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- Essai clinique NCT04026958
Mécanismes de la clarithromycine dans les syndromes d'hypersomnie
Améliorations de la vigilance médiées par les antibiotiques : mécanismes d'action de la clarithromycine dans les syndromes d'hypersomnie
Aperçu de l'étude
Statut
Intervention / Traitement
Description détaillée
Une somnolence diurne excessive et de longues durées de sommeil sont des caractéristiques communes à de nombreux troubles neurologiques, notamment la dystrophie myotonique, la maladie de Parkinson et les syndromes d'hypersomnie du système nerveux central. Ces derniers syndromes sont un groupe de troubles aux phénotypes cliniques imbriqués et, sauf en cas de narcolepsie par déficit en hypocrétine (narcolepsie de type 1), à physiopathologie potentiellement commune.
La somnolence diurne pathologique dans ces troubles altère les performances professionnelles, limite la qualité de vie et fait plus que doubler le risque d'accident de la route et d'autres accidents. Étant donné que la cause sous-jacente de la majorité de ces syndromes d'hypersomnie n'est pas connue, les traitements visent à augmenter la signalisation monoaminergique impliquée dans la promotion de l'éveil. Pourtant, au moins un quart des patients atteints de syndromes d'hypersomnie ne parviennent pas à contrôler de manière satisfaisante leurs symptômes avec ces traitements et des congés d'invalidité ou médicaux sont souvent nécessaires. Il existe un besoin évident de nouveaux traitements pour la somnolence diurne excessive afin de résoudre cet échec de la norme de soins actuelle.
Dans des études antérieures, la clarithromycine a entraîné des améliorations significatives et cliniquement significatives de la sévérité de la somnolence, des limitations liées à la somnolence dans les activités prolongées de la vie quotidienne et de la qualité de vie liée à la somnolence. Les longues durées de sommeil et l'inertie du sommeil, deux symptômes auxiliaires des troubles de l'hypersomnie qui contribuent aux troubles fonctionnels, ont également été améliorés avec la clarithromycine.
Hypothèse : La clarithromycine réduira la somnolence excessive et d'autres symptômes des troubles de l'hypersomnie, tels que mesurés par l'auto-évaluation et les tests objectifs.
Objectif 1 : Identifier les médiateurs du système nerveux central de la capacité de la clarithromycine à favoriser l'éveil et à réduire la somnolence chez les patients atteints de syndromes d'hypersomnie centrale.
Hypothèse 1a : Les modifications de l'amélioration de la fonction du récepteur de l'acide gamma-aminobutyrique A (GABA-A) in vitro dans le liquide céphalo-rachidien (LCR) seront associées à des améliorations de la somnolence autodéclarée et objectivement mesurée.
Hypothèse 1b : Les modifications de la connectivité fonctionnelle seront associées à des améliorations de la somnolence autodéclarée et objectivement mesurée.
Objectif 2 : Sonder les mécanismes extra-neuronaux par lesquels la clarithromycine peut réduire la somnolence, y compris les modifications de l'inflammation systémique et les modifications de la composition du microbiote gastro-intestinal, chez les patients atteints de syndromes d'hypersomnie centrale.
Hypothèse 2a : L'amélioration de la somnolence avec l'utilisation de la clarithromycine sera positivement associée à des réductions de l'inflammation systémique, en particulier des réductions des niveaux de facteur de nécrose tumorale alpha (TNFα).
Hypothèse 2b : L'amélioration de la somnolence avec l'utilisation de la clarithromycine sera positivement corrélée à la modulation de la dysbiose gastro-intestinale.
Type d'étude
Inscription (Réel)
Phase
- Phase 2
Contacts et emplacements
Lieux d'étude
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Georgia
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Atlanta, Georgia, États-Unis, 30329
- Emory Sleep Center
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
La description
Critère d'intégration:
- diagnostic d'hypersomnie idiopathique ou de narcolepsie de type 2
- 18-60 ans
- sans médicaments favorisant l'éveil, somnolent malgré les médicaments favorisant l'éveil actuels, ou disposé à interrompre les médicaments favorisant l'éveil actuels pendant au moins 5 demi-vies avant les mesures de base
- sans suppléments pré- ou probiotiques pendant au moins six mois avant les mesures de base
Critère d'exclusion:
- autres causes potentielles d'hypersomnolence, y compris l'apnée du sommeil modérée ou sévère, les troubles périodiques graves des mouvements des membres avec réveils, les troubles métaboliques incontrôlés, le déficit en hypocrétine ou la cataplexie
- contre-indication à la clarithromycine
- contre-indication à l'une des procédures d'étude
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Science basique
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Double
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
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Expérimental: Clarithromycine
Les participants à ce groupe d'étude recevront de la clarithromycine pendant 14 jours.
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La clarithromycine sera dosée à 500 mg deux fois par jour, une fois au réveil et une fois au déjeuner, pendant 14 jours.
Autres noms:
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Comparateur placebo: Placebo
Les participants à ce bras d'étude recevront un placebo correspondant à la clarithromycine pendant 14 jours.
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Un placebo correspondant à la clarithromycine sera dosé à 500 mg deux fois par jour, une fois au réveil et une fois au déjeuner, pendant 14 jours.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Change in Epworth Sleepiness Scale (ESS) Score
Délai: Day -1, Day 14
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The Epworth Sleepiness Scale asks participants to respond to 8 scenarios with how likely they are to fall asleep on a 4-point scale where 0 = "would never doze" and 3 = "high chance of dozing".
Total scores range from 0 to 24 where higher scores indicate a higher chance of falling asleep during daytime activities.
The change in ESS score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 mean that the mean score at Day 14 was lower than the mean score at Baseline, indicating less sleepiness.
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Day -1, Day 14
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Change in Maintenance of Wakefulness Test (MWT) for Sleep Latency
Délai: Day -1, Day 14
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The MWT polysomnographic procedure for sleep latency examines how well participants stay awake during several trials where participants relax in a quiet room for 40 minutes.
One study found the mean sleep latency among persons without a sleep disorder to be 35.2
minutes.
The change from baseline is calculated as baseline sleep latency minus sleep latency at Day 14, in minutes.
Positive values result when the duration of sleep latency at Day 14 is lower than at Baseline.
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Day -1, Day 14
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Change in Gamma-aminobutyric Acid Receptor A (GABA-A) Potentiation
Délai: Day -1, Day 14
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Cerebrospinal fluid (CSF) is drawn to determine the change in levels of GABA-A potentiation between the study arms.
The difference between measured current with GABA alone and the current measured with GABA + CSF yields a measure of potentiation for each CSF sample in each condition.
The change from baseline is calculated as the baseline value minus the value at Day 14.
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Day -1, Day 14
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Change in Default Mode Network (DMN) Connectivity
Délai: Day -2, Day 13
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The default mode network (DMN) consists of a group of highly correlated brain regions most active during quiet rest, while the task positive network (TPN) is the brain network activated for goal-directed tasks.
DMN connectivity changes with sleep states and it is increasingly implicated in the symptomatology of sleepiness.
During resting state, sleep deprived participants demonstrate reduced static connectivity with the DMN.
Changes in DMN between the Baseline 1 (Day - 2) and Day 13 visits are compared between treatment groups, particularly using quasi-periodic patterns (QPPs), which interrogate network-level connectivity on a dynamic scale.
Preservation of the temporal dimension provides more insight into how this spatiotemporal network propagates across condition and pathology.
The DMN/TPN QPP correlation is reported.
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Day -2, Day 13
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Change in Tumor Necrosis Factor - Alpha (TNF-α)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of TNF-α between the study arms.
TNF-α is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
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Day -1, Day 14
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Change in Gastrointestinal Microbiome Composition
Délai: Day -1, Day 14
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Changes in microbiome composition, as measured by alpha diversity using the Shannon Index, via 16S ribosomal ribonucleic acid (rRNA) sequencing results are compared between study arms.
The Shannon Index measures both abundance and evenness of microbial species, values of 0 indicate that a community has only one species.
The higher the value the higher the diversity of species in a particular community.
Change from baseline is calculated by subtracting the Day 14 value from the value at Baseline.
Numbers greater than 0 indicate that the Day 14 Shannon index value is lower than at Baseline.
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Day -1, Day 14
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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On-Treatment Sleep Duration
Délai: Day 1 through Day 14
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Participants log when they go to bed and when they wake up in order to calculate the number of minutes spent sleeping.
The average duration of sleep across 14 days is compared between study arms.
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Day 1 through Day 14
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Change in Fatigue Severity Scale (FSS) Score
Délai: Day -1, Day 14
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Fatigue severity is measured with the Fatigue Severity Scale (FSS).
The FSS is a 9-item instrument where responses are on a scale of 1 to 7 where 1 = "disagree" and 7 = "agree".
Total scores range from 9 to 63 where higher scores indicate greater fatigue.
The change in FSS score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating decreased fatigue.
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Day -1, Day 14
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Change in Multidimensional Fatigue Inventory (MFI-20) Score
Délai: Day -1, Day 14
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The MFI-20 is a 20-item instrument assessing fatigue severity.
Responses are on a 5-point scale where 1 = "yes, that is true" and 5 = "no, that is not true".
Positively phrased items are reverse scored so that the total score ranges from 20 to 100 where higher scores indicate greater severity of fatigue.
The change in MFI-20 score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating decreased fatigue.
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Day -1, Day 14
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Change in Sleep Inertia Questionnaire (SIQ) Score
Délai: Day -1, Day 14
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The SIQ is an instrument with 21 items with responses on a 5-point scale where 1 = "not at all" and 5 = "all the time".
Two additional questions relate to how much time it takes for the respondent to wake up in the morning.
Total scores range from 21 to 105 and higher scores indicate increased difficulty from tiredness.
The change in SIQ score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating reduced difficulty awakening.
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Day -1, Day 14
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On-Treatment Sleep Inertia Likert Scale
Délai: Day 1 through Day 14
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Sleep inertia is measured with a single item on a 10-point Likert scale asking participants how difficult it was for them to wake up in the morning, where 1 = "not difficult at all" and 10 = "very difficult".
The average scores across 14 days are compared between study arms.
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Day 1 through Day 14
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Change in Interleukin 1 Alpha (IL-1α)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-1α between the study arms.
IL-1α is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-1α is obtained by subtracting the IL-1α level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 1 Beta (IL-1β)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-1β between the study arms.
IL-1β is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-1β is obtained by subtracting the IL-1β level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 2 (IL-2)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-2 between the study arms.
IL-2 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-2 is obtained by subtracting the IL-2 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin 6 (IL-6)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-6 between the study arms.
IL-6 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-6 is obtained by subtracting the IL-6 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-8)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-8 between the study arms.
IL-8 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-8 is obtained by subtracting the IL-8 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-15)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-15 between the study arms.
IL-15 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-15 is obtained by subtracting the IL-15 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interleukin (IL-18)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of IL-18 between the study arms.
IL-18 is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in IL-18 is obtained by subtracting the IL-18 level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Tumor Necrosis Factor Beta (TNF-β)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of TNF-β between the study arms.
TNF-β is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in TNF-β is obtained by subtracting the TNF-β level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Interferon Alpha (INF-α2a)
Délai: Day -1, Day 14
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Blood samples are used to determine the change in levels of INF-α2a between the study arms.
INF-α2a is a soporific cytokine and a reduction in soporific cytokines is hypothesized to reduce daytime sleepiness.
The change in INF-α2a is obtained by subtracting the INF-α2a level at Day 14 from the Baseline level.
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Day -1, Day 14
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Change in Functional Outcomes of Sleep Questionnaire (FOSQ) Score
Délai: Day -1, Day 14
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The FOSQ is a 30-item instrument assessing how sleepiness impacts daily activities.
There are five subscales assessing General Productivity, Activity Level, Vigilance, Social Outcomes, and Intimate and Sexual Relationships.
Items are scored on a 4-point scale where 1 = extreme difficulty and 4 = no difficulty.
Subscale scores are obtained by calculating the mean score for the items in that subscale and each can range from 1 to 4, where higher scores indicate less difficulty due to sleepiness.
A total score is obtained by calculating the means of the subscale scores and multiplying that by the number of subscales with a score.
The total score ranges from 5 to 20 and higher scores indicate less difficulty from sleepiness.
The change in FOSQ score is obtained by subtracting the total score at Day 14 from the Baseline score.
Scores below 0 signify that the mean score at Day 14 was higher than the mean score at Baseline, indicating reduced difficulty from sleepiness.
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Day -1, Day 14
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Change in Hypersomnia Severity Index (HSI)
Délai: Day -1, Day 14
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The HSI is a 9-item instrument assessing the severity of excessive sleepiness (hypersomnolence).
Items are scored on a Likert scale where 0 = not at all and 4 = very much.
Total scores range from 0 to 36 and higher scores indicate greater severity of symptoms of hypersomnia.
The change from baseline is calculated as the baseline score minus the score at Day 14.
The change in HSI score is obtained by subtracting the total score at Day 14 from the baseline score.
Scores above 0 signify that the mean score at Day 14 was lower than the mean score at Baseline, indicating reduced severity of hypersomnia symptoms.
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Day -1, Day 14
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Change in MRI Functional Connectivity
Délai: Day -2, Day 13
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For functional connectivity analyses, each functional scan is parceled into the 246 regions of interest (ROIs), spanning Yeo's 7 networks contained in the Brainnetome Atlas and mean timecourse is calculated for each group.
Pearson correlations between each pair of ROIs are calculated, to determine the strength of functional connectivity between each pair of regions and inter/intra-network.
This yields a functional connectivity matrix for each functional scan (at both a subject- and group-level).
These correlation matrices are Fischer z-transformed and averaged across each condition to create a mean functional connectivity matrix for each condition.
Here, the average default mode network (DMN) connectivity is reported.
Z-scores have a mean of 0 and scores higher than 0 indicate increased functional connectivity.
The change from Baseline is calculated by subtracting the Day 13 score from the score at Day -2.
Values lower than 0 mean that the Day 13 score was higher than at baseline.
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Day -2, Day 13
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Change in MRI Task Performance - N-Back Accuracy
Délai: Day -2, Day 13
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Participants complete a working memory task during functional magnetic resonance imaging (fMRI).
The change in task performance is measured as accuracy during 3 different levels of back tasks (0-back, 1-back, and 2-back), from baseline to on-treatment (Day 13).
The 0-back test has participants respond to a prespecified stimulus and is a control condition.
The 1-back involves remembering and responding to a prior stimulus, while a stimulus two trials earlier is responded to with the 2-back.
The change in the percentage of correct responses is obtained by subtracting the percentage at Day 14 from the Baseline percentage.
Values below 0 signify that the mean percent accuracy at Day 14 was higher than the mean percent accuracy at Baseline, indicating increased accuracy.
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Day -2, Day 13
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Change in MRI Task Performance - N-Back Reaction Time
Délai: Day -2, Day 13
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Participants complete a working memory task during functional magnetic resonance imaging (fMRI).
he change in task performance is measured as reaction time during 3 different levels of back tasks (0-back, 1-back, and 2-back), from baseline to on-treatment (Day 13).
The 0-back test has participants respond to a prespecified stimulus and is a control condition.
The 1-back involves remembering and responding to a prior stimulus, while a stimulus two trials earlier is responded to with the 2-back.
The change in the reaction time of responses is obtained by subtracting the time at Day 14 from the Baseline time.
Scores above 0 signify that the mean time at Day 14 was lower than the mean time at Baseline, indicating faster reaction time.
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Day -2, Day 13
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Lynn Marie Trotti, MD, MSc, Emory University
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- IRB00108681
- 1R01NS111280 (Subvention/contrat des NIH des États-Unis)
- 2025P011204 (Autre identifiant: Emory IRB)
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Description du régime IPD
Délai de partage IPD
Critères d'accès au partage IPD
Type d'informations de prise en charge du partage d'IPD
- PROTOCOLE D'ÉTUDE
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