Study of Specimens From Young Patients With Neuroblastoma

Study Overview
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Brief Summary
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This research trial studies specimens from young patients with neuroblastoma. Studying the genes expressed in specimens from patients with cancer may help doctors identify biomarkers related to cancer. It may also help doctors predict how patients will respond to treatment.

Detailed Description
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PRIMARY OBJECTIVES: I. Establish a robust messenger ribonucleic acid (mRNA) gene expression classifier for improved outcome prediction in children with neuroblastoma by using real-time polymerase chain reaction (PCR) to quantify mRNA levels from genes that have been shown in at least 2 independent studies to have predictive power. II. Identify microRNA (miRNA) patterns that have prognostic significance in neuroblastoma (NB) as accumulating evidence indicates that alterations in miRNA expression play a critical role in tumorigenesis and can be used in prognostic evaluation. III. To perform an integrated analysis of the established microRNA classifier with our mRNA signature to determine whether it results in even better classification of NB tumors. OUTLINE: Previously collected samples are analyzed for 59 prognostic genes by real-time quantitative PCR-based gene expression profiling.

Official Title
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Prognostic Multigene Expression Classification of Neuroblastoma Patients

Conditions
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Localized Resectable Neuroblastoma, Localized Unresectable Neuroblastoma, Regional Neuroblastoma, Stage 4S Neuroblastoma

Intervention / Treatment
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* Other: laboratory biomarker analysis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnosis of primary Neuroblastoma Untreated disease RNA samples from primary untreated NB-tumors available in Children's Oncology Group (COG) repository At least 60% tumor cells At least 2 years of follow-up from the date of diagnosis Full clinical and biological annotation

Ages Eligible for Study
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Maximum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Ancillary-Correlative (gene expression profiling)<br>Previously collected samples are analyzed for 59 prognostic genes by real-time quantitative PCR-based gene expression profiling. | Other: laboratory biomarker analysis<br>* Correlative studies<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| mRNA expression levels from genes that have been shown (in at least two independent studies) to have power for outcome prediction in children with NB, assessed by real-time PCR | Multivariate logistic regression analyses will be performed to determine if the mRNA expression signature is a significant independent predictor after controlling for currently used risk factors. | Baseline | 
| miRNA patterns that have prognostic significance in NB, assessed by a reverse transcription quantitative PCR-based 'stem-loop' method to quantify expression levels | Multivariate logistic regression analyses will be performed to determine if the miRNA expression signature is a significant independent predictor after controlling for currently used risk factors. | Baseline |