Predictors (H1N1-vaccination, CSF hypocretin-1 deficiency severity (low [40-150 pg/mL]; undetectable [<40 pg/mL]), HLA-DQB1*06:02-positivity, narcolepsy core symptom severity) for sleep transitions were explored.<h4>Results</h4>NT1 patients had significantly higher all-stages and sleep-wake transition indices compared to siblings in epochs and mini-epochs. The gene discussed is HCRT; the disease is hyperinsulinemic hypoglycemia, familial, 4.