- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT03461276
Sicherheit und Immunogenität wiederholter Dosen von ABvac40 bei Patienten mit a-MCI oder Vm-AD
Eine multizentrische, randomisierte, doppelblinde, placebokontrollierte 24-monatige Studie an Patienten mit amnestischer leichter kognitiver Beeinträchtigung oder sehr leichter Alzheimer-Krankheit zur Untersuchung der Sicherheit, Verträglichkeit und Immunantwort von wiederholten subkutanen Injektionen von ABvac40
Die Alzheimer-Krankheit (AD) ist die häufigste Art von Demenz und macht 50-75 % der geschätzten 47 Millionen Menschen mit Demenz weltweit aus. Die Amyloid-Kaskaden-Hypothese der AD geht davon aus, dass die Akkumulation von Amyloid-β (Aβ)-Peptid im Gehirn, die durch ein Ungleichgewicht zwischen Aβ-Produktion und -Clearance verursacht wird, der auslösende Faktor einer Kaskade ist, die letztendlich zu Demenz führt.
Aβ-Peptide werden durch sequentielle Spaltung des Amyloid-Vorläuferproteins (APP), einschließlich Aβ40 und Aβ42, erzeugt. Aβ40 ist die vorherrschende Variante (90 %) unter den sezernierten Aβ-Formen, und obwohl Aβ42 hydrophober und anfälliger für Aggregation ist und Aβ42-Oligomere als die neurotoxischsten Spezies angesehen werden, kann Aβ40 auch hochtoxische diffusionsfähige Aggregate produzieren, was verhindert werden kann in vitro durch spezifische Anti-Aβ40-Antikörper.
Mehrere Studien haben vorgeschlagen, dass eine hohe Konzentration von Aβ40 im Gehirn Patienten mit AD von denen unterscheidet, die senile Plaques haben, aber kognitiv normal sind, was auf die Bedeutung von Aβ40 beim Ausbruch von Demenz hinweist. In Übereinstimmung damit haben frühere Studien gezeigt, dass spezifische Anti-Aβ40-Antikörper NFTs im entorhinalen Cortex und im Hippocampus von AD-Gehirnen markieren und dass diese nicht mit Tau-NFTs kolokalisieren, was auf das Vorhandensein von degenerierenden neuronalen Populationen hindeutet, die mit C gefüllt sind -terminale Fragmente von Aβx-40. Darüber hinaus ist Aβ40 der Hauptbestandteil der Amyloidablagerung um zerebrale Arterien, die eine zerebrale Amyloidangiopathie (CAA) verursacht, die eine Prävalenz von etwa 80–90 % bei Patienten mit AD aufweist (für weitere Informationen siehe Lacosta et al. Alzheimer's Research & Therapy (2018) 10:12 DOI 10.1186/s13195-018-0340-8).
Unter Berücksichtigung dieser früheren Ergebnisse, die darauf hindeuten, dass Strategien gegen Aβ40 neue krankheitsmodifizierende Therapien darstellen könnten, haben wir ABvac40 entwickelt, den ersten aktiven Impfstoff, der auf das C-terminale Ende des Aβ40-Peptids abzielt.
Der Zweck dieser Phase-II-Studie besteht darin, bei Patienten mit a-MCI oder vm-AD das Sicherheits- und Verträglichkeitsniveau zu bestätigen, das in der klinischen Phase-I-Studie zu ABvac40 bei Patienten mit mm-AD erreicht wurde. Darüber hinaus zielt die Studie darauf ab, die durch ABvac40 ausgelöste Immunantwort besser zu charakterisieren und ihre Auswirkungen auf AD-Biomarker zu untersuchen.
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Studientyp
Einschreibung (Tatsächlich)
Phase
- Phase 2
Kontakte und Standorte
Studienorte
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Montpellier, Frankreich, 34295
- CHU de Montpellier
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Toulouse, Frankreich, 31059
- Centre de Recherche Clinique du Gérontopôle
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Bourgogne-Franche-Comté
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Dijon, Bourgogne-Franche-Comté, Frankreich, 21000
- Hôpital François Mitterrand
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Brescia, Italien, 25125
- San Giovanni di Dio - Fatebenefratelli
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Stockholm, Schweden, 141 86
- Karolinska Universitetssjukhuset
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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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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Beschreibung
Einschlusskriterien:
Ein Proband muss alle folgenden Einschlusskriterien erfüllen:
- Mann oder Frau zwischen 55 und 80 Jahren, beide einschließlich, zum Zeitpunkt der Unterzeichnung der Einverständniserklärung.
- Der Patient (oder ggf. sein gesetzlicher Vertreter) und ein naher Verwandter/Betreuer müssen das Patienteninformationsblatt lesen, der Teilnahme an der klinischen Studie zustimmen und die Einverständniserklärung unterschreiben (der Patient und ein naher Verwandter/Betreuer).
- Anwesenheit einer stabilen Pflegekraft, die an den Studienbesuchen der Patienten teilnimmt.
- Die Mini-Mental-Status-Prüfung (MMSE) erzielt je nach Alter und Bildungsniveau zwischen 24 und 30 Punkten (einschließlich).
- Bewertungsskala für klinische Demenz (CDR) mit 0,5.
- Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) Score auf dem Delayed Memory Index (DMI) von 85 oder niedriger.
- Die Ergebnisse des MRT-Gehirnscans des Patienten müssen mit der Diagnose einer klinischen a-MCI oder vm-AD gemäß den folgenden Kriterien übereinstimmen: Scheltens-Skala und Messung der weißen Substanz und vergangener Blutungen.
- Wenn der Patient wegen AD behandelt wird, muss er in den zwei Monaten vor dem Auswahlbesuch stabil gewesen sein.
- Die Behandlung von Begleiterkrankungen muss während des Vormonats vor der Behandlung der Studie stabil sein.
- Positive Beurteilung des Kandidaten durch den Prüfarzt hinsichtlich der Einhaltung der Anforderungen und Verfahren der Studie.
Ausschlusskriterien:
Ein Proband, der eines der folgenden Ausschlusskriterien erfüllt, ist NICHT zur Teilnahme an der Studie berechtigt.
- Bekannte Allergie gegen Bestandteile des Impfstoffs oder Anaphylaxie in der Vorgeschichte, eine schwere allergische Reaktion oder Überempfindlichkeit gegen einen Bestandteil der Formulierung in der Vorgeschichte. Allergie gegen Fisch oder Schalentiere.
- Aktive Infektionskrankheit (d. h. Hepatitis B, C). Positive Syphilis-Serologie.
- Vorgeschichte oder Vorhandensein einer Autoimmunerkrankung, außer leichtes Ekzem, Rhinitis oder Psoriasis.
- Vorliegen oder Vorgeschichte einer Immunschwäche (d. h. HIV).
- Signifikante Nieren- und/oder Lebererkrankung.
- Vorgeschichte von Asthma oder reaktiver Atemwegserkrankung mit Bronchospasmus in den letzten 6 Monaten oder derzeit in regelmäßiger Behandlung.
- Schwere unkontrollierte systemische Erkrankung (z. Diabetes, Herzinsuffizienz, Bluthochdruck).
- Vorgeschichte von Krebs (≤5 Jahre seit der letzten spezifischen Behandlung). Ausnahmen: Basozelluläres Karzinom.
- Signifikante Veränderungen hämatologischer, biochemischer oder urinanalytischer Parameter, insbesondere solche in Bezug auf Vitamin-B12-Spiegel, Folsäure oder Schilddrüsentests.
- Vorgeschichte einer anderen Störung des zentralen Nervensystems, degenerativer oder nicht-degenerativer neurologischer oder psychiatrischer Zustand, der nach Ansicht des Ermittlers die Ursache der Demenz sein könnte oder die kognitive Beeinträchtigung erklären könnte oder die die kognitive Funktion direkt oder durch sie beeinträchtigen könnte Behandlung.
- Geriatric Depression Scale (GDS; abgekürzte Version), Punktzahl >5
- Hat eine „Ja“-Antwort auf die C-SSRS-Suizidgedanken-Elemente 4 oder 5 oder ein suizidales Verhalten innerhalb von 6 Monaten vor dem Screening oder wurde in den letzten 5 Jahren vor dem Screening wegen suizidalem Verhalten ins Krankenhaus eingeliefert oder behandelt.
- Vorgeschichte oder Anzeichen einer zerebrovaskulären Erkrankung (ischämischer oder hämorrhagischer Schlaganfall, transitorische ischämische Attacke) oder Diagnose einer möglichen, wahrscheinlichen oder eindeutigen vaskulären Demenz gemäß den NINDS-AIREN-Kriterien.
- Vorhandensein eines relevanten Musters einer mikrovaskulären Erkrankung im MRT (Leukoaraiose, Fazekas-Score ≥ 2 auf der Skala der tiefen weißen Substanz oder ≥ 4 auf der Gesamtskala) oder mehr als ein lakunärer oder territorialer Infarkt. Jeder andere MRT-Befund, der nach Ansicht des Prüfarztes eine relevante Mitursache für die kognitive Beeinträchtigung des Probanden sein könnte. Das Vorhandensein von bis zu 3 Mikroblutungen ist akzeptabel.
- Vorgeschichte von Blutgerinnungsstörungen oder prädisponierenden Zuständen, Blutgerinnung oder klinisch signifikanten anormalen Ergebnissen des Gerinnungsprofils beim Screening, wie vom Prüfarzt festgestellt.
- Patienten, die mit Antikoagulanzien oder einer Antiaggregationstherapie (Aspirin in einer prophylaktischen Dosis von ≤ 325 mg täglich oder Clopidogrel in einer Dosis von ≤ 75 mg täglich sind erlaubt) behandelt werden, sollten nicht in die Studie aufgenommen werden.
- Modifizierte Hachinski-Ischämie-Skala, Punktzahl höher als 4.
- Operation (mit Vollnarkose) innerhalb der letzten drei Monate, die in die Studie aufgenommen oder während des Studienzeitraums programmiert werden soll.
- Behandlung innerhalb von 30 Tagen vor Besuch 0 mit systemischen Kortikosteroiden oder anderen Immunsuppressiva.
- Impfung gegen Influenza oder eine andere Impfung innerhalb von 2 Monaten vor der ersten IMP-Dosis.
- Patienten, die zuvor in dieser Studie randomisiert wurden.
- Teilnahme an einer anderen klinischen Studie innerhalb von 1 Monat vor dem Screening-Besuch oder innerhalb der letzten 12 Monate nach der letzten Dosis bis zum Screening-Besuch bei Probanden, die an Studien mit einem Studienmedikament teilgenommen haben, dessen Absicht darin bestand, die Progression AD zu ändern, es sei denn Belege für den Erhalt des Placebos liegen vor. Der Patient kann nicht in die Studie aufgenommen werden, wenn das experimentelle Medikament ein immuntherapeutisches Medikament war, einschließlich IVIG oder ein Impfstoff gegen die Alzheimer-Krankheit, es sei denn, es liegt eine Dokumentation über den Erhalt eines Placebos vor.
- Patienten mit Alkohol- oder Drogenmissbrauch oder -abhängigkeit.
- Absolute (mit einem Herzschrittmacher oder implantierbaren Defibrillator) oder relative (Bare-Metal-Stent oder in den letzten sechs Monaten implantierter Stent) Kontraindikationen für eine MRT-Untersuchung. Klaustrophobie-Gefühl lassen Sie keine MRT- oder PET-Untersuchungen durchführen.
- Patienten, die das Protokoll wahrscheinlich nicht einhalten (z. B. nicht in der Lage sind, zu Nachsorgeuntersuchungen zurückzukehren).
- Frauen im gebärfähigen Alter, schwanger oder stillend.
- Signifikante Veränderungen im EKG, die mit einem zusätzlichen Risiko für den Patienten verbunden sind.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Crossover-Aufgabe
- Maskierung: Verdreifachen
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
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Experimental: ABvac40
Sechs Verabreichungen von ABvac40; die ersten fünf werden einmal alle 4 Wochen und die sechste in Woche 42 verabreicht.
Jede Verabreichung besteht aus einer subkutanen Injektion von 1 ml ABvac40.
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ABVAC40 besteht in einem Konjugat von Aβx-40 mit einem Trägerprotein (KLH), der in Phosphatpuffer fahrt, das 0,35% Aluminiumhydroxid enthält, als Adjuvans.
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Placebo-Komparator: Placebo
Sechs Verabreichungen von Placebo; die ersten fünf werden einmal alle 4 Wochen und die sechste in Woche 42 verabreicht.
Jede Verabreichung besteht aus einer subkutanen Injektion von 1 ml des Vehikelpuffers des Impfstoffs ohne die aktive Komponente.
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Placebo besteht aus dem Fahrzeug des Impfstoffs (Phosphatpuffer, der 0,35% Aluminiumhydroxid enthält) ohne Konjugat.
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Durchschnittliches maximales Inkrement des Anti-Aβ40-Antikörpersignals (optische Dichte [OD] in ELISA)
Zeitfenster: Teil A (Basis- und Nachbaseline-Besuche in Woche 2A, Woche 6A, Woche 10a, Woche 14A, Woche 18A, Woche 24a, Woche 40A, Woche 44A, Woche 50A, Woche 77a und Woche 104a)
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Durchschnittliches maximales Inkrement (Mδ) des Plasma-Anti-Aβ40-Antikörpersignals (optische Dichte [OD] in ELISA) in jedem Subjekt im Hinblick auf den Basisbesuch.
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Teil A (Basis- und Nachbaseline-Besuche in Woche 2A, Woche 6A, Woche 10a, Woche 14A, Woche 18A, Woche 24a, Woche 40A, Woche 44A, Woche 50A, Woche 77a und Woche 104a)
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Fachabbruch aufgrund von Teees
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der zurückgezogenen Probanden aufgrund von behandlungsbedingten unerwünschten Ereignissen (TEAEs) während der gesamten Studie.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der Probanden mit klinisch signifikanten Anomalien bei der körperlichen Untersuchung
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Klinisch signifikante (CS) Abnormalitäten bei der körperlichen Untersuchung, die während der Studie berichtet wurde.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der Probanden mit klinisch signifikanten Anomalien bei der neurologischen Untersuchung
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Klinisch signifikante (CS) Abnormalitäten in der neurologischen Untersuchung berichteten während der Studie.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der Probanden mit klinisch signifikanten Anomalien in der analytischen Hämatologie
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Klinisch signifikante (CS) Abnormalitäten in den Hämatologieparametern, die während der Studie angegeben wurden.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der Probanden mit klinisch signifikanten Anomalien in der analytischen Biochemie
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Klinisch signifikante (CS) Abnormalitäten bei den während der Studie angegebenen Biochemiesparametern.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Anzahl der Probanden mit klinisch signifikanten Anomalien bei der Koagulation
Zeitfenster: Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Klinisch signifikante (CS) Abnormalitäten bei Koagulationsparametern, die während der Studie angegeben wurden.
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Ganze Studiendauer (Woche 0 bis Woche 104 in Teil A und Woche 0 bis Woche 77 in Teil B)
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Columbia Suicide Schweregrad Rateskala
Zeitfenster: Teil A (Woche 24a, Woche 50A, Woche 77A und Woche 104a)
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Probanden mit Selbstmordgedanken oder Selbstmordverhalten seit dem letzten Besuch.
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Teil A (Woche 24a, Woche 50A, Woche 77A und Woche 104a)
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Level of Anti-Aβ40 Antibodies in CSF
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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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Andere Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Durchschnittliches maximales Erhöhung des Anti -Aβ40 -Antikörpersignals (optische Dichte [OD] in ELISA) - Empfindlichkeit
Zeitfenster: Teil A (Basis- und Nachbaseline-Besuche in Woche 2A, Woche 6A, Woche 10a, Woche 14A, Woche 18A, Woche 24a, Woche 40A, Woche 44A, Woche 50A, Woche 77a und Woche 104a)
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Durchschnittliches maximales Inkrement (Mδ) des Plasma-Anti-Aβ40-Antikörpersignals (optische Dichte [OD] in ELISA) in jedem Subjekt im Hinblick auf den Basisbesuch. Sensitivitätsanalysen im PP (Teil A) -Analysesatz. |
Teil A (Basis- und Nachbaseline-Besuche in Woche 2A, Woche 6A, Woche 10a, Woche 14A, Woche 18A, Woche 24a, Woche 40A, Woche 44A, Woche 50A, Woche 77a und Woche 104a)
|
Mitarbeiter und Ermittler
Sponsor
Ermittler
- Studienleiter: Manuel Sarasa, Araclon Biotech Ltd
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- AB1601
Plan für individuelle Teilnehmerdaten (IPD)
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Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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Klinische Studien zur ABVAC40
-
Araclon Biotech S.L.Abgeschlossen