Exploration of differences in types of sleep disturbance and severity of sleep problems between individuals with Cri du Chat syndrome, Down's syndrome, and Jacobsen syndrome: a case control study.

The team compared sleep problems across three genetic syndromes: Cri du Chat, Down, and Jacobsen. They used a case-control design to see which sleep issues showed up most and how bad they were in each group.

Parents filled out sleep questionnaires. The study did not test any treatment; it simply mapped the sleep landscape for these syndromes.

Snoring was the number-one sleep complaint in all three groups. Severity of sleep problems did not differ between syndromes—snoring ruled across the board.

No syndrome had uniquely worse sleep; the main takeaway is to check for snoring first no matter which label the client carries.

Hanson et al. (2013) extends these findings to older adults with intellectual disability. They used wrist-watch actigraphy and found 72% had at least one measurable sleep problem, showing sleep trouble persists across the lifespan.

Bódizs et al. (2014) looked at Williams syndrome and saw sleep quality drop faster with age. Their method matches Griffith et al. (2012)—both profile sleep across single genetic syndromes—yet Williams adds the twist that age matters, something the 2012 paper did not test.

Masi et al. (2022) studied autistic children and linked worse sleep to lower adaptive skills and sensory issues. Together with Griffith et al. (2012), this builds a cross-syndrome picture: snoring is common, but in autism sensory factors may worsen sleep further.

When a client with Down, Cri du Chat, or Jacobsen syndrome shows daytime fatigue or behavior spikes, start with one quick question: ‘Do they snore?’ If yes, refer for sleep evaluation. No need to assume one syndrome sleeps worse; treat the symptom, not the label.