Vieira Tamara, Guimarães Letícia Martins, Diniz Marina Gonçalves, Gomes-Fernandes Bianca, Anselmo-Lima Wilma Terezinha, Tamashiro Edwin, Bastos-Rodrigues Luciana, De Marco Luiz, Gomez Ricardo Santiago, Valera Fabiana Cardoso Pereira, Gomes Carolina Cavalieri
Аннотация
BACKGROUND: Chronic rhinosinusitis is a chronic inflammation of the nasal mucosa and nasal polyps are present in ~25%-30% of cases (chronic rhinosinusitis with nasal polyps [CRSwNP]). CRSwNP is associated with significant morbidity and decreased quality of life, making it clinically important. Inflammation leads to DNA damage and DNA mutations occur in some inflammatory diseases. Notably, mutations in KRAS, BRAF, and EGFR have been reported in different human benign and malignant neoplastic lesions. In addition, KRAS mutations have also been reported in non-neoplastic tissues under chronic inflammatory conditions. Importantly, KRAS mutations have been reported in oncocytic sinonasal papillomas and sinonasal squamous cell carcinoma associated with oncocytic sinonasal papilloma and EGFR mutations have been reported in sinonasal adenocarcinoma, inverted sinonasal papilloma, and sinonasal squamous cell carcinoma associated with inverted sinonasal papilloma. The molecular pathogenesis of nasal polyps remains unclear. Therefore, the present study aimed to investigate the presence of KRAS, BRAF, and EGFR pathogenic mutations in CRSwNP.
METHODS: Fourteen chronic rhinosinusitis-associated nasal polyp samples were direct sequenced, targeting KRAS exons 2, 3, and 4 (encompassing important hotspot mutations, including codons 12, 13, 61 and 146), BRAF exons 11 and 15, and EGFR exons 19 and 20.
RESULTS: No pathogenic mutations were detected in the sequenced regions of KRAS, BRAF, and EGFR genes.
CONCLUSION: This finding suggests that mutations in these genes are not a frequent event in CRSwNP, and, if they occur, they might represent marginal events at best.
METHODS: Fourteen chronic rhinosinusitis-associated nasal polyp samples were direct sequenced, targeting KRAS exons 2, 3, and 4 (encompassing important hotspot mutations, including codons 12, 13, 61 and 146), BRAF exons 11 and 15, and EGFR exons 19 and 20.
RESULTS: No pathogenic mutations were detected in the sequenced regions of KRAS, BRAF, and EGFR genes.
CONCLUSION: This finding suggests that mutations in these genes are not a frequent event in CRSwNP, and, if they occur, they might represent marginal events at best.