- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT04026958
Klaritromycinmekanismer vid hypersomnisyndrom
Antibiotikamedierade förbättringar i vaksamhet: verkningsmekanismer för klaritromycin vid hypersomnisyndrom
Studieöversikt
Status
Intervention / Behandling
Detaljerad beskrivning
Överdriven sömnighet under dagtid och långa sömntider är vanliga egenskaper hos många neurologiska störningar, inklusive myotonisk dystrofi, Parkinsons sjukdom och hypersomnisyndrom i centrala nervsystemet. Dessa senare syndrom är en grupp av störningar med överlappande kliniska fenotyper och, förutom vid narkolepsi på grund av hypokretinbrist (narkolepsi typ 1), potentiellt delad patofysiologi.
Patologisk sömnighet under dagtid vid dessa störningar försämrar arbetsprestationer, begränsar livskvaliteten och mer än fördubblar risken för motorfordon och andra olyckor. Eftersom den bakomliggande orsaken till majoriteten av dessa hypersomnisyndrom inte är känd, är behandlingar inriktade på att öka monoaminerg signalering involverad i vaknande främjande. Ändå kan åtminstone en fjärdedel av patienterna med hypersomnisyndrom inte uppnå tillfredsställande kontroll av symtomen med dessa behandlingar och funktionshinder eller sjukskrivningar är ofta nödvändiga. Det finns ett tydligt behov av nya behandlingar för överdriven sömnighet under dagtid för att lösa detta misslyckande med den nuvarande vårdstandarden.
I tidigare studier resulterade klaritromycin i signifikanta, kliniskt meningsfulla förbättringar av svårighetsgraden av sömnighet, sömnighetsrelaterade begränsningar i förlängda aktiviteter i det dagliga livet och sömnighetsrelaterad livskvalitet. Lång sömntid och sömntröghet, båda underordnade symtom på hypersomnisjukdomar som bidrar till funktionsnedsättningar, förbättrades också med klaritromycin.
Hypotes: Klaritromycin kommer att minska överdriven sömnighet och andra symtom på hypersomnisjukdomar, mätt genom självrapportering och objektiva tester.
Syfte 1: Att identifiera centrala nervsystemets mediatorer av klaritromycins förmåga att främja vakenhet och minska sömnighet, bland patienter med centrala hypersomnisyndrom.
Hypotes 1a: Förändringar i cerebrospinalvätska (CSF) förstärkning av gamma-aminosmörsyra-A (GABA-A) receptorfunktion in vitro kommer att associeras med förbättringar i självrapporterad och objektivt uppmätt sömnighet.
Hypotes 1b: Förändringar i funktionell anslutning kommer att associeras med förbättringar i självrapporterad och objektivt uppmätt sömnighet.
Syfte 2: Att undersöka extraneuronala mekanismer genom vilka klaritromycin kan minska sömnighet, inklusive förändringar i systemisk inflammation och förändringar i gastrointestinal mikrobiota, hos patienter med centrala hypersomnisyndrom.
Hypotes 2a: Förbättring av sömnighet vid användning av klaritromycin kommer att vara positivt associerad med minskningar av systemisk inflammation, särskilt minskningar av nivåer av tumörnekrosfaktor-alfa (TNFα).
Hypotes 2b: Förbättring av sömnighet vid användning av klaritromycin kommer att vara positivt korrelerad med modulering av gastrointestinal dysbios.
Studietyp
Inskrivning (Faktisk)
Fas
- Fas 2
Kontakter och platser
Studieorter
-
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Georgia
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Atlanta, Georgia, Förenta staterna, 30329
- Emory Sleep Center
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Beskrivning
Inklusionskriterier:
- diagnos av idiopatisk hypersomni eller narkolepsi typ 2
- ålder 18-60
- fri från väckningsfrämjande medicin, sömnig trots nuvarande väckningsfrämjande mediciner, eller villig att avbryta nuvarande väckningsfrämjande medicin i minst 5 halveringstider innan baslinjeåtgärder
- fria från pre- eller probiotikatillskott i minst sex månader före baslinjeåtgärder
Exklusions kriterier:
- andra potentiella orsaker till hypersomnolens, inklusive måttlig eller svår sömnapné, allvarlig periodisk rörelsestörning i armar och ben med upphetsning, okontrollerade metabola störningar, hypokretinbrist eller kataplexi
- kontraindikation för klaritromycin
- kontraindikation för någon av studieprocedurerna
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Grundläggande vetenskap
- Tilldelning: Randomiserad
- Interventionsmodell: Parallellt uppdrag
- Maskning: Dubbel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
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Experimentell: Klaritromycin
Deltagarna i denna studiegrupp kommer att få klaritromycin i 14 dagar.
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Klaritromycin kommer att doseras som 500 mg två gånger dagligen, en gång vid uppvaknande och en gång med lunch, under 14 dagar.
Andra namn:
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Placebo-jämförare: Placebo
Deltagarna i denna studiearm kommer att få placebo för att matcha klaritromycin under 14 dagar.
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En placebo för att matcha klaritromycin kommer att doseras som 500 mg två gånger dagligen, en gång vid uppvaknande och en gång med lunch, under 14 dagar.
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Change in Epworth Sleepiness Scale (ESS) Score
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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)
Tidsram: 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
Tidsram: 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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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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On-Treatment Sleep Duration
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: 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)
Tidsram: Day -1, Day 14
|
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)
Tidsram: 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
Tidsram: 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)
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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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Samarbetspartners och utredare
Sponsor
Samarbetspartners
Utredare
- Huvudutredare: Lynn Marie Trotti, MD, MSc, Emory University
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- IRB00108681
- 1R01NS111280 (U.S.S. NIH-anslag/kontrakt)
- 2025P011204 (Annan identifierare: Emory IRB)
Plan för individuella deltagardata (IPD)
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IPD-planbeskrivning
Tidsram för IPD-delning
Kriterier för IPD Sharing Access
IPD-delning som stöder informationstyp
- STUDY_PROTOCOL
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