title: Prognostic value of the BRAF V600E mutation in papillary thyroid carcinoma.
abstract: The aim of the present study was to investigate the prevalence of the BRAF V600E mutation in papillary thyroid carcinoma (PTC) and to determine the correlation between this mutation and indicators of poor prognosis and outcome in patients with PTC. The BRAF V600E mutation status was analyzed in 187 tumor samples using the multiplex allele-specific PCR method. Univariate and multivariate analyses were performed to investigate the association of the BRAF V600E mutation with clinical features and patient outcome. The sensitivity of the multiplex allele-specific PCR combined with denaturing high-performance liquid chromatography reached ~1%. The BRAF V600E mutation was observed in 63.6% (119/187) of tumor tissues, predominantly in PTC specimens, and no BRAF mutation was identified in other benign-type thyroid diseases. The univariate analysis indicated that the BRAF V600E mutation was associated with age, tumor stage and prognosis (P<0.05). In addition, the frequency of the BRAF V600E mutation was significantly different in the central (75.3%) and lateral neck (49.3%) lymph nodes of patients with lymph node metastasis. Multivariate logistic regression analysis showed that the BRAF V600E mutation (HR, 2.471; 95% CI, 1.149-5.312) and lymph node metastasis (HR, 3.003; 95% CI, 1.027-8.771) are independent factors that predict tumor prognosis. Thus, the BRAF V600E mutation is an independent risk factor that may be used to predict thyroid cancer persistence/recurrence.
authors.affiliation: The Center for Reproductive Medicine, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei, Anhui 230001, P.R. China.
authors.forename: Guoping
authors.initials: G
authors.lastname: He
authors.affiliation: Molecular Pathology Center of the General Hospital of the Air Force PLA, Beijing 100081, P.R. China.
authors.forename: Baojian
authors.initials: B
authors.lastname: Zhao
authors.affiliation: Molecular Pathology Center of the General Hospital of the Air Force PLA, Beijing 100081, P.R. China.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Thyroid and Breast Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China.
authors.forename: Rixiang
authors.initials: R
authors.lastname: Gong
keywords: BRAF V600E; papillary thyroid carcinoma; prognostic value