NarcolepsyPROTECMANNCT03378453
Narcolepsy Protect Against Alzheimer's Disease?
A study testing PET-scan18F-AV-45 in people with Narcolepsy and Amyloid Pathology, run by University Hospital, Montpellier at 1 site in France.
Trial summary
Links between orexin and amyloid processes have been underlined recently. During the Alzheimer's process an upregulation of the orexin mechanism has been observed. The pathophysiological mechanism of narcolepsy type 1 is linked to orexin deficiency. Read more about this study
- Who is it for?
- Ages 65 to 85 years
- Conditions the study is for
- Narcolepsy, Amyloid Pathology
- What is being tested?
- PET-scan18F-AV-45
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 38 participants
- Where
- 1 siteFrance
- Study dates
- 7 Apr 2016to Nov 2017
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 65 to 85 years
- All sexes
- No healthy volunteers
- Older adult
Who may be able to join
- Narcolepsy group:
- Patients with narcolepsy type 1 older than 65 y.o. with orexin deficiency as required by international diagnosis criteria (ICSD3) with a follow-up in the national reference center for narcolepsy;
- Treated or not with psychostimulant drugs in relation to disease symptoms;
- Patients with CSF samples available or with scheduled lumbar puncture for diagnosis purpose;
- No contra-indications of the PET-scan18F-AV-45
- With a free and informed consent to participate to the study.
- Control group:
- Subjects already included in the MEMENTO-AMYging and/or MAPT-AV45 ancillary studies in the memory center with normal cognitive tests after neuropsychological assessments especially in the episodic memory tests and the brain amyloid PET-scan18F-AV-45 data with SuVr measurements.
Who cannot join
- Controls subjects or patients without free and informed consent to participate to the study
- No PET-scan18F-AV-45 data available
- No CSF samples
- Pathologies being life-threatening in a short term
- Patients deprived of freedom by court or administrative order
- Patients living in institution
- Major protected by the Law.
Trial locations and contacts
1 site in 1 country.
France1 site
Montpellier University Hospital, Gui de Chauliac
Montpellier, 34295
About this study
Official title: Narcolepsy Protect Against Alzheimer's Disease? Protective Role of Low Rates of Orexin on the Occurrence of Intracerebral Amyloid Deposits Characteristic of the Alzheimer's Disease: A Pilot Study
Links between orexin and amyloid processes have been underlined recently. During the Alzheimer's process an upregulation of the orexin mechanism has been observed. The pathophysiological mechanism of narcolepsy type 1 is linked to orexin deficiency. Thus, the investigators hypothesized that patients with narcolepsy may be protected from amyloid brain lesions, hallmarks of the Alzheimer's process. To test this hypothesis, the investigators analyzed the brain amyloid load measured by PET-scan amyloid brain imaging in patients with narcolepsy type 1 compared to controls without cognitive deficits.
Read the detailed description
The lack of innovative treatments in Alzheimer' disease (AD) is due to the non-understanding of the pathological process. The investigators need to include the latest concept of the sleep-wake/circadian kinetics of proteins in the brain, the new theory of the wash-out of pathological proteins via the brain glymphatic system during sleep and act at an early stage. New pathways are opened to better understand proteinopathies' processes and to propose new therapeutics interventions. The variations of the production/clearance curves of amyloid in the cerebrospinal fluid (CSF) during circadian rhythms and sleep-wake cycles have been demonstrated in in vivo metabolism experimentations. Suprachiasmatic nucleus damages due to AD may induce circadian regulation dysfunction and secondary sleep/wake cycle alterations. Key sleep/wake cycle neuromediators (Orexin-A, melatonin) are involved in the regulation of brain amyloid levels. The influence of orexin-A signaling on Aβ metabolism in animals and humans was recently highlighted. In rats, orexin-A release shows a 24-h fluctuation similar to that of brain interstitial fluid Aβ. In transgenic mice that overexpress amyloid precursor protein (APP), brain interstitial fluid Aβ concentration increases during wakefulness and after orexin-A infusion. Conversely, it decreases during sleep and after infusion of an orexin-A receptor antagonist6. In transgenic mice that overexpress APP/presenilin1 (PS1), in which the orexin gene is knocked out, a reduction of Aβ pathology was found, possibly caused by changes in sleep time. Orexin-A is linked to Aβ42 in AD and an increase of CSF orexin-A is observed in AD vs. controls, possibly related to sleep deterioration and neurodegeneration.
The narcolepy with cataplexy type 1 is the only disease with a specific orexin deficiency. Montpellier team have previously underlined in 15 patients with narcolepsy type 1 a normal level of Aβ42 in the CSF. The clinical expertise of the narcolepsy center suggested that the frequency of AD in old narcoleptic patients is low. The hypothesis was that patients with narcolepsy type 1 may be protected from amyloid brain lesions, hallmarks of the Alzheimer's process. The objective was to determine whether the brain amyloid load by PET-scan18 F-AV-45 measured with a semi-quantitative analysis (mean cortical SuVr) is lower in patients with narcolepsy type 1 older than 65 years-old than in cognitively normal age- and gender-matched controls.
- Conditions
- Narcolepsy, Amyloid Pathology
- Being tested
- PET-scan18F-AV-45
- Keywords
- Narcolepsy, Alzheimer, Orexin, Amyloid, PET-amyloid imaging
- Medical subject headings
- Narcolepsy, Alzheimer Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PET-scan18F-AV-45Device
The PET-scan18F-AV-45 is a PET-scan dedicated to analyze the amyloid load in the brain with the AV45 tracer by the measurement of the mean cortical SuVr
PET-scan18F-AV-45Device
PET-scan18F-AV-45 already done in another protocol MEMENTO-AMYging
| Study group | Role | What they receive |
|---|---|---|
| NarCo | Other | Narcolepsy type 1 over 65 years old Receives: Device: PET-scan18F-AV-45 |
| CoS | Other | Cognitevement healthy controls Receives: Device: PET-scan18F-AV-45 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean of cortical SuVr based of the PET-scan18F-AV-45 imaging
Mean of cortical SuVr based of the PET-scan18F-AV-45 imaging
Measured: Upon study completion, an average of one year
Secondary outcomes (11)
Mean regional SuVr with PET-scan AV45
Measured: Upon study completion, an average of one year
CSF Amyloid Aβ42
pg/ml
Measured: Upon study completion, an average of one year
CSF Amyloid Aβ40
pg/ml
Measured: Upon study completion, an average of one year
CSF Tau protein
pg/ml
Measured: Upon study completion, an average of one year
CSF Orexin concentration
pg/ml
Measured: Upon study completion, an average of one year
Night-time sleep duration
Hours/night
Measured: Upon study completion, an average of one year
Day-time sleep duration
Hours/day
Measured: Upon study completion, an average of one year
Cataplexy
Numbers/week
Measured: Upon study completion, an average of one year
Epworth sleepiness scale (ESS)
Score as a number
Measured: Upon study completion, an average of one year
Beck Depression Inventory (BDI)
Score as a number
Measured: Upon study completion, an average of one year
European Quality of Life Dimension (EQL-5)
Score as a number
Measured: Upon study completion, an average of one year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Dec 2017
- Study start7 Apr 2016
- Primary completionNov 2017
- Study completionNov 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (17)Papers the sponsor has linked to this study.
- Other trials for NarcolepsyStudies of the same condition, open and under way.
- More trials run by University Hospital, MontpellierThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 38 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital, Montpellier
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Audrey Gabelle, MD, PhD, Study chair, University Hospital, Montpellier
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03378453
- Sponsor's protocol ID
- 9636
- Acronym
- PROTECMAN
- Status last verified
- Dec 2017
- First submitted
- 2 Aug 2016
- Last updated
- 19 Dec 2017
- Results posted
- No
- Data monitoring committee
- Yes
- Individual data sharing
- Undecided
Publications
Bateman RJ, Munsell LY, Morris JC, Swarm R, Yarasheski KE, Holtzman DM. Human amyloid-beta synthesis and clearance rates as measured in cerebrospinal fluid in vivo. Nat Med. 2006 Jul;12(7):856-61. doi: 10.1038/nm1438. Epub 2006 Jun 25.
PubMed 16799555Bateman RJ, Wen G, Morris JC, Holtzman DM. Fluctuations of CSF amyloid-beta levels: implications for a diagnostic and therapeutic biomarker. Neurology. 2007 Feb 27;68(9):666-9. doi: 10.1212/01.wnl.0000256043.50901.e3.
PubMed 17325273Mawuenyega KG, Sigurdson W, Ovod V, Munsell L, Kasten T, Morris JC, Yarasheski KE, Bateman RJ. Decreased clearance of CNS beta-amyloid in Alzheimer's disease. Science. 2010 Dec 24;330(6012):1774. doi: 10.1126/science.1197623. Epub 2010 Dec 9.
PubMed 21148344Xie L, Kang H, Xu Q, Chen MJ, Liao Y, Thiyagarajan M, O'Donnell J, Christensen DJ, Nicholson C, Iliff JJ, Takano T, Deane R, Nedergaard M. Sleep drives metabolite clearance from the adult brain. Science. 2013 Oct 18;342(6156):373-7. doi: 10.1126/science.1241224.
PubMed 24136970Mendelsohn AR, Larrick JW. Sleep facilitates clearance of metabolites from the brain: glymphatic function in aging and neurodegenerative diseases. Rejuvenation Res. 2013 Dec;16(6):518-23. doi: 10.1089/rej.2013.1530.
PubMed 24199995Kang JE, Lim MM, Bateman RJ, Lee JJ, Smyth LP, Cirrito JR, Fujiki N, Nishino S, Holtzman DM. Amyloid-beta dynamics are regulated by orexin and the sleep-wake cycle. Science. 2009 Nov 13;326(5955):1005-7. doi: 10.1126/science.1180962. Epub 2009 Sep 24.
PubMed 19779148Coogan AN, Schutova B, Husung S, Furczyk K, Baune BT, Kropp P, Hassler F, Thome J. The circadian system in Alzheimer's disease: disturbances, mechanisms, and opportunities. Biol Psychiatry. 2013 Sep 1;74(5):333-9. doi: 10.1016/j.biopsych.2012.11.021. Epub 2012 Dec 28.
PubMed 23273723Wu YH, Zhou JN, Van Heerikhuize J, Jockers R, Swaab DF. Decreased MT1 melatonin receptor expression in the suprachiasmatic nucleus in aging and Alzheimer's disease. Neurobiol Aging. 2007 Aug;28(8):1239-47. doi: 10.1016/j.neurobiolaging.2006.06.002. Epub 2006 Jul 11.
PubMed 16837102Mirmiran M, Swaab DF, Kok JH, Hofman MA, Witting W, Van Gool WA. Circadian rhythms and the suprachiasmatic nucleus in perinatal development, aging and Alzheimer's disease. Prog Brain Res. 1992;93:151-62; discussion 162-3. doi: 10.1016/s0079-6123(08)64570-7.
PubMed 1480747Hoogendijk WJ, van Someren EJ, Mirmiran M, Hofman MA, Lucassen PJ, Zhou JN, Swaab DF. Circadian rhythm-related behavioral disturbances and structural hypothalamic changes in Alzheimer's disease. Int Psychogeriatr. 1996;8 Suppl 3:245-52; discussion 269-72. doi: 10.1017/s1041610297003426. No abstract available.
PubMed 9154571Dauvilliers YA, Lehmann S, Jaussent I, Gabelle A. Hypocretin and brain beta-amyloid peptide interactions in cognitive disorders and narcolepsy. Front Aging Neurosci. 2014 Jun 11;6:119. doi: 10.3389/fnagi.2014.00119. eCollection 2014.
PubMed 24966833Liguori C, Romigi A, Nuccetelli M, Zannino S, Sancesario G, Martorana A, Albanese M, Mercuri NB, Izzi F, Bernardini S, Nitti A, Sancesario GM, Sica F, Marciani MG, Placidi F. Orexinergic system dysregulation, sleep impairment, and cognitive decline in Alzheimer disease. JAMA Neurol. 2014 Dec;71(12):1498-505. doi: 10.1001/jamaneurol.2014.2510.
PubMed 25322206Slats D, Claassen JA, Verbeek MM, Overeem S. Reciprocal interactions between sleep, circadian rhythms and Alzheimer's disease: focus on the role of hypocretin and melatonin. Ageing Res Rev. 2013 Jan;12(1):188-200. doi: 10.1016/j.arr.2012.04.003. Epub 2012 Apr 30.
PubMed 22575905Yoshida Y, Fujiki N, Nakajima T, Ripley B, Matsumura H, Yoneda H, Mignot E, Nishino S. Fluctuation of extracellular hypocretin-1 (orexin A) levels in the rat in relation to the light-dark cycle and sleep-wake activities. Eur J Neurosci. 2001 Oct;14(7):1075-81. doi: 10.1046/j.0953-816x.2001.01725.x.
PubMed 11683899Roh JH, Jiang H, Finn MB, Stewart FR, Mahan TE, Cirrito JR, Heda A, Snider BJ, Li M, Yanagisawa M, de Lecea L, Holtzman DM. Potential role of orexin and sleep modulation in the pathogenesis of Alzheimer's disease. J Exp Med. 2014 Dec 15;211(13):2487-96. doi: 10.1084/jem.20141788. Epub 2014 Nov 24.
PubMed 25422493
Study at a glance
From the registry record, last updated by the sponsor on 19 Dec 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Narcolepsy Protect Against Alzheimer's Disease? Protective Role of Low Rates of Orexin on the Occurrence of Intracerebral Amyloid Deposits Characteristic of the Alzheimer's Disease: A Pilot Study
- ClinicalTrials.gov ID
- NCT03378453
- Acronym / sponsor ID
- PROTECMAN / 9636
- Conditions
- Narcolepsy, Amyloid Pathology
- Keywords
- Narcolepsy, Alzheimer, Orexin, Amyloid, PET-amyloid imaging
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 38 participants (actual)
- Lead sponsor
- University Hospital, MontpellierUniversity, hospital or other
- Study start
- 7 Apr 2016 (actual)
- Primary completion
- Nov 2017 (actual)
- Study completion
- Nov 2017 (actual)
- First posted
- 19 Dec 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Links between orexin and amyloid processes have been underlined recently. During the Alzheimer's process an upregulation of the orexin mechanism has been observed. The pathophysiological mechanism of narcolepsy type 1 is linked to orexin deficiency. Thus, the investigators hypothesized that patients with narcolepsy may be protected from amyloid brain lesions, hallmarks of the Alzheimer's process. To test this hypothesis, the investigators analyzed the brain amyloid load measured by PET-scan amyloid brain imaging in patients with narcolepsy type 1 compared to controls without cognitive deficits.
Detailed description
The lack of innovative treatments in Alzheimer' disease (AD) is due to the non-understanding of the pathological process. The investigators need to include the latest concept of the sleep-wake/circadian kinetics of proteins in the brain, the new theory of the wash-out of pathological proteins via the brain glymphatic system during sleep and act at an early stage. New pathways are opened to better understand proteinopathies' processes and to propose new therapeutics interventions. The variations of the production/clearance curves of amyloid in the cerebrospinal fluid (CSF) during circadian rhythms and sleep-wake cycles have been demonstrated in in vivo metabolism experimentations. Suprachiasmatic nucleus damages due to AD may induce circadian regulation dysfunction and secondary sleep/wake cycle alterations. Key sleep/wake cycle neuromediators (Orexin-A, melatonin) are involved in the regulation of brain amyloid levels. The influence of orexin-A signaling on Aβ metabolism in animals and humans was recently highlighted. In rats, orexin-A release shows a 24-h fluctuation similar to that of brain interstitial fluid Aβ. In transgenic mice that overexpress amyloid precursor protein (APP), brain interstitial fluid Aβ concentration increases during wakefulness and after orexin-A infusion. Conversely, it decreases during sleep and after infusion of an orexin-A receptor antagonist6. In transgenic mice that overexpress APP/presenilin1 (PS1), in which the orexin gene is knocked out, a reduction of Aβ pathology was found, possibly caused by changes in sleep time. Orexin-A is linked to Aβ42 in AD and an increase of CSF orexin-A is observed in AD vs. controls, possibly related to sleep deterioration and neurodegeneration.
The narcolepy with cataplexy type 1 is the only disease with a specific orexin deficiency. Montpellier team have previously underlined in 15 patients with narcolepsy type 1 a normal level of Aβ42 in the CSF. The clinical expertise of the narcolepsy center suggested that the frequency of AD in old narcoleptic patients is low. The hypothesis was that patients with narcolepsy type 1 may be protected from amyloid brain lesions, hallmarks of the Alzheimer's process. The objective was to determine whether the brain amyloid load by PET-scan18 F-AV-45 measured with a semi-quantitative analysis (mean cortical SuVr) is lower in patients with narcolepsy type 1 older than 65 years-old than in cognitively normal age- and gender-matched controls.
Study design
- Primary purpose
- Other
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| NarCo | Other | Device: PET-scan18F-AV-45Narcolepsy type 1 over 65 years old |
| CoS | Other | Device: PET-scan18F-AV-45Cognitevement healthy controls |
Who may qualify
- Ages
- 65 to 85 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Older adult
Key inclusion criteria (8 listed)
- Patients with narcolepsy type 1 older than 65 y.o. with orexin deficiency as required by international diagnosis criteria (ICSD3) with a follow-up in the national reference center for narcolepsy;
- Treated or not with psychostimulant drugs in relation to disease symptoms;
- Patients with CSF samples available or with scheduled lumbar puncture for diagnosis purpose;
- No contra-indications of the PET-scan18F-AV-45
- With a free and informed consent to participate to the study.
Key exclusion criteria (7 listed)
- Controls subjects or patients without free and informed consent to participate to the study
- No PET-scan18F-AV-45 data available
- No CSF samples
- Pathologies being life-threatening in a short term
- Patients deprived of freedom by court or administrative order
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PET-scan18F-AV-45The PET-scan18F-AV-45 is a PET-scan dedicated to analyze the amyloid load in the brain with the AV45 tracer by the measurement of the mean cortical SuVr | Device | NarCo |
| PET-scan18F-AV-45PET-scan18F-AV-45 already done in another protocol MEMENTO-AMYging | Device | CoS |
Primary outcome
Mean of cortical SuVr based of the PET-scan18F-AV-45 imaging
Time frame: Upon study completion, an average of one year
Mean of cortical SuVr based of the PET-scan18F-AV-45 imaging
11 secondary outcomes
Mean regional SuVr with PET-scan AV45
Time frame: Upon study completion, an average of one year
CSF Amyloid Aβ42
Time frame: Upon study completion, an average of one year
CSF Amyloid Aβ40
Time frame: Upon study completion, an average of one year
CSF Tau protein
Time frame: Upon study completion, an average of one year
CSF Orexin concentration
Time frame: Upon study completion, an average of one year
Night-time sleep duration
Time frame: Upon study completion, an average of one year
Day-time sleep duration
Time frame: Upon study completion, an average of one year
Cataplexy
Time frame: Upon study completion, an average of one year
Epworth sleepiness scale (ESS)
Time frame: Upon study completion, an average of one year
Beck Depression Inventory (BDI)
Time frame: Upon study completion, an average of one year
European Quality of Life Dimension (EQL-5)
Time frame: Upon study completion, an average of one year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Dec 2017.
- Background: PubMed 16799555Bateman RJ, Munsell LY, Morris JC, Swarm R, Yarasheski KE, Holtzman DM. Human amyloid-beta synthesis and clearance rates as measured in cerebrospinal fluid in vivo. Nat Med. 2006 Jul;12(7):856-61. doi: 10.1038/nm1438. Epub 2006 Jun 25.
- Background: PubMed 17325273Bateman RJ, Wen G, Morris JC, Holtzman DM. Fluctuations of CSF amyloid-beta levels: implications for a diagnostic and therapeutic biomarker. Neurology. 2007 Feb 27;68(9):666-9. doi: 10.1212/01.wnl.0000256043.50901.e3.
- Background: PubMed 21148344Mawuenyega KG, Sigurdson W, Ovod V, Munsell L, Kasten T, Morris JC, Yarasheski KE, Bateman RJ. Decreased clearance of CNS beta-amyloid in Alzheimer's disease. Science. 2010 Dec 24;330(6012):1774. doi: 10.1126/science.1197623. Epub 2010 Dec 9.
- Background: PubMed 24136970Xie L, Kang H, Xu Q, Chen MJ, Liao Y, Thiyagarajan M, O'Donnell J, Christensen DJ, Nicholson C, Iliff JJ, Takano T, Deane R, Nedergaard M. Sleep drives metabolite clearance from the adult brain. Science. 2013 Oct 18;342(6156):373-7. doi: 10.1126/science.1241224.
- Background: PubMed 24199995Mendelsohn AR, Larrick JW. Sleep facilitates clearance of metabolites from the brain: glymphatic function in aging and neurodegenerative diseases. Rejuvenation Res. 2013 Dec;16(6):518-23. doi: 10.1089/rej.2013.1530.
- Background: PubMed 19779148Kang JE, Lim MM, Bateman RJ, Lee JJ, Smyth LP, Cirrito JR, Fujiki N, Nishino S, Holtzman DM. Amyloid-beta dynamics are regulated by orexin and the sleep-wake cycle. Science. 2009 Nov 13;326(5955):1005-7. doi: 10.1126/science.1180962. Epub 2009 Sep 24.
- Background: PubMed 23273723Coogan AN, Schutova B, Husung S, Furczyk K, Baune BT, Kropp P, Hassler F, Thome J. The circadian system in Alzheimer's disease: disturbances, mechanisms, and opportunities. Biol Psychiatry. 2013 Sep 1;74(5):333-9. doi: 10.1016/j.biopsych.2012.11.021. Epub 2012 Dec 28.
- Background: PubMed 16837102Wu YH, Zhou JN, Van Heerikhuize J, Jockers R, Swaab DF. Decreased MT1 melatonin receptor expression in the suprachiasmatic nucleus in aging and Alzheimer's disease. Neurobiol Aging. 2007 Aug;28(8):1239-47. doi: 10.1016/j.neurobiolaging.2006.06.002. Epub 2006 Jul 11.
- Background: PubMed 1480747Mirmiran M, Swaab DF, Kok JH, Hofman MA, Witting W, Van Gool WA. Circadian rhythms and the suprachiasmatic nucleus in perinatal development, aging and Alzheimer's disease. Prog Brain Res. 1992;93:151-62; discussion 162-3. doi: 10.1016/s0079-6123(08)64570-7.
- Background: PubMed 9154571Hoogendijk WJ, van Someren EJ, Mirmiran M, Hofman MA, Lucassen PJ, Zhou JN, Swaab DF. Circadian rhythm-related behavioral disturbances and structural hypothalamic changes in Alzheimer's disease. Int Psychogeriatr. 1996;8 Suppl 3:245-52; discussion 269-72. doi: 10.1017/s1041610297003426. No abstract available.
- Background: PubMed 24966833Dauvilliers YA, Lehmann S, Jaussent I, Gabelle A. Hypocretin and brain beta-amyloid peptide interactions in cognitive disorders and narcolepsy. Front Aging Neurosci. 2014 Jun 11;6:119. doi: 10.3389/fnagi.2014.00119. eCollection 2014.
- Background: PubMed 25322206Liguori C, Romigi A, Nuccetelli M, Zannino S, Sancesario G, Martorana A, Albanese M, Mercuri NB, Izzi F, Bernardini S, Nitti A, Sancesario GM, Sica F, Marciani MG, Placidi F. Orexinergic system dysregulation, sleep impairment, and cognitive decline in Alzheimer disease. JAMA Neurol. 2014 Dec;71(12):1498-505. doi: 10.1001/jamaneurol.2014.2510.
- Individual participant dataSharing planned: Undecided
Related trials for Narcolepsy
RecruitingPhase 2/3
A Study of TAK-360 in People With Narcolepsy or Idiopathic Hypersomnia
Idiopathic Hypersomnia, Narcolepsy Type 1
RecruitingPhase 2/3
A Study to Investigate the Effects of Cleminorexton Compared With Placebo in the Treatment of Participants With Central Disorders of Hypersomnolence
Narcolepsy Type 1, Narcolepsy Type 2
Active, not recruitingObservational study
Epidemiology of Narcolepsy Type 1 and Type 2 in Spain
Narcolepsy Type 1, Narcolepsy Type 2
Active, not recruitingPhase 3
A Trial of TAK-861 for the Treatment of Narcolepsy With Cataplexy
Narcolepsy Type 1 (NT1), Narcolepsy With Cataplexy
Not yet recruitingObservational study
A Study About Treatment Use in Adults With Narcolepsy Type 1 (NT1) in Europe and Canada
Narcolepsy Type 1
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Audrey Gabelle, MD, PhD study chair
University Hospital, Montpellier
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing PET-scan18F-AV-45 in people with Narcolepsy and Amyloid Pathology, run by University Hospital, Montpellier at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Dec 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mean of cortical SuVr based of the PET-scan18F-AV-45 imaging (time frame: Upon study completion, an average of one year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03378453, which also lists 17 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Dec 2017.