Neuroblastoma Biology Study

The purposes of this study are:

To establish a storage place or bank of samples of blood, bone marrow, and/or tumor, and
molecular components isolated from these samples from children with neuroblastoma. The stored
specimens will be shared with laboratory researchers studying high risk neuroblastoma.

To evaluate a new test of blood and bone marrow specimens to find tumor cells. The results of
this new test, called 5-gene TaqMan® Low Density Array or TLDA, will be compared between
blood and bone marrow and imaging (radiology) studies. Radiology studies (CT scans, MRI
scans, and MIBG scans) and the TLDA test will be compared for their ability to measure the
amount of tumor present and how this changes with therapy.

To collect clinical data (such as treatments received, date of diagnosis, tumor stage, etc)
and radiology scans to provide this information as needed for the laboratory studies to be
done on the specimens.

To obtain neuroblastoma tumor cells from tumor tissue, bone marrow, and/or blood to use to
start cell lines, or tumor cells that will keep growing in the laboratory. These cell lines
will be shared with laboratory researchers studying high risk neuroblastoma.

Inclusion Criteria:

- Patients must be greater than or 31 days of age.

- Patients must have had a diagnosis of high risk neuroblastoma either by histological
verification of neuroblastoma and/or demonstration of tumor cells in the bone marrow
with increased urinary catecholamines.

- All patients with refractory or recurrent high risk neuroblastoma at NANT institutions
are eligible regardless of disease status (including no measurable or evaluable tumor)
as long as they undergo a disease evaluation and appropriate samples are submitted.

- Additionally, all patients with high risk neuroblastoma without relapse treated at a
NANT institution are eligible if undergoing a disease evaluation, as long as
Children's Oncology Group specimens are prioritized.

Exclusion Criteria:

- There are no exclusion criteria on this study.