scholarly journals RET activation in adult and childhood papillary thyroid carcinoma using a reverse transcriptase-n-polymerase chain reaction approach on archival-nested material

1996 ◽  
Vol 74 (4) ◽  
pp. 585-589 ◽  
Author(s):  
GH Williams ◽  
S Rooney ◽  
GA Thomas ◽  
G Cummins ◽  
ED Williams
Keyword(s):  
Polymerase Chain Reaction ◽  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Reverse Transcriptase ◽  
Papillary Thyroid ◽  
Chain Reaction ◽  
Polymerase Chain Reaction Approach ◽  
Polymerase Chain

scholarly journals Mutation in BRAF and Other Members of the MAPK Pathway in Papillary Thyroid Carcinoma in the Pediatric Population

2016 ◽  
Vol 140 (2) ◽  
pp. 134-139 ◽  
Author(s):  
Ryan J. Gertz ◽  
Yuri Nikiforov ◽  
William Rehrauer ◽  
Lee McDaniel ◽  
Ricardo V. Lloyd
Keyword(s):  
Polymerase Chain Reaction ◽  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Mapk Pathway ◽  
Pediatric Population ◽  
Braf V600e Mutation ◽  
Braf V600e ◽  
Papillary Thyroid ◽  
Chain Reaction ◽  
Polymerase Chain

Context Papillary thyroid carcinoma (PTC) is an uncommon tumor in the pediatric population. A limited number of studies have examined genetic mutations affecting the mitogen-activated protein kinase (MAPK) pathway in the pediatric population. Objective To examine mutations affecting this pathway in PTC in our pediatric population and compare the BRAF V600E mutation rates in pediatric and adult tumors. Design Eighty-four patients, including 14 pediatric and 70 adult, with PTC were tested for the BRAF V600E mutation by using real-time polymerase chain reaction and sequencing. Additionally, we examined the rate of RAS point mutations with real-time polymerase chain reaction and rearrangements of RET/PTC1 and RET/PTC3 in the pediatric group with fluorescence in situ hybridization. Clinical and histologic data were compared as well. Results Of 77 tumors that had an interpretable result, the BRAF V600E mutant was identified in 4 of 13 pediatric patients (31%) and 43 of 64 adult patients (67%), which was a significant difference (using Fisher exact test, P = .03). One pediatric and 6 adult cases did not reveal an interpretable result with melting curve analysis. One of these cases harbored a rare 3–base pair deletion mutation (c.1799_1801delTGA). Mutations in RAS genes were not seen in any pediatric tumors. One tumor with a RET/PTC1 rearrangement and another with RET/PTC3 were identified in the pediatric population (15%). Conclusions The rate of the BRAF V600E mutation in the pediatric population is significantly lower than that seen in the adult population. Mutations in RAS do not contribute significantly to pediatric PTC. This experience from our institution adds to the growing body of knowledge regarding tumor genetics in pediatric PTC.

Sign in / Sign up

Export Citation Format

Share Document