title: Detection of BRAF mutations in thyroid nodules by allele-specific PCR using a dual priming oligonucleotide system.
abstract: With various methods, BRAF mutations have been detected in 73.4% to 87.1% of papillary thyroid carcinomas (PTCs) in Korea. We assessed the ability of allele-specific polymerase chain reaction using a dual priming oligonucleotide system, compared with direct sequencing and pyrosequencing, to detect BRAF mutations in fine-needle aspiration specimens from 85 patients undergoing thyroidectomy. Final pathologic diagnoses were 55 malignant lesions and 30 benign lesions. We detected BRAF mutations in 47 (90%) of 52 PTCs by at least 1 method. The sensitivity of the dual priming oligonucleotide system (88.5%) was slightly higher than that of direct sequencing (82.7%) and pyrosequencing (86.5%). The specificity and positive predictive value of all 3 methods were 100%. The dual priming oligonucleotide system is a simple, rapid, and reliable method for detecting BRAF mutations. This method may be a useful adjunct tool to improve the preoperative diagnostic accuracy of PTC in fine-needle aspiration biopsy specimens.
authors.affiliation: Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Pungnap-dong, Songpa-gu, Seoul 138-736, Korea.
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Lee
authors.forename: Jene
authors.initials: J
authors.lastname: Choi
authors.forename: Tae Sook
authors.initials: TS
authors.lastname: Hwang
authors.forename: Young Kee
authors.initials: YK
authors.lastname: Shong
authors.forename: Suck Joon
authors.initials: SJ
authors.lastname: Hong
authors.forename: Gyungyub
authors.initials: G
authors.lastname: Gong
mesh_terms: D018263:Adenocarcinoma, Follicular / Q000235:genetics* / Q000473:pathology; D044963:Biopsy, Fine-Needle; D002291:Carcinoma, Papillary / Q000235:genetics* / Q000473:pathology; D004252:DNA Mutational Analysis; D004273:DNA, Neoplasm / Q000032:analysis; D006801:Humans; D009154:Mutation; D020411:Oligonucleotide Array Sequence Analysis; D016133:Polymerase Chain Reaction; D011237:Predictive Value of Tests; D048493:Proto-Oncogene Proteins B-raf / Q000235:genetics*; D016606:Thyroid Nodule / Q000235:genetics* / Q000473:pathology; D013965:Thyroidectomy
chemical_list: D004273:DNA, Neoplasm; C482119:BRAF protein, human; D048493:Proto-Oncogene Proteins B-raf