Protocol for qRT-PCR analysis from formalin fixed paraffin embedded tissue sections from diffuse large b-cell lymphoma: Validation of the six-gene predictor score

As a part of an international study on the molecular analysis of Diffuse Large B-cell Lymphoma (DLBCL), a robust protocol for gene expression analysis from RNA extraction to qRT-PCR using Formalin Fixed Paraffin Embedded tissues was developed. Here a study was conducted to define a strategy to valid...

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Veröffentlicht in:Oncotarget 2016-12, Vol.7 (50), p.83319-83329
Hauptverfasser: Tekin, Nilgun, Omidvar, Nader, Morris, Tim Peter, Conget, Paulette, Bruna, Flavia, Timar, Botond, Gagyi, Eva, Basak, Ranjan, Naik, Omkar, Auewarakul, Chirayu, Sritana, Narongrit, Levy, Debora, Cerci, Juliano Julio, Bydlowski, Sergio Paulo, Pereira, Juliana, Dimamay, Mark Pierre, Natividad, Filipinas, Chung, June-Key, Belder, Nevin, Kuzu, Isinsu, Paez, Diana, Dondi, Maurizio, Carr, Robert, Ozdag, Hilal, Padua, Rose Ann
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container_issue 50
container_start_page 83319
container_title Oncotarget
container_volume 7
creator Tekin, Nilgun
Omidvar, Nader
Morris, Tim Peter
Conget, Paulette
Bruna, Flavia
Timar, Botond
Gagyi, Eva
Basak, Ranjan
Naik, Omkar
Auewarakul, Chirayu
Sritana, Narongrit
Levy, Debora
Cerci, Juliano Julio
Bydlowski, Sergio Paulo
Pereira, Juliana
Dimamay, Mark Pierre
Natividad, Filipinas
Chung, June-Key
Belder, Nevin
Kuzu, Isinsu
Paez, Diana
Dondi, Maurizio
Carr, Robert
Ozdag, Hilal
Padua, Rose Ann
description As a part of an international study on the molecular analysis of Diffuse Large B-cell Lymphoma (DLBCL), a robust protocol for gene expression analysis from RNA extraction to qRT-PCR using Formalin Fixed Paraffin Embedded tissues was developed. Here a study was conducted to define a strategy to validate the previously reported 6-gene (LMO2, BCL6, FN1, CCND2, SCYA3 and BCL2) model as predictor of prognosis in DLBCL. To avoid variation, all samples were tested in a single centre and single platform. This study comprised 8 countries (Brazil, Chile, Hungary, India, Philippines, S. Korea, Thailand and Turkey). Using the Kaplan-Meier and log rank test on patients (n=162) and two mortality risk groups (with those above and below the mean representing high and low risk groups) confirmed that the 6-gene predictor score correlates significantly with overall survival (OS, p
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Here a study was conducted to define a strategy to validate the previously reported 6-gene (LMO2, BCL6, FN1, CCND2, SCYA3 and BCL2) model as predictor of prognosis in DLBCL. To avoid variation, all samples were tested in a single centre and single platform. This study comprised 8 countries (Brazil, Chile, Hungary, India, Philippines, S. Korea, Thailand and Turkey). Using the Kaplan-Meier and log rank test on patients (n=162) and two mortality risk groups (with those above and below the mean representing high and low risk groups) confirmed that the 6-gene predictor score correlates significantly with overall survival (OS, p&lt;0.01) but not with event free survival (EFS, p=0.18). Adding the International Prognostic Index (IPI) shows that the 6-gene predictor score correlates significantly with high IPI scores for OS (p&lt;0.05), whereas those with low IPI scores show a trend not reaching significance (p=0.08). 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subjects Aged
Asia
Biomarkers, Tumor - genetics
Biopsy
Disease-Free Survival
Europe
Female
Fixatives - chemistry
Formaldehyde - chemistry
Gene Expression Profiling - methods
Gene Expression Profiling - standards
Genetic Predisposition to Disease
Humans
Kaplan-Meier Estimate
Lymphoma, Large B-Cell, Diffuse - drug therapy
Lymphoma, Large B-Cell, Diffuse - genetics
Lymphoma, Large B-Cell, Diffuse - mortality
Lymphoma, Large B-Cell, Diffuse - pathology
Male
Middle Aged
Paraffin Embedding
Phenotype
Predictive Value of Tests
Proportional Hazards Models
Real-Time Polymerase Chain Reaction - standards
Reproducibility of Results
Research Paper
Reverse Transcriptase Polymerase Chain Reaction - standards
South America
Time Factors
Tissue Fixation - methods
Transcriptome
title Protocol for qRT-PCR analysis from formalin fixed paraffin embedded tissue sections from diffuse large b-cell lymphoma: Validation of the six-gene predictor score
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