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Efficacy of Lemborexant in Insomnia Disorder Patients With and Without Comorbid Circadian Rhythm Sleep-Wake Disorders: A Dual-Cohort Study

Efficacy of Lemborexant in Insomnia Disorder Patients With and Without Comorbid Circadian Rhythm Sleep-Wake Disorders: A Dual-Cohort Study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2600125027
Enrollment
Unknown
Registered
2026-05-20
Start date
2026-05-26
Completion date
Unknown
Last updated
2026-05-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Insomnia disorders with and without circadian dysrhythmia

Interventions

Observation group 1(Insomnia Disorder Cohort without Circadian Rhythm Sleep-Wake Disorders):None
Observation group 2(Insomnia Disorder Cohort with Circadian Rhythm Sleep-Wake Disorders):None

Sponsors

Southern Medical University Southern Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Voluntarily sign the informed consent form; 2.Aged >=18 years, regardless of gender; 3.Meet the ICSD-3-TR diagnostic criteria for chronic insomnia disorder; 4.Baseline ISI score >= 8; 5.Patients requiring treatment with lemborexant and sleep hygiene education, as determined by the treating physician;

Exclusion criteria

Exclusion criteria: 1.Diagnosed and unresolved other sleep disorders, psychiatric disorders, or substance use disorders; 2.Presence of serious and unresolved physical (somatic) diseases; 3.Current use of sleep-wake affecting medications/treatments (e.g., hypnotics, CBT-I, sedative antidepressants, melatonin, stimulants) that cannot be discontinued; 4.PHQ-9 score >= 20 or GAD-7 score >= 15; 5.Subjects with suicide risk, suicidal ideation/behavior, or a history of suicide; 6.Shift workers, permanent night workers, or frequent transmeridian travelers (e.g., airline crew); 7.Contraindications to lemborexant per its package insert (e.g., narcolepsy, severe hepatic impairment, pregnant/breastfeeding/planning pregnancy women); 8.Unable to understand/comply with study instructions/protocol or complete online questionnaires (investigator’s judgment); 9.Other conditions deemed unsuitable by the investigator;

Design outcomes

Primary

MeasureTime frame
The proportion of subjects with an ISI score < 8 after 4 weeks of LEM treatment (i.e., the remission rate);

Secondary

MeasureTime frame
Changes from baseline in gut microbiota and inflammatory factors after 4 weeks of LEM treatment;Proportion of participants with improved circadian rhythm disturbance symptoms based on structured interview after 4 weeks of LEM treatment;Change from baseline in ISI scores for LEM at 5 mg and 10 mg doses;Change from baseline in sleep onset time, sleep efficiency (SE), sleep latency (SL), total sleep time (TST), and wake after sleep onset (WASO) after 4 weeks of LEM treatment;Change from baseline in GAD-7 scores after 4 weeks of LEM treatment;Change from baseline in ISI scores after 1, 2, and 4 weeks of LEM treatment;Change from baseline in ESS scores after 1, 2, and 4 weeks of LEM treatment;ISI response rate at Week 1, Week 2 and Week 4 of LEM treatment; response is defined as a =50% reduction in ISI score from baseline.;Change from baseline in ISI scores for LEM in patients aged 18–55 years and those over 55 years;Change from baseline in PHQ-9 scores after 4 weeks of LEM treatment;Change from baseline in Circadian Function Index, Relative Amplitude, Inter-daily Variability, Intra-daily Stability, and standard deviation of sleep duration and midpoint after 4 weeks of treatment;Between-cohort difference in the proportion of participants with ISI score < 8 after 4 weeks of LEM treatment;Change from baseline in BRIAN scores after 1, 2, and 4 weeks of LEM treatment;

Countries

China

Contacts

Public ContactBin Zhang

Southern Medical University Southern Hospital

zhang73bin@hotmail.com+86 20 62786319

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: May 30, 2026