Astrocytoma

• University of Alabama at Birmingham Comprehensive Cancer Center — Birmingham, Alabama, United States
• University of South Alabama Medical Center — Mobile, Alabama, United States
• Phoenix Children's Hospital — Phoenix, Arizona, United States
• Arizona Cancer Center — Tucson, Arizona, United States

• Lurleen Wallace Comprehensive Cancer at University of Alabama - Birmingham — Birmingham, Alabama, United States
• Children's Hospital of Orange County — Orange, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• Children's Memorial Hospital - Chicago — Chicago, Illinois, United States

• CCOP - Bay Area Tumor Institute — Oakland, California, United States
• Children's Hospital & Research Center Oakland — Oakland, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States
• University of Florida Shands Cancer Center — Gainesville, Florida, United States

• UAB Comprehensive Cancer Center — Birmingham, Alabama, United States
• Children's Hospital of Orange County — Orange, California, United States
• UCSF Helen Diller Family Comprehensive Cancer Center — San Francisco, California, United States
• Children's National Medical Center — Washington D.C., District of Columbia, United States

• The Preston Robert Tisch Brain Tumor Center at Duke University Medical Center — Durham, North Carolina, United States

Not specified

• Marmara University Hospital — Istanbul, Turkey (Türkiye)

• University of Pittsburgh Cancer Institute — Pittsburgh, Pennsylvania, United States

• Medical Research Council Clinical Trials Unit — London, England, United Kingdom

• Seoul National University Hospital — Seoul, South Korea