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Pediatric Obstructive Sleep ApneaNCT05368077

Brain Changes in Pediatric OSA

A study testing Adenotonsillectomy in people with Pediatric Obstructive Sleep Apnea, run by University of California, Los Angeles at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Obstructive sleep apnea (OSA) is highly prevalent in children and is often caused by overgrowth of the child's adenoids and/or tonsils. Consequently, adenotonsillectomy (removal of the tonsils and adenoids) is the most common treatment of OSA in children, although just the tonsils or adenoids may be removed depending… Read more about this study

Who is it for?
Ages 7 to 12 yearsHealthy volunteers can take part
Conditions the study is for
Pediatric Obstructive Sleep Apnea
What is being tested?
Adenotonsillectomy
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
56 participants
Where
1 siteUnited States
Study dates
14 May 2022to 31 Jul 2024
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 7 to 12 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • OSA
  • Pediatric OSA subjects will be in the age range 7-12 years (upper and lower age limit will be chosen to avoid developmental-related brain changes and potential requirement of anesthesia for brain MRI)
  • Have a diagnosis of at least moderate OSA (AHI>5 events/hour) via overnight polysomnography at a sleep laboratory
  • Without obesity (≥95th percentile BMI for age and sex) to avoid perioperative issues
  • No treatment for the breathing condition
  • Undergoing for adenotonsillectomy.
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  • Control subjects
  • Healthy children
  • Age-range from 7-12 years (within ±3 months)
  • Sex- and BMI-matched (±2 kg/m2) to pediatric OSA
  • No medications for brain disorders
  • Without any diagnosed neurological condition

Who cannot join

  • Previous history of diagnosed psychiatric diseases (depression and other brain disorders that may introduce brain injury)
  • Cystic fibrosis, concussion, and presence of space-occupying brain lesions
  • Metallic or electronic implants and other MRI-specific exclusion criteria

Trial locations and contacts

1 site in 1 country.

United States1 site
  • UCLA

    Los Angeles, California, 90095

Other trials in United States

About this study

Official title: Brain Changes in Pediatric Obstructive Sleep Apnea

Obstructive sleep apnea (OSA) is highly prevalent in children and is often caused by overgrowth of the child's adenoids and/or tonsils. Consequently, adenotonsillectomy (removal of the tonsils and adenoids) is the most common treatment of OSA in children, although just the tonsils or adenoids may be removed depending on the case. As well, OSA in children is often associated with cognitive dysfunction and mood issues, suggesting brain changes due to the condition. However, the link between brain changes, cognitive and moods issues, and OSA in children has not been thoroughly explored. Therefore, this study aims to examine brain changes, cognition and mood in pediatric OSA subjects compared to controls as well as before and after removal of the adenoids and/or tonsils. This study hopes to enroll 70 subjects, ages 7-12 years, 35 healthy controls and 35 subjects diagnosed with OSA and scheduled for an adenoidectomy and/or tonsillectomy. Control subjects will schedule one visit to UCLA and OSA subjects will schedule two. Upon the first visit, all subjects will undergo cognitive, mood and sleep questionnaires and MRI scanning. That will be the duration of the controls' participation in the study; however, OSA subjects will return 6 months later (after their adenoidectomy and/ or tonsillectomy) to repeat the same procedures. Sleep quality, mood, cognition and brain images will be compared between OSA and controls and between OSA subjects before surgery and after surgery.

Read the detailed description

Pediatric obstructive sleep apnea (OSA) is a common and progressive syndrome accompanied by severe cognition, mood, and daytime behavioral issues, as well as poor school performance, presumably stemming from compromised neural tissue, induced by intermittent hypoxia and perfusion changes. However, it is unclear whether the brain tissue injury is in acute or chronic condition, and whether myelin is preferentially affected than axons, an essential step to understand, since interventions for neural repair/recovery differ for acute vs chronic and myelin vs axonal injury. Also, it is unclear whether accompanying brain changes in pediatric OSA have functional consequences, resulting to cognitive or mood deficits. In addition, intermittent hypoxia triggers a cascade of injurious processes affecting endothelial cells, but unclear whether regional cerebral blood flow (CBF) is reduced in pediatric OSA. Treatment methods for pediatric OSA include tonsillectomy and/or adenoidectomy, and it is unclear whether brain tissue changes, regional CBF, and neural responses to cognitive challenge improve post-treatment. Using diffusion tensor imaging (DTI) and diffusion kurtosis imaging (DKI)-based procedures, acute and chronic tissue changes and axonal status and myelin integrity can be assessed. Regional brain CBF can be assessed by validated arterial spin labeling (ASL) imaging, and regional neural activity to cognitive challenge can be examined with blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (MRI). Thus, using 35 treatment-naïve, pediatric OSA and 35 control children, the specific aims are to; determine the nature and types of brain tissue injury, using DTI and DKI measures, in untreated pediatric OSA over healthy controls; identify regional brain CBF, using ASL imaging, and neural responses to cognitive challenge, using BOLD functional MRI in pediatric OSA over healthy children; assess cognitive (by the differential ability scale II and NEPSY II) and emotion functions (by the child behavior checklist) in pediatric OSA compared to control children, and examine relationships between brain injury and cognitive and emotion dysfunctions in pediatric OSA; and examine whether brain tissue changes, reduced CBF, and altered neural responses to cognitive challenge reverse, and cognition and mood signs improve after adenotonsillectomy at 6 months in pediatric OSA. In summary, the nature and types of brain injury, regional CBF changes, and neural responses to cognitive challenge, and whether brain tissue changes, altered CBF, and diminished neural responses, as well as mood and cognitive functions recover after adenotonsillectomy in pediatric OSA will be examined. Evaluation of pathological characteristics is essential to assess the mechanisms of damage, and to suggest intervention strategies before and after surgery. The findings will also help guide potential treatments to rescue/restore brain tissue (e.g., nonsteroidal anti-inflammatory drugs) and improve CBF that could be implemented to benefit cognitive and mood health, and improve academic performance in pediatric OSA.

Being tested
Adenotonsillectomy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AdenotonsillectomyProcedure or surgery

    Adenotonsillectomy is a standard surgical procedure for pediatric OSA treatment, which involves removal of hypertrophied tonsils and adenoids.

Study groups in NCT05368077
Study groupRoleWhat they receive
35 Pediatric Obstructive Sleep ApneaExperimentalThe investigators will also determine whether brain tissue changes, reduced CBF, and altered neural responses to cognitive challenge reverse, and cognition and mood signs improve after standard surgical procedure "adenotonsillectomy" for breathing condition at 6 months in pediatric OSA.
Receives: Procedure: Adenotonsillectomy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Brain tissue changes between baseline and after adenotonsillectomy.

    The investigators will examine whether brain tissue changes reverse after adenotonsillectomy in pediatric obstructive sleep apnea subjects. The investigators will use diffusion tensor imaging based mean diffusivity and diffusion kurtosis imaging based mean kurtosis measures to examine brain tissue changes; both procedures examine brain tissue integrity with mean diffusivity showing reduced and mean kurtosis indicating increased values in acute tissue changes, and with mean diffusivity showing increased and mean kurtosis showing reduced values in chronic tissue changes.

    Measured: 6 months

  2. Regional brain cerebral blood flow changes between baseline and after adenotonsillectomy.

    Using arterial spin labeling magnetic resonance imaging, the investigators will assess if regional cerebral blood flow improves after standard obstructive sleep apnea surgery in pediatric subjects. The cerebral blood flow values reduce with hypo-perfusion and increase with hyper-perfusion.

    Measured: 6 months

  3. Neural response changes before and after adenotonsillectomy.

    Using functional magnetic resonance imaging, the investigators will examine whether neural responses in brain cognitive control sites to arithmetic cognitive challenge will improve after adenotonsillectomy compared to baseline in pediatric obstructive sleep apnea subjects.

    Measured: 6 months

  4. Cognitive symptoms examination after adenotonsillectomy surgery.

    The investigators will examine cognitive symptom changes after adenotonsillectomy in pediatric obstructive sleep apnea subjects. The investigators will use the Differential Ability Scale II for cognition evaluation. The Differential Ability Scale II scores range from 30-170, with reduced values indicating impaired cognition (General Conceptual Ability score <90, abnormal; General Conceptual Ability score > 90-170, normal).

    Measured: 6 months

  5. Cognition assessment after adenotonsillectomy in pediatric obstructive sleep apnea patients.

    The investigators will assess cognition changes after adenotonsillectomy in pediatric obstructive sleep apnea subjects. The investigators will use the NEuroPSYchological Assessment II for cognition examination. The NEuroPSYchological Assessment II scores will be lower with impaired cognition (Scaled score <8, abnormal; Scaled score 8-19, normal).

    Measured: 6 months

  6. Mood changes after adenotonsillectomy surgery.

    The investigators will examine mood changes after adenotonsillectomy in pediatric obstructive sleep apnea subjects using the Child Behavior Checklist. The Child Behavior Checklist scores will be higher with mood symptoms in pediatric obstructive sleep apnea compared to control children (t-scores, 65-69 borderline; >70 clinical).

    Measured: 6 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 May 2022
  2. Study start14 May 2022
  3. Primary completion31 Jul 2023
  4. Study completion31 Jul 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
56 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05368077
Sponsor's protocol ID
IRB#21-000408
Status last verified
Nov 2024
First submitted
11 Apr 2022
Last updated
29 Nov 2024
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Once the findings have been published, the MRI data (devoid of individual identifiers) will be placed on a read-only anonymous file transfer protocol (ftp) server, with access in the conventional fashion by email ID. Investigators, who request access to the data, will e-mail us with an academic e-mail address and provide a description of their proposed project/purpose. Access to the data will be given to requesting investigator, as long as project does not require personal identifiable information. Such storage represents a substantial commitment of capacity, since the data are expected to require several terabytes. The MRI data (both pre- and post-surgery at 6 months), cognition and mood scores, and OSA disease severity from the same population will be especially valuable to the field, as it is rare to have from patients with pediatric OSA.

Publications

  • Barlow SE; Expert Committee. Expert committee recommendations regarding the prevention, assessment, and treatment of child and adolescent overweight and obesity: summary report. Pediatrics. 2007 Dec;120 Suppl 4:S164-92. doi: 10.1542/peds.2007-2329C.

    PubMed 18055651
  • Redline S, Amin R, Beebe D, Chervin RD, Garetz SL, Giordani B, Marcus CL, Moore RH, Rosen CL, Arens R, Gozal D, Katz ES, Mitchell RB, Muzumdar H, Taylor HG, Thomas N, Ellenberg S. The Childhood Adenotonsillectomy Trial (CHAT): rationale, design, and challenges of a randomized controlled trial evaluating a standard surgical procedure in a pediatric population. Sleep. 2011 Nov 1;34(11):1509-17. doi: 10.5665/sleep.1388.

    PubMed 22043122
  • Redline S, Tishler PV, Schluchter M, Aylor J, Clark K, Graham G. Risk factors for sleep-disordered breathing in children. Associations with obesity, race, and respiratory problems. Am J Respir Crit Care Med. 1999 May;159(5 Pt 1):1527-32. doi: 10.1164/ajrccm.159.5.9809079.

    PubMed 10228121
  • Rosen CL, Larkin EK, Kirchner HL, Emancipator JL, Bivins SF, Surovec SA, Martin RJ, Redline S. Prevalence and risk factors for sleep-disordered breathing in 8- to 11-year-old children: association with race and prematurity. J Pediatr. 2003 Apr;142(4):383-9. doi: 10.1067/mpd.2003.28.

    PubMed 12712055
  • Kumar R, Chavez AS, Macey PM, Woo MA, Yan-Go FL, Harper RM. Altered global and regional brain mean diffusivity in patients with obstructive sleep apnea. J Neurosci Res. 2012 Oct;90(10):2043-52. doi: 10.1002/jnr.23083. Epub 2012 Jun 20.

    PubMed 22715089
  • Kumar R, Pham TT, Macey PM, Woo MA, Yan-Go FL, Harper RM. Abnormal myelin and axonal integrity in recently diagnosed patients with obstructive sleep apnea. Sleep. 2014 Apr 1;37(4):723-32. doi: 10.5665/sleep.3578.

    PubMed 24899761
  • Tummala S, Palomares J, Kang DW, Park B, Woo MA, Harper RM, Kumar R. Global and Regional Brain Non-Gaussian Diffusion Changes in Newly Diagnosed Patients with Obstructive Sleep Apnea. Sleep. 2016 Jan 1;39(1):51-7. doi: 10.5665/sleep.5316.

    PubMed 26285005
  • Tummala S, Roy B, Vig R, Park B, Kang DW, Woo MA, Aysola R, Harper RM, Kumar R. Non-Gaussian Diffusion Imaging Shows Brain Myelin and Axonal Changes in Obstructive Sleep Apnea. J Comput Assist Tomogr. 2017 Mar/Apr;41(2):181-189. doi: 10.1097/RCT.0000000000000537.

    PubMed 27801694
  • Canessa N, Castronovo V, Cappa SF, Aloia MS, Marelli S, Falini A, Alemanno F, Ferini-Strambi L. Obstructive sleep apnea: brain structural changes and neurocognitive function before and after treatment. Am J Respir Crit Care Med. 2011 May 15;183(10):1419-26. doi: 10.1164/rccm.201005-0693OC. Epub 2010 Oct 29.

    PubMed 21037021
  • Castronovo V, Scifo P, Castellano A, Aloia MS, Iadanza A, Marelli S, Cappa SF, Strambi LF, Falini A. White matter integrity in obstructive sleep apnea before and after treatment. Sleep. 2014 Sep 1;37(9):1465-75. doi: 10.5665/sleep.3994.

    PubMed 25142557
  • Ehlert, L., Roy, B., Sahib, A., Song, X., Singh, S., Townsley, M., Kang, D.W., Aysola, R., Wen, E., Woo, M.A., Harper, R.M. & Kumar, R. Diffusion tensor imaging shows brain tissue changes before and after positive airway pressure treatment in patients with obstructive sleep apnea. Society for Neuroscience Annual Meeting, Washington, DC, USA, 2017.

  • Maresky HS, Shpirer I, Klar MM, Levitt M, Sasson E, Tal S. Continuous positive airway pressure alters brain microstructure and perfusion patterns in patients with obstructive sleep apnea. Sleep Med. 2019 May;57:61-69. doi: 10.1016/j.sleep.2018.12.027. Epub 2019 Jan 31.

    PubMed 30897457
  • Rosenzweig I, Glasser M, Crum WR, Kempton MJ, Milosevic M, McMillan A, Leschziner GD, Kumari V, Goadsby P, Simonds AK, Williams SC, Morrell MJ. Changes in Neurocognitive Architecture in Patients with Obstructive Sleep Apnea Treated with Continuous Positive Airway Pressure. EBioMedicine. 2016 May;7:221-9. doi: 10.1016/j.ebiom.2016.03.020. Epub 2016 Mar 25.

    PubMed 27322475
  • Sahib, A., Roy, B., Song, X., Singh, S., Aysola, R., Kang, D.W., Woo, M.A. & Kumar, R. Brain axonal and myelin changes after positive airway pressure treatment in patients with obstructive sleep apnea. Joint Annual Meeting International Society for Magnetic Resonance in Medicine, Paris, France, 2018.

  • Chen HL, Lin HC, Lu CH, Chen PC, Huang CC, Chou KH, Su MC, Friedman M, Chen YW, Lin WC. Systemic inflammation and alterations to cerebral blood flow in obstructive sleep apnea. J Sleep Res. 2017 Dec;26(6):789-798. doi: 10.1111/jsr.12553. Epub 2017 May 17.

    PubMed 28513057

Questions about this trial

What is this clinical trial studying?

A study testing Adenotonsillectomy in people with Pediatric Obstructive Sleep Apnea, run by University of California, Los Angeles at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 12 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 29 Nov 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Brain tissue changes between baseline and after adenotonsillectomy. (time frame: 6 months). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05368077, which also lists 160 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Nov 2024.

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