KRAS Mutation in Endometriosis-Associated Ovarian Borderline and Malignant Epithelial Tumors

Author:

Sarmadi SoheilaORCID,Izadi-Mood Narges,Fakhari Marzieh,Shahsiah Reza,Miri Rosa,Mozafari Maniya

Abstract

Background: Endometriosis is a common disease among women with the capacity to transform into ovarian neoplasms. KRAS mutation is a keystone in tumor-genesis of many malignant neoplasms. Objectives: In the current study, we investigated KRAS mutations in endometriosis-associated ovarian borderline and malignant epithelial tumors. Methods: The specimens of 42 consecutive patients undergoing a surgical procedure whose final diagnosis comprised endometriosis-associated borderline and malignant epithelial ovarian tumors including 12 borderline epithelial tumors and 30 ovarian epithelial carcinomas were histopathologically reviewed. All cases were evaluated regarding the type of tumor, differentiation and simultaneous presence of endometriosis or atypical endometriosis. DNA extraction from the selected paraffin block was done and mutation of codons 12 and 13 was assessed. Results: Due to the quality of genomic DNA for PCR study was not acceptable in 6 out of 42 cases, among remaining 36 cases, KRAS mutation was observed in 6 cases including 2 cases with mutations in 2nd base of 12th codon (G→T), 3 cases with substitution of G→A in the 2nd base of 12th codon, and one with substitution of G→T in the 1st base of 12th codon. Conclusions: We evaluated the KRAS mutation in the spectrum of ovarian epithelial tumors associated with endometriosis for treatment approaches including targeted therapies. Our results suggested a possible link between KRAS mutation and endometriosis-associated ovarian borderline and malignant tumors but there was no convincing evidence to prove a definite linkage.

Publisher

Briefland

Subject

Pharmacology (medical),Cancer Research,Radiology, Nuclear Medicine and imaging,Oncology,Surgery

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