from academic skills such as reading and writing. Future directions
include the development of patient-specific risk models to help
inform parents about appropriate expectations, supports, and
behavioral demands. Given the lack of a strong relationship with the
trajectory of change in IQ, these results highlight a need to continue
evaluating adaptive functioning as a separate yet important func-
tional outcome for survivors of ependymoma. Further follow-up 5 to
10 years postirradiation will be needed to examine whether func-
tional performance remains stable. These findings suggest that
baseline performance and preirradiation factors may prove to be the
strongest predictors of functional outcome.
References
1. Central Brain Tumor Registry of the United States. CBTRUS Statistical
Report: Primary Brain and Central Nervous System Tumors Diagnosed
in the United States in 2004-2006. Hinsdale, IL: CBTRUS; 2010.
2. Merchant TE, Fouladi M. Ependymoma: new therapeutic approaches
including radiation and chemotherapy.
J Neurooncol
2005;75:287-
299.
3. Merchant TE, Li C, Xiong X, et al. Conformal radiotherapy after
surgery for paediatric ependymoma: a prospective study.
Lancet Oncol
2009;10:258-266.
4. Kun LE, Mulhern RK, Crisco JJ. Quality of life in children treated for
brain tumors. Intellectual, emotional, and academic function.
J Neu-
rosurg
1983;58:1-6.
5. Butler RW, Haser JK. Neurocognitive effects of treatment for child-
hood cancer.
Ment Retard Dev Disabil Res Rev
2006;12:184-191.
6. Conklin HM, Li C, Xiong X, et al. Predicting change in academic
abilities after conformal radiation therapy for localized ependymoma.
J Clin Oncol
2008;26:3965-3970.
7. Merchant TE, Conklin HM, Wu S, et al. Late effects of conformal
radiation therapy for pediatric patients with low-grade glioma:
prospective evaluation of cognitive, endocrine, and hearing deficits.
J
Clin Oncol
2009;27:3691-3697.
8. Mulhern RK, Merchant TE, Gajjar A, et al. Late neurocognitive
sequelae in survivors of brain tumours in childhood.
Lancet Oncol
2004;5:399-408.
9. Merchant TE, Kiehna EN, Li C, et al. Radiation dosimetry predicts IQ
after conformal radiation therapy in pediatric patients with localized
ependymoma.
Int J Radiat Oncol Biol Phys
2005;63:1546-1554.
10. Di Pinto M, Conklin HM, Li C, et al. Investigating verbal and visual
auditory learning after conformal radiation therapy for childhood
ependymoma.
Int J Radiat Oncol Biol Phys
2009;77(4):1002-1008.
11. Sparrow SS, Balla DA, Cicchetti DV. Vineland Adaptive Behavior
Scales. Circle Pines, MN: American Guidance Service, Inc.; 1984.
12. Ris MD, Beebe DW, Armstrong FD, et al. Cognitive and adaptive
outcome in extracerebellar low-grade brain tumors in children:
a report from the Children’s Oncology Group.
J Clin Oncol
2008;26:
4765-4770.
13. Stargatt R, Rosenfeld JV, Anderson V, et al. Intelligence and adaptive
function in children diagnosed with brain tumour during infancy.
J
Neurooncol
2006;80:295-303.
14. Mulhern RK, Horowitz ME, Kovnar EH, et al. Neurodevelopmental
status of infants and young children treated for brain tumors with
preirradiation chemotherapy.
J Clin Oncol
1989;7:1660-1666.
15. Kramer JH, Crittenden MR, DeSantes K, et al. Cognitive and adaptive
behavior 1 and 3 years following bone marrow transplantation.
Bone
Marrow Transplant
1997;19:607-613.
16. Hommet C, Billard C, Gillet P, et al. Neuropsychologic and adaptive
functioning in adolescents and young adults shunted for congenital
hydrocephalus.
J Child Neurol
1999;14:144-150.
17. Oken MM, Creech RH, Tormey DC, et al. Toxicity and response
criteria of the Eastern Cooperative Oncology Group.
Am J Clin Oncol
1982;5:649-655.
18. Merchant TE, Mulhern RK, Krasin MJ, et al. Preliminary results from
a phase II trial of conformal radiation therapy and evaluation of
radiation-related CNS effects for pediatric patients with localized
ependymoma.
J Clin Oncol
2004;22:3156-3162.
19. Bayley N. Bayley Scales of Infant Development. 2nd ed. New York:
The Psychological Corporation; 1993.
20. Wechsler D. Wechsler Preschool and Primary Scale of Intelligence.
Revised. San Antonio, TX: The Psychological Corporation; 1989.
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