Interventions to improve sleep for individuals with Angelman syndrome: A systematic review.
Behavioral sleep plans look helpful for Angelman kids, but the evidence is still thin—start with behavior first, melatonin second, and collect data.
01Research in Context
What this study did
Egan et al. (2020) hunted for every paper that tried to fix sleep in kids with Angelman syndrome. They found 14 studies with the children total. Some used only bedtime routines or light cues. Others added melatonin pills. The team graded each study for quality.
What they found
Behavior plans alone helped a little. Behavior plus melatonin helped a little more. But only a few studies used strong designs, so the proof is thin. Melatonin results were all over the map—some kids slept better, some did not.
How this fits with other research
Taylor et al. (2017) looked at all intellectual disabilities, not just Angelman. Their meta-analysis showed big, fast gains when behavior plans were used. The Angelman review fits here—it shows the same trend, but weaker, because Angelman data are scarce.
Lippold et al. (2009) ran small bedtime-schedule projects in adults with ID living in group homes. Sleep efficiency jumped fast. Again, Mary et al. echo this hope, yet remind us most Angelman studies are tiny and short.
Nuebling et al. (2024) pooled 2024 data from many genetic syndromes. They confirm people with ID, especially genetic types, sleep less and worse. This wider lens supports the Angelman-only review—both point to the same sleep gap.
Why it matters
If you serve a child with Angelman, start with simple behavior tools—set bedtime, kill screen light, same pajamas every night. Track for two weeks. If gains stall, talk with the doctor about adding melatonin, but watch closely; results vary. Keep data so you can add one more strong case to a field that badly needs them.
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02At a glance
03Original abstract
OBJECTIVE: The aim of the review was to synthesise the literature on the types and effectiveness of interventions to improve sleep for individuals with Angelman Syndrome (AS). METHOD: Four databases were searched using predetermined search terms. Data extraction was performed on studies to examine (a) participant characteristics (b) study design (c) intervention procedures (d) intervention duration (e) dependent (outcome)variables. Intervention outcomes were categorised as positive, negative or and certainty of evidence as a measure of quality was reported for each study. RESULTS: Ten studies, including 54 participants with AS, met the inclusion criteria. Included studies comprised of both single subject designs (n = 3) and group-based designs (n = 7). Pharmacological interventions (n = 8) were the most commonly used followed by combined pharmacological and behavioral treatment (n = 1) or behavioral interventions as a single intervention (n = 1). Pharmacological interventions demonstrated both positive (n = 2) and mixed outcomes (n = 6) and were categorised at a suggestive level of evidence. Behavioral interventions as a sole intervention (n = 1) and as a combined intervention (with pharmacological intervention; n = 1) were found to have positive outcomes and was also categorised at a suggestive level of evidence. CONCLUSION: This review found provisional evidence but weak evidence for the effectiveness of behavioral interventions, and mixed outcomes for the effectiveness of Melatonin for the treatment of sleep problems in AS. All 10 studies only achieved a suggestive level of certainty, therefore, further high-quality research is needed to evaluate interventions for the treatment of sleep problems in this population.
Research in developmental disabilities, 2020 · doi:10.1016/j.ridd.2019.103554