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- Ensayo clínico NCT04026958
Mecanismos de claritromicina en síndromes de hipersomnia
Mejoras en la vigilancia mediadas por antibióticos: mecanismos de acción de la claritromicina en los síndromes de hipersomnia
Descripción general del estudio
Estado
Intervención / Tratamiento
Descripción detallada
La somnolencia diurna excesiva y la duración prolongada del sueño son características comunes de muchos trastornos neurológicos, incluida la distrofia miotónica, la enfermedad de Parkinson y los síndromes de hipersomnia del sistema nervioso central. Estos últimos síndromes son un grupo de trastornos con fenotipos clínicos superpuestos y, excepto en el caso de la narcolepsia por deficiencia de hipocretina (narcolepsia tipo 1), fisiopatología potencialmente compartida.
La somnolencia diurna patológica en estos trastornos afecta el desempeño ocupacional, limita la calidad de vida y más que duplica el riesgo de accidentes automovilísticos y de otro tipo. Debido a que se desconoce la causa subyacente de la mayoría de estos síndromes de hipersomnia, los tratamientos tienen como objetivo aumentar la señalización monoaminérgica involucrada en la promoción de la vigilia. Sin embargo, al menos una cuarta parte de los pacientes con síndromes de hipersomnia no pueden lograr un control satisfactorio de los síntomas con estos tratamientos y, a menudo, se necesitan incapacidades o licencias médicas. Existe una clara necesidad de tratamientos novedosos para la somnolencia diurna excesiva para resolver esta falla del estándar de atención actual.
En estudios anteriores, la claritromicina produjo mejoras importantes y clínicamente significativas en la gravedad de la somnolencia, las limitaciones relacionadas con la somnolencia en las actividades prolongadas de la vida diaria y la calidad de vida relacionada con la somnolencia. La duración prolongada del sueño y la inercia del sueño, ambos síntomas secundarios de los trastornos de hipersomnia que contribuyen a las deficiencias funcionales, también mejoraron con la claritromicina.
Hipótesis: la claritromicina reducirá la somnolencia excesiva y otros síntomas de los trastornos de hipersomnia, según lo medido por autoinforme y pruebas objetivas.
Objetivo 1: Identificar los mediadores del sistema nervioso central de la capacidad de la claritromicina para promover la vigilia y reducir la somnolencia en pacientes con síndromes de hipersomnia central.
Hipótesis 1a: Los cambios en la mejora de la función del receptor del ácido gamma-aminobutírico-A (GABA-A) en el líquido cefalorraquídeo (LCR) in vitro se asociarán con mejoras en la somnolencia autoinformada y medida objetivamente.
Hipótesis 1b: Los cambios en la conectividad funcional se asociarán con mejoras en la somnolencia autoinformada y medida objetivamente.
Objetivo 2: investigar los mecanismos extraneuronales mediante los cuales la claritromicina puede reducir la somnolencia, incluidos cambios en la inflamación sistémica y cambios en la composición de la microbiota gastrointestinal, en pacientes con síndromes de hipersomnia central.
Hipótesis 2a: La mejora en la somnolencia con el uso de claritromicina se asociará positivamente con reducciones en la inflamación sistémica, especialmente reducciones en los niveles del factor de necrosis tumoral alfa (TNFα).
Hipótesis 2b: La mejora de la somnolencia con el uso de claritromicina se correlacionará positivamente con la modulación de la disbiosis gastrointestinal.
Tipo de estudio
Inscripción (Actual)
Fase
- Fase 2
Contactos y Ubicaciones
Ubicaciones de estudio
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Georgia
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Atlanta, Georgia, Estados Unidos, 30329
- Emory Sleep Center
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Descripción
Criterios de inclusión:
- diagnóstico de hipersomnia idiopática o narcolepsia tipo 2
- edad 18-60
- libre de medicación que promueva la vigilia, soñoliento a pesar de la medicación actual que promueva la vigilia, o dispuesto a descontinuar la medicación actual que promueva la vigilia durante al menos 5 vidas medias antes de las medidas de referencia
- libre de suplementos prebióticos o probióticos durante al menos seis meses antes de las medidas de referencia
Criterio de exclusión:
- otras causas potenciales de hipersomnolencia, que incluyen apnea del sueño moderada o grave, trastorno grave del movimiento periódico de las extremidades con despertares, trastornos metabólicos no controlados, deficiencia de hipocretina o cataplejía
- contraindicación de la claritromicina
- contraindicación para cualquiera de los procedimientos del estudio
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Ciencia básica
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Doble
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: Claritromicina
Los participantes en este brazo de estudio recibirán claritromicina durante 14 días.
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La claritromicina se dosificará en dosis de 500 mg dos veces al día, una vez al despertar y otra con el almuerzo, durante 14 días.
Otros nombres:
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Comparador de placebos: Placebo
Los participantes en este brazo de estudio recibirán un placebo para igualar la claritromicina durante 14 días.
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Se administrará un placebo para igualar la claritromicina en dosis de 500 mg dos veces al día, una vez al despertar y otra con el almuerzo, durante 14 días.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Change in Epworth Sleepiness Scale (ESS) Score
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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)
Periodo de tiempo: 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
Periodo de tiempo: 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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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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On-Treatment Sleep Duration
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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)
Periodo de tiempo: 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
Periodo de tiempo: 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)
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Lynn Marie Trotti, MD, MSc, Emory University
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- IRB00108681
- 1R01NS111280 (Subvención/contrato del NIH de EE. UU.)
- 2025P011204 (Otro identificador: Emory IRB)
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Descripción del plan IPD
Marco de tiempo para compartir IPD
Criterios de acceso compartido de IPD
Tipo de información de apoyo para compartir IPD
- PROTOCOLO DE ESTUDIO
Información sobre medicamentos y dispositivos, documentos del estudio
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