A Study Versus E2020 10mg Followed by an Open-label Extension Phase to Explore the Safety of E2020 SR 23 mg in Japanese Subjects With Severe Alzheimer's Type Dementia
A Randomized, Double Blind, Parallel-Group Comparison Study Versus E2020 10mg Followed by an Open-label Extension Phase to Explore the Safety of E2020 SR 23 mg in Japanese Subjects With Severe Alzheimer's Type Dementia
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Studietype
Studietype
Registrering (Faktiske)
Registrering
Fase
Fase
- Fase 2
Kontakter og plasseringer
Studiesteder
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Akita, Japan
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Fukuoka, Japan
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Saitama, Japan
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Fukuoka
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Kitakyushu, Fukuoka, Japan
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Gifu
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Mizunami, Gifu, Japan
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Kanagawa
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Yokosuka, Kanagawa, Japan
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Niigata
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Sanjo, Niigata, Japan
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Okayama
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Kurashiki, Okayama, Japan
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Shizuoka
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Fuji, Shizuoka, Japan
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Tokyo
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Hachioji, Tokyo, Japan
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Kodaira, Tokyo, Japan
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Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria
- Diagnostic evidence of probable Alzheimer's disease (AD) consistent with the Diagnostic and Statistical Manual for Mental Disorders-version IV (DSM-IV)
- Hachinski Ischemic Score
- Functional Assessment Staging (FAST) scale greater than or equal to 6 at Screening.
- Mini-Mental State Examination (MMSE) score of 1 to 12 at Screening
- Subjects who are on a stable Aricept- dose of 10 mg immediate release (IR), taken as a single, daily dose for 3 months prior to the Screening Visit
- Evidence consistent with Alzheimer's disease (AD) on any cranial image on magnetic resonance imaging (MRI) or computed tomography (CT) scan or etc. obtained within 24 months prior to the Screening Visit. Subjects who have any observations of dementia other than Alzheimer's type after the last image diagnosis should be reconfirmed.
- Age 50 years
- Written informed consent is to have been obtained from the subject (if possible) or from the subject's legal guardian or other representative
Exclusion Criteria
- Subjects with dementia other than Alzheimer's type
- Subjects with significant neurological or psychiatric disorders such as stroke, brain tumor, schizophrenia, epilepsy, normal pressure hydrocephalus, mental retardation, a history of head injury with loss of consciousness, or a history of brain surgery followed by persistent deficits
- Subjects with allergy to donepezil hydrochloride or piperidine derivatives
- Subjects with a cause of Alzheimer's disease (AD) which is supported by any laboratory tests such as Vitamin B12, folate levels, triiodothyronine, free triiodothyronine, thyroxine, thyroid stimulating hormone (TSH) or serologic test for syphilis
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
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Eksperimentell: 1
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Patients will take study medication orally, once daily, for 2 weeks according to a double-dummy design in the double blind phase: 23 mg donepezil sustained release (SR) concurrently with placebo identical in appearance to the 10 mg donepezil immediate release (IR) formulation
10 mg donepezil immediate release (IR) concurrently with placebo identical in appearance to the 23 mg donepezil sustained release (SR) formulation.
All patients who complete the double blind phase will take 23 mg donepezil sustained release (SR) orally, once daily, for 52 weeks in the Open-label Extension phase.
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Aktiv komparator: 2
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Patients will take study medication orally, once daily, for 2 weeks according to a double-dummy design in the double blind phase: 23 mg donepezil sustained release (SR) concurrently with placebo identical in appearance to the 10 mg donepezil immediate release (IR) formulation
10 mg donepezil immediate release (IR) concurrently with placebo identical in appearance to the 23 mg donepezil sustained release (SR) formulation.
All patients who complete the double blind phase will take 23 mg donepezil sustained release (SR) orally, once daily, for 52 weeks in the Open-label Extension phase.
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Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tidsramme |
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Maximum Observed Plasma Concentration (Cmax) of E2020 on Visits 2 and 3
Tidsramme: Visit 2 [Day1] and Visit 3 [Day 15]
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Visit 2 [Day1] and Visit 3 [Day 15]
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Cmax of E2020 on Visits 2 and 3 According to Cytochrome P450 2D6 (CYP2D6) Phenotype Status
Tidsramme: Visit 2 [Day1] and Visit 3 [Day 15]
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All subjects were identified as Extensive Metabolizer [EM] or Intermediate Metabolizer [IM] predicted from their CYP2D6 phenotypes.
Ultra-rapid Metabolizer (UM) and Poor Metabolizer (PM) were not identified in any subject.
Since the analysis population i
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Visit 2 [Day1] and Visit 3 [Day 15]
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Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Etterforskere
Etterforskere
- Studieleder: Naoki Kubota, Neuroscience Clinical Development Section. JAC PCU. Eisai Co., Ltd.
Studierekorddatoer
Studer hoveddatoer
Studiestart
Studiestart
Primær fullføring (Faktiske)
Primær fullføring
Studiet fullført (Faktiske)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
- Psykiske lidelser
- Hjernesykdommer
- Sykdommer i sentralnervesystemet
- Sykdommer i nervesystemet
- Nevrokognitive lidelser
- Nevrodegenerative sykdommer
- Tauopatier
- Demens
- Alzheimers sykdom
- Fysiologiske effekter av legemidler
- Nevrotransmittere agenter
- Molekylære mekanismer for farmakologisk virkning
- Kolinerge midler
- Enzymhemmere
- Nootropiske midler
- Kolinesterasehemmere
- Donepezil
Andre studie-ID-numre
Andre studie-ID-numre
- E2020-J081-221
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