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Abstract #2241

Molecular subgroups of medulloblastoma identification by MR Spectroscopy

Stefan Bluml 1,2 , Ashley Margol 3,4 , Ashok Panigrahy 5 , Richard Sposto 3,6 , Rebekah Kennedy 3 , Marvin D Nelson 1 , and Shahab Asgharzadeh 3,4

1 Children's Hospital Los Angeles/USC, Los Angeles, CA, United States, 2 Rudi Schulte Research Institute, Santa Barbara, CA, United States, 3 Children's Hospital Los Angeles and Saban Research Institute, Los Angeles, CA, United States, 4 Department of Pediatrics, Keck School of Medicine, University of Southern California, CA, United States, 5 Children's Hospital of Pittsburgh, Pittsburgh, PA, United States, 6 Department of Preventive Medicine, Keck School of Medicine, University of Southern California, CA, United States

Medulloblastomas are the single most prevalent pediatric brain tumor. Recently, analysis of tumor specimen identified four molecular subtypes, with sonic hedgehog (SHH) and WNT subtypes carrying significantly lower risk for disease dissemination and poor outcome than Group 3 or Group 4. In this retrospective study we show that in vivo MR spectroscopy (MRS) can be used to predict the molecular subtypes.

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