- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT03461276
Sikkerhed og immunogenicitet af gentagne doser af ABvac40 hos patienter med a-MCI eller Vm-AD
En multicenter, randomiseret, dobbeltblind, placebokontrolleret, 24 måneders undersøgelse i patienter med amnestisk mild kognitiv svækkelse eller meget mild Alzheimers sygdom for at undersøge sikkerheden, tolerabiliteten og immunresponsen af gentagne subkutane injektioner af ABvac40
Alzheimers sygdom (AD) er den mest almindelige form for demens og tegner sig for 50-75 % af de anslåede 47 millioner mennesker med demens på verdensplan. Amyloid-kaskadehypotesen for AD foreslår, at amyloid-β (Aβ)-peptidakkumulering i hjernen, forårsaget af en ubalance mellem Aβ-produktion og clearance, er den initierende faktor for en kaskade, der i sidste ende fører til demens.
Aβ-peptider genereres fra sekventiel spaltning af amyloid-precursorproteinet (APP), herunder Aβ40 og Aβ42. Aβ40 er den dominerende variant (90 %) blandt de udskilte Aβ-former, og selvom Aβ42 er mere hydrofob og tilbøjelig til at aggregere, og Aβ42-oligomerer anses for at være de mest neurotoksiske arter, kan Aβ40 også producere meget toksiske diffusible aggregater, som kan forhindres in vitro af specifikke anti-Aβ40-antistoffer.
Adskillige undersøgelser har foreslået, at en høj koncentration af Aβ40 i hjernen adskiller patienter med AD fra dem, der har senile plaques, men er kognitivt normale, hvilket peger på vigtigheden af Aβ40 i starten af demens. I overensstemmelse med dette har tidligere undersøgelser vist, at specifikke anti-Aβ40-antistoffer mærker NFT'er i den entorhinale cortex og hippocampus af AD-hjerner, og at disse ikke co-lokaliseres med tau NFT'er, hvilket tyder på tilstedeværelsen af degenererende neuronale populationer fyldt med C -terminale fragmenter af Aβx-40. Derudover er Aβ40 hovedkomponenten i amyloidaflejring omkring cerebrale arterier, der forårsager cerebral amyloid angiopati (CAA), som har en prævalens på omkring 80-90% hos patienter med AD (for mere information se Lacosta et al. Alzheimers Research & Therapy (2018) 10:12 DOI 10.1186/s13195-018-0340-8).
I betragtning af de tidligere resultater, der tyder på, at strategier rettet mod Aβ40 kunne repræsentere nye sygdomsmodificerende terapier, har vi udviklet ABvac40, den første aktive vaccine rettet mod den C-terminale ende af Aβ40-peptidet.
Formålet med dette fase II-studie er at bekræfte hos patienter med a-MCI eller vm-AD niveauet af sikkerhed og tolerabilitet opnået i ABvac40 fase I kliniske forsøg med patienter med mm-AD. Derudover er undersøgelsen rettet mod bedre at karakterisere immunresponset fremkaldt af ABvac40 og at udforske dets virkninger på AD-biomarkører.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Fase 2
Kontakter og lokationer
Studiesteder
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Montpellier, Frankrig, 34295
- CHU de Montpellier
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Toulouse, Frankrig, 31059
- Centre de Recherche Clinique du Gérontopôle
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Bourgogne-Franche-Comté
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Dijon, Bourgogne-Franche-Comté, Frankrig, 21000
- Hôpital François Mitterrand
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Brescia, Italien, 25125
- San Giovanni di Dio - Fatebenefratelli
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Alicante
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Alicante, Alicante, Spanien, 03010
- Hospital General Universitario de Alicante
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Barcelona
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Barcelona, Barcelona, Spanien, 08025
- Hospital De La Santa Creu I Sant Pau
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Barcelona, Barcelona, Spanien
- Hospital del Mar
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Barcelona, Barcelona, Spanien, 08035
- Hospital Vall d'Hebron
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Barcelona, Barcelona, Spanien, 08005
- Barcelona Beta Brain Research Center (BBRC)
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Barcelona, Barcelona, Spanien, 08028
- Fundacio ACE
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Terrassa, Barcelona, Spanien, 08221
- Hospital Mutua De Terrasa
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Burgos
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Burgos, Burgos, Spanien, 09006
- Hospital U. de Burgos
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Guipuzcoa
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Donostia / San Sebastian, Guipuzcoa, Spanien, 20014
- Hospital Universitario Donosti
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La Rioja
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Logroño, La Rioja, Spanien, 26006
- Hospital San Pedro
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Lleida
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Lleida, Lleida, Spanien, 25198
- Hospital Santa Maria de Lleida
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Madrid
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Colmenar Viejo, Madrid, Spanien, 28034
- Hospital Ramon y Cajal
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Madrid, Madrid, Spanien, 28040
- Hospital Clínico San Carlos
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Madrid, Madrid, Spanien, 28006
- Complejo Hospitalario Ruber Juan Bravo
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Madrid, Madrid, Spanien, 28010
- Hospital Universitario 12 Octubre
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Navarre
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Pamplona, Navarre, Spanien, 31008
- CUN - Clínica Universidad de Navarra
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Vizcaya
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Algorta, Vizcaya, Spanien, 48993
- CAE Oroitu
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Zaragoza
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Zaragoza, Zaragoza, Spanien, 50009
- Hospital Clinico Universitario Lozano Blesa
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Stockholm, Sverige, 141 86
- Karolinska Universitetssjukhuset
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
Et emne skal opfylde alle følgende inklusionskriterier:
- Mand eller kvinde mellem 55 og 80 år, begge inklusive, på tidspunktet for underskrivelse af informeret samtykke.
- Patienten (eller juridisk repræsentant, hvis det er relevant) og en nærtstående/plejer skal læse emneinformationsarket, acceptere at deltage i det kliniske forsøg og underskrive samtykkeerklæringen (patienten og en nærtstående/plejer).
- Tilstedeværelse af en stabil omsorgsperson til at deltage i patientens studiebesøg.
- Mini-Mental Status Examination (MMSE) scorer mellem 24 og 30 point (inklusive), alt efter alder og uddannelsesniveau.
- Clinical Dementia Rating (CDR) skala med 0,5.
- Gentageligt batteri til vurdering af neuropsykologisk status (RBANS)-score på Delayed Memory Index (DMI) på 85 eller lavere.
- Resultaterne af patientens MR-hjerneskanning skal være i overensstemmelse med diagnosen klinisk a-MCI eller vm-AD efter følgende kriterier: Scheltens skala og måling af hvid substans og tidligere blødninger.
- Hvis patienten er i behandling for AD, skal have været stabil i de to måneder før selektionsbesøget.
- Behandling for samtidige sygdomme skal være stabil i den foregående måned før behandlingen af undersøgelsen.
- Positiv vurdering af kandidaten af investigator for at overholde kravene og procedurerne for undersøgelsen.
Ekskluderingskriterier:
Et forsøgsperson, der opfylder et af følgende eksklusionskriterier, er IKKE berettiget til deltagelse i undersøgelsen.
- Kendt allergi over for komponenter i vaccinen eller tidligere anafylaksi, en alvorlig allergisk reaktion eller en historie med overfølsomhed over for en hvilken som helst komponent i formuleringen. Allergi over for fisk eller skaldyr.
- Aktiv infektionssygdom (dvs. hepatitis B, C). Positiv syfilis serologi.
- Anamnese eller tilstedeværelse af autoimmun sygdom, undtagen mild eksem, rhinitis eller psoriasis.
- Tilstedeværelse eller historie med immundefekt (dvs. HIV).
- Betydelig nyre- og/eller leversygdom.
- Anamnese med astma eller reaktiv luftvejssygdom med bronkospasme inden for de sidste 6 måneder eller i øjeblikket i regelmæssig behandling.
- Større ukontrolleret systemisk tilstand (f. diabetes, kongestiv hjertesvigt, hypertension).
- Anamnese med kræft (≤5 år siden sidste specifikke behandling). Undtagelser: basocellulært karcinom.
- Betydelige ændringer i hæmatologiske, biokemiske eller urinanalytiske parametre, især dem, der vedrører niveauer af vitamin B12, folinsyre eller skjoldbruskkirtelprøver.
- Anamnese med enhver anden lidelse i centralnervesystemet, degenerativ eller ikke-degenerativ neurologisk eller psykiatrisk tilstand, som efter efterforskerens mening kunne være årsagen til demensen, eller kunne forklare den kognitive svækkelse, eller som kan forstyrre den kognitive funktion direkte eller ved dens behandling.
- Geriatrisk depressionsskala (GDS; forkortet version), score >5
- Har et "ja" svar til C-SSRS selvmordstanker punkt 4 eller 5, eller enhver selvmordsadfærd inden for 6 måneder før screening, eller har været indlagt eller behandlet for selvmordsadfærd inden for de sidste 5 år før screening.
- Anamnese eller tegn på cerebrovaskulær sygdom (iskæmisk eller hæmoragisk slagtilfælde, forbigående iskæmisk anfald) eller diagnose af mulig, sandsynlig eller klar vaskulær demens i henhold til NINDS-AIREN kriterier.
- Tilstedeværelse på MR af et relevant mønster af mikrovaskulær sygdom (Leukoaraiosis, Fazekas score ≥2 i den dybe hvide substans skala eller ≥4 i den globale score) eller mere end et lakunært eller territorialt infarkt. Enhver anden MR-konstatering, der efter investigatorens mening kan være en relevant medvirkende årsag til forsøgspersonens kognitive svækkelse. Tilstedeværelse af op til 3 mikroblødninger vil være acceptabel.
- Anamnese med blødningsforstyrrelser eller disponerende tilstande, blodpropper eller klinisk signifikante unormale resultater på koagulationsprofilen ved screening, som bestemt af investigator.
- Patienter, der behandles med antikoagulantia eller antiaggregerende terapi (aspirin i en profylaktisk dosis ≤ 325 mg dagligt eller clopidogrel i en dosis ≤75 mg dagligt er tilladt) bør ikke rekrutteres i undersøgelsen.
- Modificeret Hachinski iskæmisk skala, score højere end 4.
- Kirurgi (med generel anæstesi) inden for de foregående tre måneder for at blive inkluderet i forsøget eller programmeret i løbet af undersøgelsesperioden.
- Behandling inden for 30 dage før besøg 0 med systemiske kortikosteroider eller andre immunsuppressive midler.
- Vaccination mod influenza eller enhver anden vaccination inden for 2 måneder før første IMP-dosis.
- Patienter, som tidligere er blevet randomiseret i dette forsøg.
- Deltagelse i et andet klinisk forsøg inden for den foregående 1 måned til screeningsbesøget eller inden for de foregående 12 måneder efter den sidste dosis til screeningsbesøget i tilfælde af forsøgspersoner, der deltog i forsøg med et studielægemiddel, hvis hensigt var at ændre progressionen AD, medmindre dokumentation for modtagelse af placebo er tilgængelig. Patienten kan ikke indgå i undersøgelsen, hvis det eksperimentelle lægemiddel var et immunterapeutisk lægemiddel, herunder IVIG eller en vaccine mod Alzheimers sygdom, medmindre der foreligger dokumentation for modtagelse af placebo.
- Patienter med alkohol- eller stofmisbrug eller afhængighed.
- Absolutte (har en pacemaker eller implanterbar defibrillator) eller relative (barmetalstent eller stent implanteret inden for de sidste seks måneder) kontraindikationer til MR-undersøgelse. Følelse af klaustrofobisk lad ikke udføre MR eller PET-scanning.
- Patienter, der sandsynligvis ikke vil overholde protokollen (f.eks. ude af stand til at vende tilbage til opfølgningsbesøg).
- Kvinder i den fødedygtige alder, gravide eller ammende.
- Væsentlige ændringer i EKG, der er forbundet med en øget risiko for patienten.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Tredobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: ABvac40
Seks administrationer af ABvac40; de første fem administreret en gang hver 4. uge og den sjette i uge 42.
Hver administration består af 1 ml subkutan injektion af ABvac40.
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ABVAC40 består i et konjugat af AβX-40 med et bærerprotein (KLH) køretøj i phosphatbuffer indeholdende 0,35% aluminiumshydroxid som adjuvans.
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Placebo komparator: Placebo
Seks administrationer af placebo; de første fem administreret en gang hver 4. uge og den sjette i uge 42.
Hver administration består af 1 ml subkutan injektion af vaccinens vehikelbuffer uden den aktive komponent.
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Placebo består i vaccinens køretøj (phosphatbuffer indeholdende 0,35% aluminiumshydroxid) uden konjugatet.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Gennemsnitlig maksimal forøgelse af anti-Aβ40 antistofssignal (optisk densitet [OD] i ELISA)
Tidsramme: Del A (baseline og post-baseline besøg i uge 2A, uge 6A, uge 10A, uge 14A, uge 18A, uge 24A, uge 40A, uge 44A, uge 50A, uge 77A og uge 104A)
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Gennemsnitlig maksimal stigning (Mδ) af plasma-anti-Aβ40-antistof-signal (optisk densitet [OD] i ELISA) i hvert individ med hensyn til baselinebesøg.
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Del A (baseline og post-baseline besøg i uge 2A, uge 6A, uge 10A, uge 14A, uge 18A, uge 24A, uge 40A, uge 44A, uge 50A, uge 77A og uge 104A)
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Emneopgang på grund af TEAE'er
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal tilbagetrukne personer på grund af bivirkninger af behandlingsfremstilling (TEAE'er) under hele undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal personer med klinisk signifikante abnormiteter i fysisk undersøgelse
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Klinisk signifikante (CS) abnormiteter i fysisk undersøgelse rapporteret under undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal personer med klinisk signifikante abnormiteter i neurologisk undersøgelse
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Klinisk signifikante (CS) abnormiteter i neurologisk undersøgelse rapporteret under undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal personer med klinisk signifikante abnormiteter i analytisk hæmatologi
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Klinisk signifikante (CS) abnormiteter i hæmatologiparametre rapporteret under undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal personer med klinisk signifikante abnormiteter i analytisk biokemi
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Klinisk signifikante (CS) abnormiteter i biokemi -parametre rapporteret under undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Antal personer med klinisk signifikante abnormiteter i koagulation
Tidsramme: Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Klinisk signifikante (CS) abnormiteter i koagulationsparametre rapporteret under undersøgelsen.
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Hele studievarighed (uge 0 til uge 104 i del A og uge 0 til uge 77 i del B)
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Columbia Suicide Severity Rating Scale
Tidsramme: Del A (uge 24a, uge 50a, uge 77a og uge 104a)
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Emner med selvmordstanker eller selvmordsadfærd siden sidste besøg.
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Del A (uge 24a, uge 50a, uge 77a og uge 104a)
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Level of Anti-Aβ40 Antibodies in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of anti-Aβ40 antibodies in cerebrospinal fluid (CSF) from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included the recorded outcome value as the dependent variable; treatment, protocol specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of Anti-Aβ40 Antibodies in Plasma
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of anti-Aβ40 antibodies in plasma from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included the recorded outcome value as the dependent variable; treatment, protocol specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline age as covariates; and measures within-patient at each visit as a repeated measure. A compound symmetric variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Level of Antibody-secreting Cells
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of antibody-secreting cells from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included the recorded outcome value as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Level of Aβ40 Peptides in Plasma - ABtest-IA
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of anti-Aβ40 peptides in plasma (ABtest-IA) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Level of Aβ42 Peptides in Plasma - ABtest-IA
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of anti-Aβ42 peptides in plasma (ABtest-IA) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Level of Aβ40 Peptides in Plasma - ABtest-MS
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of anti-Aβ40 peptides in plasma (ABtest-MS) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. A compound symmetric variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Level of Aβ42 Peptides in Plasma - ABtest-MS
Tidsramme: Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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The change in levels of anti-Aβ42 peptides in plasma (ABtest-MS) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 2A, Week 6A, Week 10A, Week 14A, Week 18A, Week 24A, Week 40A, Week 44A, Week 50A, Week 77A, and Week 104A)
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Cortical Fibrillary Amyloid Deposition Assessed by a-PET Scans
Tidsramme: Part A (Week 50A and Week 104A)
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The change in amyloid-PET (a-PET) standard centiloid global cortical area (reference Pons) from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Percentage of Change in Brain Volume
Tidsramme: Part A (Week 24A, Week 50A, and Week 104A)
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The percent change in brain volume from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, and Week 104A)
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Percentage of Change in Hippocampal Volume
Tidsramme: Part A (Week 24A, Week 50A, Week 104A)
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The percent change in right and left hippocampal volume from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, Week 104A)
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Percentage of Change in Ventricular Volume
Tidsramme: Part A (Week 24A, Week 50A, and Week 104A)
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The percent change in ventricular volume from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, and Week 104A)
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Level of Aβ42 Peptides in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of Aβ42 peptides in cerebrospinal fluid (CSF) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of Aβ40 Peptides in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of Aβ40 peptides in cerebrospinal fluid (CSF) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Aβ42/Aβ40 Ratio in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in Aβ42/Aβ40 ratio in cerebrospinal fluid (CSF) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of Total Tau in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of total Tau in cerebrospinal fluid (CSF) from baseline to each applicable postbaseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of p-Tau 181 in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of p-Tau 181 in cerebrospinal fluid (CSF) from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of Neurofilament Light in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of neurofilament light in cerebrospinal fluid (CSF) from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Level of Neurogranin in CSF
Tidsramme: Part A (Week 50A and Week 104A)
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The change in levels of neurogranin in cerebrospinal fluid (CSF) from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Mini Mental State Examination (MMSE) Score
Tidsramme: Part A (baseline, and post-baseline at Week 24A, Week 50A, Week 77A, and Week 104A)
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The change in MMSE score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a MMRM and the ITT analysis set. MMSE is an 11-question measure that tests 5 areas of cognitive function: orientation, registration, attention and calculation, recall, and language. MMSE score ranges: 0-30, with lower scores indicating worst cognition. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (baseline, and post-baseline at Week 24A, Week 50A, Week 77A, and Week 104A)
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Clinical Dementia Rating-Sum of Boxes (CDR-SB) Score
Tidsramme: Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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The change in CDR-SB score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a MMRM and the ITT analysis set. CDR-SB assesses 6 cognitive and functional domains: Memory, Orientation, Judgment & Problem Solving, Community Affairs, Home & Hobbies, Personal Care. CDR-SB score ranges: 0-18. The higher scores mean a worst outcome. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) Score
Tidsramme: Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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The change in RBANS total score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a MMRM and the ITT analysis set. RBANS assesses 5 cognitive domains: Immediate Memory, Visuospatial/constructional, Language, Attention, Delayed Memory. Total score (range 40-160) sums the 5 domain scores. The higher scores mean a better outcome. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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Alzheimer's Disease Cooperative Study - Activities of Daily Living, Mild Cognitive Impairment (ADCS-ADL MCI) Score
Tidsramme: Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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The change in ADCS-ADL MCI total score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a MMRM and the ITT analysis set. ADCS-ADL MCI is a 24-item scale that includes 6 basic activities of daily living (ADL) items and 16 instrumental ADL items that provide a total score: 0-78, with a lower score indicating greater severity. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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Trail Making Test (TMT) Scores
Tidsramme: Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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Change in TMT score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a MMRM and the ITT analysis set. TMT has 2 parts in which the patient connects 25 dots in order as quickly as possible. In TMT-A, targets are numbers 1-25; in TMT-B, targets are numbers 1-13 interleaved with letters A-L. Lower timings indicate better outcome. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 24A, Week 50A, Week 77A, and Week 104A)
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Investigator Global Evaluation (IGE) Score
Tidsramme: Part A (Week 24A, Week 50A, and Week 104A)
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Change in IGE from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using MMRM and ITT analysis set. IGE at baseline:1-Good general status;2-Slight deterioration;3-Moderate deterioration;4-Bad general status. IGE after baseline:1-Marked improvement;2-Moderate improvement;3-Slight improvement;4-No change;5-Slight worsening;6-Moderate worsening;7-Marked worsening. MMRM included IGE after baseline as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix is used. Following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly significantly associated with response measure (p < 0.15). |
Part A (Week 24A, Week 50A, and Week 104A)
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EuroQol 5 Dimensions 5 Levels (EQ-5D-5L) Overall Severity Index Score
Tidsramme: Part A (Week 50A and Week 104A)
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Change in EQ-5D-5L overall severity index from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using MMRM and ITT analysis set. EQ-5D-5L has 5 dimensions: mobility, self-care, usual activities, pain/discomfort, anxiety/depression; rated: 1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems, and 5=extreme problems. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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EuroQol 5 Dimensions 5 Levels - Visual Analogue Scale (EQ-5D-5L - VAS) Score
Tidsramme: Part A (Week 50A and Week 104A)
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The change in EQ-5D-5L - VAS score from baseline to each applicable post-baseline efficacy visit (Part A) was analyzed using a Mixed-Model Repeated Measures (MMRM), and the ITT analysis set. VAS records the patient's self-rated health on a vertical scale, ranging from 100 = 'Best imaginable health state' down to 0 = 'Worst imaginable health state'. The MMRM included change from baseline in the efficacy parameter as the dependent variable; treatment, protocol-specified visits, treatment-by-visit interaction, and amyloid positivity as the fixed effects; baseline efficacy parameter and baseline age as covariates; and measures within-patient at each visit as a repeated measure. An unstructured variance-covariance matrix was used. The following factors may also have been included in the model: ApoE carrier status, baseline use of AD symptomatic medication and clinical subgroup - MCI or vmAD, if found to be significantly associated with the response measure (p < 0.15). |
Part A (Week 50A and Week 104A)
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Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Gennemsnitlig maksimal forøgelse af anti -Aβ40 antistofssignal (optisk densitet [OD] i ELISA) - Følsomhed
Tidsramme: Del A (baseline og post-baseline besøg i uge 2A, uge 6A, uge 10A, uge 14A, uge 18A, uge 24A, uge 40A, uge 44A, uge 50A, uge 77A og uge 104A)
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Gennemsnitlig maksimal stigning (Mδ) af plasma-anti-Aβ40-antistof-signal (optisk densitet [OD] i ELISA) i hvert individ med hensyn til baselinebesøg. Følsomhedsanalyser i PP (del A) analysesæt. |
Del A (baseline og post-baseline besøg i uge 2A, uge 6A, uge 10A, uge 14A, uge 18A, uge 24A, uge 40A, uge 44A, uge 50A, uge 77A og uge 104A)
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Studieleder: Manuel Sarasa, Araclon Biotech Ltd
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- AB1601
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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Kliniske forsøg med ABVAC40
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