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DHPLC is a highly sensitive and rapid screening method to detect BRAF(V600E) mutation in papillary thyroid carcinoma.

Abstract

The BRAF(V600E) mutation has been reported to occur in 30% to 80% of papillary thyroid carcinomas (PTCs). Although direct sequencing is the method most commonly used to identify mutations, this technique is not sensitive enough to accurately detect low level mutation. To determine the optimal diagnostic method for detecting the BRAF(V600E) mutation in PTC, we compared the diagnostic efficacy of four representative detection methods in formalin-fixed paraffin-embedded thyroid tissues obtained from 40 patients diagnosed with PTC. To detect the BRAF(V600E) mutation, we amplified exon 15 of the BRAF gene and performed mutational analysis with direct sequencing, denaturing high-performance liquid chromatography (DHPLC), pyrosequencing and colorimetric assay. The BRAF mutation was detected in 33 cases (82.5%) by DHPLC, 23 cases (57.5%) by direct sequencing, 22 cases (55.0%) by pyrosequencing, and 37 cases (92.5%) by colorimetric assay. The sensitivity, negative predictive value and accuracy of DHPLC were 100%. The specificity and positive predictive values for DHPLC, direct sequencing and pyrosequencing were 100%, and for colorimetric assay they were 14.3% and 83.8%, respectively. The kappa value for DHPLC was a perfect 1.0, which was superior to the other methods. In conclusion, DHPLC is a sensitive, specific and accurate method for detecting the BRAF(V600E) mutation, especially low level mutation, in PTC.

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  • Publisher Full Text

    • Authors

    Kim TE, Jung ES, Jung CK, Bae JS, Kim SN, Kim GS, Lee HN, Kang CS, Choi YJ

    Institution

    Department of Hospital Pathology, Seoul St. Mary's Hospital, The Catholic University of Korea, Republic of Korea.

    Source

    Experimental and molecular pathology 94:1 2013 Feb pg 203-9

    MeSH

    Adult
    Aged
    Carcinoma
    Chromatography, High Pressure Liquid
    Colorimetry
    DNA Mutational Analysis
    DNA, Neoplasm
    Female
    Humans
    Male
    Middle Aged
    Mutation
    Paraffin Embedding
    Proto-Oncogene Proteins B-raf
    Sensitivity and Specificity
    Sequence Analysis, DNA
    Thyroid Neoplasms
    Tissue Fixation

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    22691412