Health and sleep problems in Cornelia de Lange Syndrome: a case control study.
Cornelia de Lange syndrome piles on more medical problems but not more sleep problems than matched ID peers.
01Research in Context
What this study did
Doctors compared people with Cornelia de Lange syndrome to people with other intellectual disabilities. They asked parents about past and current health and sleep problems.
Each CdLS person was matched to someone with ID of the same age and ability level. This design lets us see if CdLS adds extra medical risk beyond general ID.
What they found
The CdLS group had more ear, eye, gut, skin and heart problems across the lifespan. Surprisingly, both groups had the same amount of sleep trouble.
In short, CdLS brings extra medical burden, but sleep issues look like regular ID.
How this fits with other research
Moss et al. (2009) built on these data one year later. They kept the CdLS focus but added behavior and parenting stress. Their wider lens shows the same kids also have high behavior variability and stressed caregivers.
Three ID sleep studies seem to clash with the "no extra sleep problems" result. Einfeld et al. (1996), Webb et al. (1999) and Staddon et al. (2002) all link severe sleep disturbance to more daytime challenging behavior in mixed-ID samples. The difference is those studies did not match for syndrome type. When CdLS is compared only with ID peers of equal severity, sleep rates level out.
Lee et al. (2020) and Tassé et al. (2013) looked at Down syndrome instead of CdLS. They also split groups by sleep status and found poorer brain and executive outcomes for the sleep-disturbed subset. Together the pattern is clear: within any single syndrome, sleep matters, but CdLS itself does not add extra sleep risk beyond ID.
Why it matters
If you serve a client with CdLS, schedule extra screenings for eyes, ears, reflux and skin. Do not assume they will sleep worse than other ID clients; still assess sleep as usual. Use the same sleep interventions you would for any child with ID and behavior concerns.
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02At a glance
03Original abstract
BACKGROUND: Self-injury, sleep problems and health problems are commonly reported in Cornelia de Lange Syndrome (CdLS) but there are no comparisons with appropriately matched participants. The relationship between these areas and comparison to a control group is warranted. METHOD: 54 individuals with CdLS were compared with 46 participants with intellectual disability (ID) of mixed aetiology who were similar in terms of degree of ID, mobility, age and gender using informant-based measures of health problems, sleep and self-injury. RESULTS: Participants with CdLS experienced significantly more current and lifetime health problems with eye problems and gastrointestinal disorders prominent. Although 55% of those with CdLS experienced sleep problems this prevalence was not different from the comparison group. Sleep disorder was not associated with self-injury in the CdLS group, skin problems were associated with severity of self-injury but not presence. DISCUSSION: People with CdLS experience a range of significant health problems and have more health concerns than others with the same degree of ID. Although this has been well documented in the past, the current high prevalence of health concerns indicates the need for regular health assessment and appropriate intervention.
Journal of intellectual disability research : JIDR, 2008 · doi:10.1111/j.1365-2788.2008.01047.x