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Long-Term Cognitive and Functional Outcomes in Children with Mucopolysaccharidosis (MPS)-IH (Hurler Syndrome) Treated with Hematopoietic Cell Transplantation

  • A. S. Kunin-Batson
  • E. G. ShapiroEmail author
  • K. D. Rudser
  • C. A. Lavery
  • K. J. Bjoraker
  • S. A. Jones
  • R. F. Wynn
  • A. Vellodi
  • J. Tolar
  • P. J. Orchard
  • J. E. Wraith
Research Report
Part of the JIMD Reports book series (JIMD, volume 29)

Abstract

The long-term cognitive and functional outcomes of children with mucopolysaccharidosis type I (MPS-IH) post-hematopoietic cell transplant (HCT) are not well documented, and the role of genetic and treatment factors in these outcomes has yet to be defined. In this multi-site, international study, we (1) characterize the cognitive and functional status of 47 individuals (ages 2–25, mean of 10.6 years) with MPS-IH who are 1–24 years post HCT (mean = 9 years) and (2) examine contributions of genotype, transplant characteristics, and sociodemographic factors to cognitive ability, adaptive behavior, and quality of life. The overall cognitive ability of our sample was mildly impaired, more than two standard deviations below general population norms. Parent reported adaptive behaviors (i.e., communication, daily living, and motor skills) were similarly impaired with a relative strength in socialization. Quality of life, as reported by parents, fell more than two standard deviations below population norms for physical functioning; however, psychosocial quality of life (emotional well-being) approximated population norms. In linear regression analysis, adjusted for demographic and treatment factors, mutation severity was associated with lower cognitive ability (p = 0.005) and adaptive functioning (p = 0.004), but not parent ratings of children’s quality of life. Older age at HCT was associated with poorer physical quality of life (p = 0.002); lower socioeconomic status (p = 0.028) and unrelated bone marrow HCT (p = 0.010) were associated with poorer psychosocial quality of life. Implications for screening and early intervention for children at risk for poorer cognitive and functional outcomes are described.

Keywords

Total Body Irradiation Mutation Type Hematopoietic Cell Transplantation Adaptive Functioning Adaptive Skill 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

We would like to acknowledge the assistance of Edward Bendert, Jean Mercer, and Brianna Yund in the completion of this study and extend our gratitude to the families who participated in this research. This study was supported by The Society for Mucopolysaccharide Disease in the United Kingdom and in part by the National MPS Society, the United States (K. Bjoraker). Work on this study by Kyle Rudser was supported by UL1TR000114 from NCATS of NIH.

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Copyright information

© SSIEM and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • A. S. Kunin-Batson
    • 1
    • 2
  • E. G. Shapiro
    • 2
    Email author
  • K. D. Rudser
    • 3
  • C. A. Lavery
    • 4
  • K. J. Bjoraker
    • 5
  • S. A. Jones
    • 6
  • R. F. Wynn
    • 6
  • A. Vellodi
    • 7
  • J. Tolar
    • 2
  • P. J. Orchard
    • 2
  • J. E. Wraith
    • 8
  1. 1.HealthPartners Institute for Education and ResearchMinneapolisUSA
  2. 2.Department of PediatricsUniversity of MinnesotaMinneapolisUSA
  3. 3.Division of BiostatisticsUniversity of MinnesotaMinneapolisUSA
  4. 4.Society for Mucopolysaccharide DiseaseBuckinghamshireUK
  5. 5.Neuropsychology ConsultantsMinneapolisUSA
  6. 6.Royal Manchester Children’s HospitalManchesterUK
  7. 7.Great Ormond Street HospitalLondonUK
  8. 8.Royal Manchester Children’s HospitalManchesterUK

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