Abstract
Purpose
Congenital central hypoventilation syndrome (CCHS) and rapid-onset obesity with hypothalamic dysfunction, hypoventilation, and autonomic dysregulation (ROHHAD) are rare disorders of autonomic regulation with risk for disrupted neurocognitive development. Our aim is to summarize research on neurocognitive outcomes in these conditions, advance understanding of how to best support these individuals throughout development, and facilitate future research.
Methods
We conducted a narrative review of literature on neurocognitive outcomes in CCHS and ROHHAD, supplemented with previously unpublished data from patients with CCHS and ROHHAD at our Center for Autonomic Medicine in Pediatrics (CAMP).
Results
Individuals with CCHS and ROHHAD experience a wide range of neurocognitive functioning ranging from above average to below average, but are at particular risk for difficulties with working memory, processing speed, perceptual reasoning, and visuographic skills. An assessment framework emphasizing fluid cognition seems especially appropriate for these conditions. Owing to small cohorts and varied methods of data collection, it has been difficult to identify associations between disease factors (including CCHS PHOX2B genotypes) and cognitive outcomes. However, results suggest that early childhood is a period of particular vulnerability, perhaps due to the disruptive impact of recurrent intermittent hypoxic episodes on brain and cognitive development.
Conclusion
Neurocognitive monitoring is recommended as a component of routine clinical care in CCHS and ROHHAD as a marker of disease status and to ensure that educational support and disability accommodations are provided as early as possible. Collaborative efforts will be essential to obtain samples needed to enhance our understanding of neurocognitive outcomes in CCHS and ROHHAD.
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Funding
This project was supported by the PHOX2B Patent Fund Chicago Community Trust Foundation and the National Institutes of Health National Center for Advancing Translational Sciences (NUCATS) Pilot and Voucher Grant. The authors have no financial relationships relevant to this article to disclose.
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Conceptualization: F.A.Z., R.Z.W., C.M.R., D.W.-M.; literature search: F.A.Z., R.Z.W., C.M.R., D.W.-M.; data collection/curation: F.A.Z., C.M.R., T.S., A.F.A., I.K., S.M.S., D.W.-M.; writing, original draft: F.A.Z., R.Z.W., C.M.R.; writing, review and editing: F.A.Z., R.Z.W., C.M.R., T.S., A.F.A., I.K., S.M.S., D.W.-M.; all authors read and approved the final manuscript.
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Data presented from the Center for Autonomic Medicine in Pediatrics were collected under research approved by the Internal Review Board of the Ann & Robert H. Lurie Children’s Hospital of Chicago (protocols 2013–15230, 2016–137, 2017–1399). Consent for participation was obtained from subjects age 18 years and older, and from parents of individuals under 18 years of age. Assent for participation was also obtained from individuals between 12 and 17 years of age.
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Zelko, F.A., Welbel, R.Z., Rand, C.M. et al. Neurocognition as a biomarker in the rare autonomic disorders of CCHS and ROHHAD. Clin Auton Res 33, 217–230 (2023). https://doi.org/10.1007/s10286-022-00901-1
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DOI: https://doi.org/10.1007/s10286-022-00901-1