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    Summary
    EudraCT Number:2012-005542-38
    Sponsor's Protocol Code Number:8931-019
    National Competent Authority:Spain - AEMPS
    Clinical Trial Type:EEA CTA
    Trial Status:Prematurely Ended
    Date on which this record was first entered in the EudraCT database:2013-10-01
    Trial results View results
    Index
    A. PROTOCOL INFORMATION
    B. SPONSOR INFORMATION
    C. APPLICANT IDENTIFICATION
    D. IMP IDENTIFICATION
    D.8 INFORMATION ON PLACEBO
    E. GENERAL INFORMATION ON THE TRIAL
    F. POPULATION OF TRIAL SUBJECTS
    G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
    N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
    P. END OF TRIAL
    Expand All   Collapse All
    A. Protocol Information
    A.1Member State ConcernedSpain - AEMPS
    A.2EudraCT number2012-005542-38
    A.3Full title of the trial
    A Phase III, Randomized, Placebo-Controlled, Parallel-Group, Double-Blind Clinical Trial to Study the Efficacy and Safety of MK-8931 (SCH 900931) in Subjects with Amnestic Mild Cognitive Impairment Due to Alzheimer?s Disease (Prodromal AD).
    Ensayo clínico en fase III, aleatorizado, doble ciego, controlado con placebo y de grupos paralelos para estudiar la eficacia y la seguridad de MK-8931 (SCH 900931) en pacientes con deterioro cognitivo leve amnésico por enfermedad de Alzheimer (enfermedad de Alzheimer prodrómica).
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    A Safety and Efficacy Study for Alzheimer's Disease (Prodromal AD)
    Estudio de eficacia y seguridad en pacientes por enfermedad de Alzheimer (EA prodrómica).
    A.3.2Name or abbreviated title of the trial where available
    A Safety and Efficacy Study for Alzheimer's Disease (Prodromal AD)
    Estudio de eficacia y seguridad en pacientes por enfermedad de Alzheimer (EA prodrómica)
    A.4.1Sponsor's protocol code number8931-019
    A.7Trial is part of a Paediatric Investigation Plan No
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorMerck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc
    B.1.3.4CountryUnited States
    B.3.1 and B.3.2Status of the sponsorCommercial
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing supportMerck Sharp & Dohme Corp., a subsidiary of Merck & Co.,
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationMerck Sharp & Dohme Corp., a subsidiary of Merck. Inc
    B.5.2Functional name of contact pointGlobal Clinical Trials Operations
    B.5.3 Address:
    B.5.3.1Street AddressOne Merck Drive, P.O. Box 100
    B.5.3.2Town/ cityWhitehouse Station, NJ
    B.5.3.3Post code08889-0100
    B.5.3.4CountryUnited States
    B.5.4Telephone number001267305-7678
    B.5.5Fax number001267305-6440
    B.5.6E-mailmichael.egan@merck.com
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameMK-8931
    D.3.2Product code MK-8931
    D.3.4Pharmaceutical form Tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNMK-8931
    D.3.9.2Current sponsor codeMK-8931, SCH900931
    D.3.9.3Other descriptive nameSCH 900931
    D.3.9.4EV Substance CodeSUB31364
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number12
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 2
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameMK-8931
    D.3.2Product code MK-8931
    D.3.4Pharmaceutical form Tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNMK-8931
    D.3.9.2Current sponsor codeMK-8931, SCH900931
    D.3.9.3Other descriptive nameSCH 900931
    D.3.9.4EV Substance CodeSUB31364
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number40
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    D.8 Placebo: 1
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboTablet
    D.8.4Route of administration of the placeboOral use
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    prodromal Alzheimer's Disease
    Enfermedad de Alzheimer prodrómica
    E.1.1.1Medical condition in easily understood language
    early Alzheimer?s Disease
    Enfermedad de Alzheimer de temprana
    E.1.1.2Therapeutic area Diseases [C] - Nervous System Diseases [C10]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 16.0
    E.1.2Level HLT
    E.1.2Classification code 10001897
    E.1.2Term Alzheimer's disease (incl subtypes)
    E.1.2System Organ Class 100000004852
    E.1.3Condition being studied is a rare disease No
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    -To assess the efficacy of two doses of MK-8931 based on overall clinical progression in subjects with prodromal Alzheimer's Disease (AD).
    -To assess the safety and tolerability of two doses of MK-8931 in the treatment of subjects with prodromal AD.
    -Evaluar la eficacia de dos dosis de MK-8931 a tenor de la progresión clínica global en pacientes con enfermedad de Alzheimer (EA) prodrómica.
    -Evaluar la seguridad y la tolerabilidad de dos dosis de MK-8931 en el tratamiento de pacientes con EA prodrómica.
    E.2.2Secondary objectives of the trial
    -To assess the efficacy of two doses of MK-8931 in slowing clinical decline and disease progression in subjects with prodromal AD.
    -Evaluar la eficacia de dos dosis de MK-8931 para retrasar el deterioro clínico y la progresión de la enfermedad en pacientes con EA prodrómica.
    E.2.3Trial contains a sub-study Yes
    E.2.3.1Full title, date and version of each sub-study and their related objectives
    The substudies are embedded in the main-study protocol. The main objectives are as follows:

    -To assess the effect of MK-8931 on CSF total tau in subjects included in the CSF substudy.
    -To assess the effect of MK-8931 on the composite cortical amyloid standard uptake value ratio (SUVR) assessed with amyloid tracer [18F]Flutemetamol using PET imaging in subjects included in the PET substudy.
    -To support the development of a CSF based companion diagnostic.
    Los subestudios están incluídos dentro del estudio principal. Los objetivos primordiales son los siguientes:
    - Evaluar el efecto del MK-8931 en las concentraciones totales de proteína tau en el LCR en sujetos incluídos en el subestudio de LCR.
    - Evaluar el efecto del MK-8931 en el cociente del valor compuesto de captación cortical normalizada de amiloide evaluado con el marcador del amiloide [18F]flutemetamol usando la prueba de PET en sujetos incluidos en el subestudio de PET
    - Respaldar el desarrollo de un análisis diagnóstico en LCR de apoyo
    E.3Principal inclusion criteria
    Each subject must:
    -Be > or = to 50 and < or = to 85 years of age at the Screening Visit.
    -Meet the following criteria for a diagnosis of prodromal AD:
    Each subject must report a history of subjective memory decline with gradual onset and slow progression for at least one year before Screening, that is either corroborated by an informant who knows the subject well or is documented in medical records.
    Each subject must have objective impairment in episodic memory at Screening that is > or = to 1.0 SD below the appropriate population mean as measured by the screening memory test [Repeatable Battery for the Assessment of Neuropsychological Status (RBANS)]. An RBANS delayed memory index score of < or = to 85 is required for entry. (Note: the proportion of subjects with RBANS delayed memory index scores ranging from 79 to 85 (approximately 1.5 to 1.0 SD below the appropriate population mean), inclusive, will not exceed 15-30% of the total number randomized).
    Each subject must have general cognitive function and activities of daily living sufficiently intact, based on clinical assessment, so as not to meet criteria for mild AD dementia (based on DSM-IV-TR and NINCDS-ADRDA criteria).
    Each subject must have a positive amyloid imaging PET scan using [18F]flutametamol at Screening or positive CSF tau:A?42 ratio at Screening (see Trial Manuals for details). PET is the primary inclusion tool for the trial. Subjects who fail to meet inclusion criteria based on PET but qualify based on CSF will be enrolled in a separate CSF subgroup of the trial. (Refer to Protocol Section 7.1.3.4 for direction regarding initiation of CSF collection in the trial.)
    -Have an MMSE score > or = to 24 at Screening.
    -Be able to read at a 6th grade level or equivalent, as determined by the investigator, and must have a history of academic achievement and/or employment sufficient to exclude mental retardation.
    -If receiving an acetylcholinesterase inhibitor, memantine, medical food/supplement, and/or herbal medications for AD, be on a stable dose for at least the three months before Screening, and the subject must be willing to remain on the same dose for the duration of the trial. The treatment and dose that the subject is receiving at Screening must not be changed during the trial unless medically necessary. Additional treatments [including herbal medications] for AD that are not specified in the protocol must not be initiated during the trial. The subject and trial partner must agree that they do not plan to discontinue treatment or initiate additional AD treatments during the trial unless medically necessary. (See Protocol Section 5.5.2 for additional details regarding use of other AD therapy.)
    -Have a reliable and competent trial partner/informant who must have a close relationship with the subject, have face to face contact at least three days a week for a minimum of six waking hours a week, be willing to accompany the subject to all trial visits, and be willing to monitor compliance of the administration of the trial medication. The trial partner/informant should understand the nature of the trial and adhere to trial requirements (e.g., dose, visit schedules, receive phone calls, and evaluations).
    -Have results of clinical laboratory tests (complete blood count [CBC], blood chemistries, thyroid stimulating hormone [TSH], and urinalysis) within normal limits or clinically acceptable to the investigator at Screening.
    -Have results of a physical examination, vital signs, and ECG within normal limits or clinically acceptable to the investigator at Screening.
    Para poder participar en este ensayo, los pacientes deberán:
    -Tener mas o igual a 50 y menos o igual a 85 años en la visita de selección.
    -Cumplir los siguientes criterios para el diagnóstico de EA prodrómica:
    Cada paciente deberá comunicar antecedentes de deterioro subjetivo de la memoria de aparición gradual y progresión lenta durante al menos un año antes de la selección, lo cual deberá ser corroborado por un informador que conozca bien al paciente o estar documentado en la historia clínica.
    Cada paciente deberá presentar un deterioro objetivo de la memoria episódica en el momento de selección que sea mayor o igual a 1,0 DE por debajo de la media poblacional correspondiente, determinada mediante la prueba de memoria de selección [Batería repetible para la evaluación del estado neuropsicológico (RBANS)]. Para la inclusión en el ensayo, se requiere una puntuación en el índice de memoria diferida RBANS menor o igual a 85. (Nota: La proporción de pacientes con una puntuación en el índice de memoria diferida RBANS de entre 79 y 85 (entre 1,5 y 1,0 DE por debajo de la media poblacional correspondiente), ambos inclusive, no superará el 15-30 % del número total aleatorizado).
    Cada paciente deberá tener una función cognitiva general y unas actividades cotidianas suficientemente intactas, basándose en la evaluación clínica, como para no cumplir los criterios de demencia por EA leve (según los criterios del DSM-IV-TR y NINCDS-ADRDA).
    Cada paciente deberá tener un escaner PET con imagen amiloide positiva utilizando [18F]flutametamol en el momento de selección o un cociente tau:A?42 en LCR positivo en el momento de selección (véanse los manuales del ensayo para obtener información detallada). La herramienta de inclusión principal de este ensayo será la PET. Los pacientes que no cumplan los criterios de inclusión basados en la PET, pero que sí cumplan los basados en el LCR, formarán parte de un subgrupo de LCR independiente del ensayo. (En la sección 7.1.3.4 se recogen instrucciones en relación con el inicio de la obtención de LCR en el ensayo.)
    Tener una puntuación MMSE > o = a 24 en el momento de selección.
    -Saber leer a un nivel de 6º grado o equivalente, según lo determinado por el investigador, y tener antecedentes de logros académicos y/o empleo suficientes para descartar un retraso mental.
    -Cuando un paciente esté tomando un inhibidor de la acetilcolinesterasa, memantina, suplementos alimenticios médicos y/o productos de fitoterapia para la EA, la dosis deberá haberse mantenido estable durante al menos 3 meses antes de la selección y el paciente deberá estar dispuesto a continuar con la misma dosis durante todo el ensayo. El tratamiento y la dosis que esté recibiendo el paciente en el momento de selección no podrán modificarse durante el ensayo salvo que sea médicamente necesario. Durante el ensayo no podrán iniciarse otros tratamientos (incluidos productos de fitoterapia) para la EA que no se especifiquen en el protocolo. El paciente y el acompañante deberán coincidir en que no planean suspender el tratamiento ni empezar a recibir otros tratamientos para la EA durante el ensayo a menos que sea médicamente necesario. (Véase la sección 5.5.2 para obtener más detalles sobre el uso de otros tratamientos para la EA.)
    -Contar con un acompañante/ informador para el ensayo fiable y competente que deberá tener una relación estrecha con el paciente, mantener encuentros cara a cara al menos 3 días por semana durante un mínimo de 6 horas de vigilia por semana, estar dispuesto a acompañar al paciente a todas las visitas del ensayo y estar dispuesto a controlar el cumplimiento de la administración de la medicación del ensayo. El acompañante /informador deberá comprender la naturaleza del ensayo y cumplir los requisitos del mismo (por ejemplo, dosis, fechas de las visitas, recepción de llamadas telefónicas y evaluaciones).
    -Contar con resultados dentro de los límites normales en las pruebas analíticas (hemograma completo, bioquímica sanguínea, tirotropina [TSH] y análisis de orina)o resultados que sean clínicamente aceptables para el investigador en el momento de selección.
    -Contar con resultados dentro de los límites normales en la exploración física, las constantes vitales y el ECG o resultados que sean clínicamente aceptables para el investigador en el momento de selección.
    E.4Principal exclusion criteria
    -Has a Rosen modified Hachinski Ischemia Score > 4 at Screening
    -Has a known history of stroke or evidence from screening MRI scan that is clinically important in the investigator's opinion.
    -Meets the criteria for a diagnosis of dementia, including probable or possible AD, based on DSM IV TR or NINCDS ADRDA criteria at Screening or Baseline.
    -Has evidence of a clinically relevant neurological disorder other than the disease being studied at Screening, including but not limited to: vascular dementia, parkinsonism, frontotemporal dementia, Huntington's disease, amyotrophic lateral sclerosis, multiple sclerosis, progressive supranuclear palsy, neurosyphilis, dementia with Lewy bodies, other types of dementia, mental retardation, hypoxic cerebral damage, cognitive impairment due to other disorders, or head trauma with loss of consciousness that led to persistent cognitive deficits.
    ? Has evidence of a clinically relevant or unstable psychiatric disorder, based on DSM IV TR criteria, including schizophrenia or other psychotic disorder, bipolar disorder, major depression, or delirium. Major depression in remission is not exclusionary.
    ? Has evidence of a current episode of major depression based on investigator's judgment. A score on the 15-item Geriatric Depression Scale (GDS) of 5 or more requires an assessment by an appropriate health care professional to evaluate for the presence of major depression. Subjects with a score of 5 or more who are not diagnosed with major depression following such an assessment may be included in the trial.
    ? Has an MRI scan obtained at Screening that shows evidence of a neurological disorder other than prodromal AD or > 4 cerebral microhemorrhages a single area of superficial siderosis, evidence of a prior macrohemorrhage, > 3 lacunar infarcts over 10 mm each, any cortical infarct over 10 mm, or any other clinically significant finding (e.g., any lesion that may account for their cognitive impairment, including but not limited to brain tumor, severe white matter disease with a rating of 3 on the age-related white matter changes (ARWMC) scale, arteriovenous malformation, cavernous hemangioma, or any infarct in a strategic subcortical location).
    ? Has a history of hepatitis or liver disease that, in the opinion of the investigator, has been active within the six months prior Screening.
    ? Has a recent or ongoing, uncontrolled, clinically significant medical condition within three months of the Screening Visit (such as, but not limited to, diabetes, hypertension, thyroid or endocrine disease, congestive heart failure, angina, cardiac or gastrointestinal disease, dialysis, or abnormal renal function with estimated creatinine clearance < 30 mL/min) other than the condition being studied such that, in the judgment of the investigator, participation in the trial would pose a significant medical risk to the subject. Controlled co-morbid conditions (including diabetes, hypertension, heart disease, etc.) are not exclusionary if stable within three months of the Screening Visit. All concomitant medications, supplements, or other substances must be kept as stable as medically possible during the trial. Note: urinary tract infections at screening are not exclusionary if adequately treated (as documented by repeat urinalysis) prior to baseline.
    ? Has a history or current evidence of long QT syndrome, QTC interval ? 470 milliseconds (for male subjects) or ? 480 milliseconds (for female subjects), or torsades de pointes. (Note: Determination of QTc interval at Screening will be based on the average of three measurements, using the Fridericia formula for correction.)
    ? Has a history of malignancy occurring within the five years immediately before Screening, except for a subject who has been adequately treated for
    o basal cell or squamous cell skin cancer,
    o in situ cervical cancer, or
    o localized prostate carcinoma; or
    o who has undergone potentially curative therapy with no evidence of recurrence for ? 3 year post therapy, and who is deemed at low risk for recurrence by her/his treating physician.
    ? Has one of the following:
    o clinically significant vitamin B12 or folate deficiency in the six months immediately before Screening, or
    o vitamin B12 or folate deficiency in addition to increased serum homocysteine or methylmelonic acid levels at Screening as determined by central laboratory normal values.
    -Presenten una puntuación de isquemia de Hachinski modificada por Rosen mayor a 4 en el momento de selección
    -Tengan antecedentes de ictus o signos en la RM de selección que, en opinión del investigador, son clínicamente importantes.
    -Cumplan los criterios diagnósticos de demencia, incluida EA probable o posible, del DSM IV-TR o el NINCDS-ADRDA [20] en la visita de selección o basal.
    -Tengan datos de un trastorno neurológico clínicamente importante diferente de la enfermedad en estudio en el momento de selección, entre los que figuran: demencia vascular, parkinsonismo, demencia frontotemporal, enfermedad de Huntington, esclerosis lateral amiotrófica, esclerosis múltiple, parálisis supranuclear progresiva, neurosífilis, demencia con cuerpos de Lewy, otros tipos de demencia, retraso mental, lesión cerebral hipóxica, deterioro cognitivo debido a otros trastornos o traumatismo craneoencefálico con pérdida de conocimiento que produjo déficit cognitivos persistentes.
    -Tengan datos de un trastorno psiquiátrico inestable o clínicamente importante, según los criterios del DSM-IV-TR, como esquizofrenia u otro trastorno psicótico, trastorno bipolar, depresión mayor o delirium. La depresión mayor en remisión no será motivo de exclusión.
    -Tengan datos de un episodio presente de depresión mayor, a juicio del investigador. Una puntuación en la Escala de depresión geriátrica de 15 apartados (GDS, Geriatric Depression Scale) de 5 o más exigirá una evaluación por parte de un profesional sanitario apropiado para valorar la presencia de una depresión mayor. Los pacientes con una puntuación de 5 o superior que no sean diagnosticados de depresión mayor tras dicha evaluación podrán participar en el ensayo.
    -Cuenten con una RM obtenida en el momento de selección que muestre signos de un trastorno neurológico distinto de la EA prodrómica o más de 4 microhemorragias cerebrales , un foco aislado de siderosis superficial, signos de una macrohemorragia previa, más de 3 infartos lagunares superiores a 10 mm cada uno, cualquier infarto cortical superior a 10 mm o cualquier otro hallazgo clínicamente significativo (por ejemplo, cualquier lesión que pueda explicar su deterioro cognitivo, como un tumor cerebral, enfermedad grave de la sustancia blanca con una valoración de 3 en la escala de alteraciones de la sustancia blanca relacionadas con la edad (ARWMC, age-related white matter changes), malformación arteriovenosa, hemangioma cavernoso o cualquier infarto en una localización subcortical estratégica).
    -Tengan antecedentes de hepatitis o hepatopatía que, en opinión del investigador, ha estado activa en los seis meses previos a la selección.
    -Tengan una afección médica de importancia clínica, no controlada, reciente o activa en los tres meses previos a la visita de selección (como, por ejemplo, diabetes, hipertensión, enfermedad tiroidea o endocrina, insuficiencia cardíaca congestiva, angina de pecho, cardiopatía, enfermedad digestiva, diálisis o disfunción renal con un aclaramiento de creatinina calculado < 30 ml/min) diferente de la enfermedad en estudio, de manera que, en opinión del investigador, su participación en el ensayo les supondría un riesgo médico importante. Las enfermedades coexistentes controladas (como diabetes, hipertensión, cardiopatía, etc) no serán motivo de exclusión siempre que se hayan mantenido estables en los tres meses previos a la visita de selección. Todos los medicamentos concomitantes, suplementos u otras sustancias tendrán que mantenerse tan estables como sea médicamente posible durante el ensayo. Nota: Las infecciones urinarias presentes en el momento de selección no serán motivo de exclusión en caso de tratarse debidamente (documentado mediante un análisis de orina repetido) antes de la visita basal.
    -Tengan antecedentes o indicios presentes de síndrome del QT largo, intervalo QTc > o = a 470 ms (en varones) o ? 480 ms (en mujeres) o torsades de pointes. (Nota: La determinación del intervalo QTc en el momento de selección se basará en el promedio de tres mediciones, utilizando la fórmula de corrección de Fridericia.)
    -Tengan antecedentes de una neoplasia maligna en los cinco años inmediatamente anteriores a la selección, excepto si han recibido un tratamiento adecuado por un carcinoma basocelular o espinocelular de piel, cáncer de cuello uterino in situ o carcinoma de próstata localizado o se han sometido a un tratamiento potencialmente curativo sin signos de recidiva durante > o = a 3 años después del tratamiento y el médico encargado de su tratamiento considera que tiene un riesgo bajo de recidiva.
    -Presenten una de las circunstancias siguientes:
    Carencia de vitamina B12 o folato clínicamente importante en los seis meses inmediatamente anteriores a la selección.
    Carencia de vitamina B12 o folato, además de un aumento de las concentraciones séricas de homocisteína o ácido metilmalónico en el momento de selección, según lo determinado por los valores normales del laboratorio central.
    E.5 End points
    E.5.1Primary end point(s)
    The primary efficacy endpoint is the change from Baseline in the Clinical Dementia Rating Sum of Boxes (CDR SB) score at Week 104.
    Variación con respecto al momento basal de la escala CDR-SB al cabo de 104 semanas
    E.5.1.1Timepoint(s) of evaluation of this end point
    Baseline and Week 104
    Momento basal y semana 104
    E.5.2Secondary end point(s)
    Secondary efficacy endpoints are:
    -the time to progression to probable AD dementia
    -the mean difference between the last (Week 104) and first (Week 13) postdose timepoint in CDR-SB
    -the change from Baseline at Week 104 in the 3-domain composite cognition score (CCS-3D)
    -the change from Baseline at Week 104 in total hippocampal volume
    -the change from Baseline at Week 104 in CSF total tau
    -the change from Baseline at Week 104 in composite cortical amyloid SUVR assessed with amyloid tracer [18F]Flutemetamol using PET imaging
    -the change from Baseline at Week 104 in the Alzheimer?s Disease Cooperative Study Activities of Daily Living Inventory (mild cognitive impairment [MCI] version) (ADCS ADLMCI) score
    -Tiempo hasta la progresión a probable demencia por EA
    -Diferencia media entre el último (semana 104) y el primer (semana 13) momento posterior a la administración en la escala CDR-SB.
    -Variación entre el momento basal y la semana 104 de la variación de la puntuación CCS-3D.
    -Variación entre el momento basal y la semana 104 del volumen total del hipocampo.
    -Variación entre el momento basal y la semana 104 de la concentración total de proteína tau en LCR.
    -Variación entre el momento basal y la semana 104 del cociente del valor compuesto de captación cortical normalizada de amiloide evaluado mediante PET con el marcador del amiloide [18F]flutemetamol.
    -Variación entre el momento basal y la semana 104 de la puntuación ADCS-ADLMCI.
    E.5.2.1Timepoint(s) of evaluation of this end point
    -progression to probable AD dementia: Weeks 2, 6, 13, 26, 39, 52, 65, 78, 91, 104
    -Mean difference in CDR-SB: Weeks 13 and 104
    -CCS-3D: Baseline, Week 104
    -Total hippocampal volume: Screening, Week 104
    -CSF total tau: Screening, Week 104
    -Cortical amyloid SUVR: Screening, Week 104
    -ADCS-ADLMCI: Screening, Week 104
    -Tiempo hasta la progresión a probable demencia por EA: Semanas 2, 6, 13, 26, 39, 52, 65, 78, 91, 104
    -Diferencia media entre el último y el primer momento posterior a la administración en la escala CDR-SB: Semana 104 y Semana 13
    -Variación de la puntuación CCS-3D: Momento basal y semana 104
    -Variación n total del hipocampo: momento basal y semana 104
    -Variación de la concentración total de proteína tau en LCR: momento basal y semana 104.
    -Variación del cociente del valor compuesto de captación cortical normalizada de amiloide evaluado mediante PET con el marcador del amiloide [18F]flutemetamol momento basal y semana 104.
    -Variación momento basal y semana 104.
    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis No
    E.6.2Prophylaxis No
    E.6.3Therapy Yes
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic Yes
    E.6.8Bioequivalence No
    E.6.9Dose response No
    E.6.10Pharmacogenetic Yes
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic Yes
    E.6.13Others No
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) No
    E.7.1.1First administration to humans No
    E.7.1.2Bioequivalence study No
    E.7.1.3Other No
    E.7.1.3.1Other trial type description
    E.7.2Therapeutic exploratory (Phase II) No
    E.7.3Therapeutic confirmatory (Phase III) Yes
    E.7.4Therapeutic use (Phase IV) No
    E.8 Design of the trial
    E.8.1Controlled Yes
    E.8.1.1Randomised Yes
    E.8.1.2Open No
    E.8.1.3Single blind No
    E.8.1.4Double blind Yes
    E.8.1.5Parallel group Yes
    E.8.1.6Cross over No
    E.8.1.7Other No
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) No
    E.8.2.2Placebo Yes
    E.8.2.3Other No
    E.8.2.4Number of treatment arms in the trial3
    E.8.3 The trial involves single site in the Member State concerned No
    E.8.4 The trial involves multiple sites in the Member State concerned Yes
    E.8.4.1Number of sites anticipated in Member State concerned8
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA55
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA Yes
    E.8.6.2Trial being conducted completely outside of the EEA No
    E.8.6.3If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned
    Argentina
    Australia
    Austria
    Belgium
    Brazil
    Canada
    Czech Republic
    Finland
    France
    Germany
    Italy
    Japan
    Netherlands
    New Zealand
    Norway
    South Africa
    Spain
    Switzerland
    United Kingdom
    United States
    E.8.7Trial has a data monitoring committee Yes
    E.8.8 Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial
    LVLS
    LPLV
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years4
    E.8.9.1In the Member State concerned months0
    E.8.9.1In the Member State concerned days0
    E.8.9.2In all countries concerned by the trial years4
    E.8.9.2In all countries concerned by the trial months0
    E.8.9.2In all countries concerned by the trial days0
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 No
    F.1.1.1In Utero No
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) No
    F.1.1.3Newborns (0-27 days) No
    F.1.1.4Infants and toddlers (28 days-23 months) No
    F.1.1.5Children (2-11years) No
    F.1.1.6Adolescents (12-17 years) No
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 30
    F.1.3Elderly (>=65 years) Yes
    F.1.3.1Number of subjects for this age range: 1470
    F.2 Gender
    F.2.1Female Yes
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Yes
    F.3.3.1Women of childbearing potential not using contraception No
    F.3.3.2Women of child-bearing potential using contraception No
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally No
    F.3.3.7Others Yes
    F.3.3.7.1Details of other specific vulnerable populations
    Patients with mild cognitive impairment who may progress to dementia during the trial
    Pacientes con deterioro cognitivo leve amnésico que pueden evolucionar a demencia durante el ensayo
    F.4 Planned number of subjects to be included
    F.4.1In the member state74
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 462
    F.4.2.2In the whole clinical trial 1500
    F.5 Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)
    Subjects who have completed the trial, demonstrated acceptable compliance with trial medication, and have not initiated acetylcholinesterase inhibitors or memantine during the trial will be eligible for enrollment in the separate extension protocol (if approved locally). In the extension study, all subjects, including those who initially received placebo in the current protocol, will receive active drug.
    Los sujetos que hayan completado el ensayo, demostrando un cumplimiento de la medicación del estudio aceptable, y que no hayan iniciado un tratamiento con inhibidores de acetilcolinesterasa o memantina durante el ensayo, serán elegibles para ser incluidos en un protocolo separado de extensión (si se aprueba localmente). En el estudio de extensión, todos los sujetos, incluidos aquellos que inicialmente recibieron placebo en el ensayo actual, recibirán fármaco activo
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2013-12-01
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2013-11-15
    P. End of Trial
    P.End of Trial StatusPrematurely Ended
    P.Date of the global end of the trial2018-04-17
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