1. Comparison of PANAMutyper and PNAClamp for Detecting KRAS Mutations from Patients With Malignant Pleural Effusion.
- Author
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Choi SY, Kim HW, Jeon SH, Kim BN, Kang N, Yeo CD, Park CK, Kim YK, Lee YH, Lee KY, Lee SH, Park JY, Park MS, Yim HW, and Kim SJ
- Subjects
- Adult, Aged, Aged, 80 and over, Alleles, Cell Line, Tumor, DNA Mutational Analysis standards, Female, Gene Frequency, Genotype, Humans, Male, Middle Aged, Sensitivity and Specificity, DNA Mutational Analysis methods, Mutation, Pleural Effusion, Malignant diagnosis, Pleural Effusion, Malignant genetics, Proto-Oncogene Proteins p21(ras) genetics
- Abstract
Background/aim: KRAS is one of the frequently mutated genes in human cancers and often relates with drug resistance and poor prognosis. PANAMutyper™ is a novel technology that integrates PNAClamp™ and PANA S-Melting™. In the present study, PANAMutyper™ and PNAClamp™ were compared for the detection of KRAS mutations using different samples of patients with malignant pleural effusion., Patients and Methods: A total of 103 patients (including 56 lung adenocarcinoma, 10 lung squamous carcinoma, 17 small cell lung cancer, 3 large cell lung cancer, 3 stomach cancer, 2 ovarian cancer, and others) with malignant pleural effusion were investigated using matched tumor tissue, cell block, and pleural effusion samples. The diagnostic performance of these two methods was compared., Results: KRAS mutations were detected in 18 (17.5%) of 103 patients using tissue, cell block, and pleural effusion samples. All 18 patients with KRAS mutations were detected by PANAMutyper™ using any sample type, however, only 7 cases were detected by PNAClamp™. Among the subtypes of KRAS mutations, substitution in codon 12, 35G>T was the most frequent, followed by substitution in codon 12, 35G>A and codon 12, 34G>A. In pleural effusion specimens, PANAMutyper™ showed a better diagnostic performance compared to PNAClamp™., Conclusion: PANAMutyper™ had a diagnostic superiority for the detection of KRAS mutations in patients with malignant pleural effusion compared to PNAClamp™, although there was a concordance between PANAMutyper™ and PNAClamp™ results. Therefore, PANAMutyper™ can be used for a more sensitive and accurate detection of KRAS mutations., (Copyright© 2019, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.)
- Published
- 2019
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