Impact of Cocaine Use and Withdrawal on Sleep
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Multimodal Sleep and Biomarker Assessment.
- Who it may be relevant to
- Registry conditions: Cocaine Use Disorder. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- France
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Longitudinal Exploration of Subjective and Objective Sleep Characteristics in Patients With Cocaine Use Disorder During the Withdrawal Process
Overview
This study investigates how cocaine use and withdrawal affect sleep and circadian rhythms in individuals undergoing inpatient detoxification. Using wearable sleep monitors, actigraphy, questionnaires, and hormonal biomarkers, it aims to capture both objective and subjective changes in sleep across three key stages: active use, early withdrawal, and late withdrawal. The study is unique in its ability to explore sleep microstructure, the circadian system's role via melatonin and cortisol measurements, and the dynamic relationship between subjective sleep perception and objective sleep data. It also examines whether sleep quality may serve as a predictive marker of long-term withdrawal success.
Detailed description
Sleep disturbances are a common but poorly understood feature of cocaine use disorder, and may play a critical role in both relapse vulnerability and treatment outcomes. This interventional study aims to explore objective and subjective sleep patterns, as well as circadian regulation, across three distinct phases: during active cocaine use, early withdrawal, and late withdrawal. Participants will be individuals scheduled for supervised inpatient detoxification.
The study employs a multimodal assessment strategy:
* Ambulatory polysomnography using the Somfit® device will allow analysis of both macro- and microstructure of sleep across two nights per visit. * Actigraphy will be used to capture precise temporal dynamics of sleep-wake rhythm over the course of the study. * Subjective measures will include validated self-report questionnaires on sleep quality, insomnia severity, sleepiness, fatigue, and sleep perception. * Urinary biomarkers (free cortisol and 6-sulfatoxymelatonin, collected 5 times/day) will provide data on circadian rhythm integrity, enabling exploration of the role of circadian dysregulation in sleep disturbances.
A key originality of the study lies in its ability to dynamically assess the relationship between subjective and objective sleep parameters and to explore the circadian contribution to sleep disruption in cocaine users. Furthermore, by following patients through early and late withdrawal, the study will investigate whether sleep parameters could serve as predictive markers of long-term withdrawal success, offering potential targets for future therapeutic interventions.
Interventions
- Other Multimodal Sleep and Biomarker Assessment
Participants will undergo non-invasive sleep assessments including polysomnography recordings (using the Somfit® device), actigraphy, self-reported questionnaires (on sleep, substance use), and urinary biomarker collection (for cortisol and melatonin levels) at three distinct stages of their substance use/withdrawal timeline.
Primary outcome measures
- Sleep Efficiency (%) measured by polysomnography [Time frame: 30 months]
Secondary outcome measures (6)
- Objective Sleep Parameters measured by polysomnography [Time frame: 30 months]
- Sleep-Wake Rhythm Parameters from Actigraphy [Time frame: 30 months]
- Sleep-Wake Rhythm Parameters from Sleep Diary [Time frame: 30 months]
- Subjective Sleep Scores [Time frame: 30 months]
- Circadian Rhythmicity via Urinary Cortisol [Time frame: 30 months]
- Circadian Rhythmicity via Melatonin Metabolites [Time frame: 30 months]
Eligibility criteria
Inclusion criteria
- Male or female, aged 18 years or older
- Meeting DSM-5 criteria for cocaine use disorder
- Positive urine drug screen for cocaine
- Scheduled for inpatient supervised cocaine detoxification within the next four weeks
- Covered by a national health insurance plan or social security system
- Have a valid, personal means of contact (telephone or email address) enabling remote follow-up at 6 months.
Exclusion criteria
- Current diagnosis of opioid use disorder or other psychostimulant use disorders (e.g., amphetamines, methamphetamines, cathinones, methylphenidate)
- Unstable psychiatric disorder or somatic illness deemed incompatible with study participation by the investigator
- Current treatment with methylphenidate, modafinil, solriamfetol, melatonin, pitolisant, naltrexone, or bupropion
- Patients under legal guardianship
- Pregnant or breastfeeding women: a pregnancy test will be performed prior to inclusion for women of childbearing potential
- Individuals deprived of liberty by judicial or administrative decision
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Cohort
Study locations
France · 3 centers
- Centre Hospitalier Le Vinatier — Bron
- Centre Hospitalier Le Vinatier — Bron
- CH Le Vinatier — Bron
Identifiers
NCT: NCT07119567 · 2025-A00292-47