Molecular Analysis of Samples From Patients With Diffuse Intrinsic Pontine Glioma and Brainstem Glioma

High grade diffuse intrinsic pontine glioma (DIPG) accounts for approximately 80% of
pediatric brainstem tumors and 10% of pediatric brain tumors, and is the most lethal form of
brainstem gliomas in children. There is currently no effective therapy to treat these tumors.
We hypothesize that this tumor exhibits unique molecular abnormalities leading to altered RNA
and protein expression. The aim of this trial is to collect specimens from pediatric patients
with diffuse intrinsic pontine glioma including serum, cerebrospinal fluid, urine, brain
tumor and other constitutional tissue, during therapy and/or at autopsy. Our goal is to study
this tissue to characterize the genetic abnormalities that lead to tumor formation in order
to identify key molecules as biomarkers which we can target to design and test new and more
effective treatments.

Inclusion Criteria:

- Patients of any age with clinical and radiologic diagnosis of diffuse intrinsic
pontine glioma

- Patients with other high-grade gliomas originating in the brainstem

- Patients with focal gliomas (WHO grade I/II) of the brainstem

Exclusion Criteria:

- Patients with any type of infiltrative low grade (WHO grade I and II) or high grade
glioma (WHO grade III and IV) originating outside the brainstem

- Patients harboring primary brainstem tumors with other histologic diagnoses (e.g.,
PNET)