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    Summary
    EudraCT Number:2020-005173-28
    Sponsor's Protocol Code Number:BLU-263-1201
    National Competent Authority:Spain - AEMPS
    Clinical Trial Type:EEA CTA
    Trial Status:Ongoing
    Date on which this record was first entered in the EudraCT database:2021-07-08
    Trial 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 number2020-005173-28
    A.3Full title of the trial
    A Randomized, Double-Blind, Placebo-Controlled Phase 2/3 Study of BLU-263 in Indolent Systemic Mastocytosis
    Estudio fase 2/3, aleatorizado, doble ciego y controlado con placebo, de BLU-263 en la mastocitosis sistémica indolente
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    A Study of BLU-263 in patients with Indolent Systemic Mastocytosis
    Estudio de BLU-263 en pacientes con mastocitosis sistémica indolente
    A.3.2Name or abbreviated title of the trial where available
    HARBOR
    HARBOR
    A.4.1Sponsor's protocol code numberBLU-263-1201
    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 SponsorBlueprint Medicines Corporation
    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 supportBlueprint Medicines Cororation
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationPPD
    B.5.2Functional name of contact pointPatsy Folio
    B.5.3 Address:
    B.5.3.1Street AddressMetro Center Dr 200
    B.5.3.2Town/ cityAustin
    B.5.3.3Post code78744
    B.5.3.4CountryUnited States
    B.5.4Telephone number900834223
    B.5.6E-mailRegistroEspanolDeEstudiosClinicos@druginfo.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 nameBLU-263
    D.3.2Product code BLU-263
    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 INNNA
    D.3.9.1CAS number 2505078-08-8
    D.3.9.2Current sponsor codeBLU-263
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number100
    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 nameBLU-263
    D.3.2Product code BLU-263
    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 INNNA
    D.3.9.1CAS number 2505078-08-8
    D.3.9.2Current sponsor codeBLU-263
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number25
    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
    Indolent Systemic Mastocytosis (ISM) and monoclonal Mast Cell Activation Syndrome (mMCAS)
    Mastocitosis sistémica indolente (MSI) y síndrome de activación mastocitaria monoclonal (SAMCm)
    E.1.1.1Medical condition in easily understood language
    A Study of BLU-263 in patients with Indolent Systemic Mastocytosis
    Estudio de BLU-263 en pacientes con mastocitosis sistémica indolente
    E.1.1.2Therapeutic area Diseases [C] - Blood and lymphatic diseases [C15]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 20.1
    E.1.2Level LLT
    E.1.2Classification code 10056452
    E.1.2Term Indolent systemic mastocytosis
    E.1.2System Organ Class 100000004864
    E.1.3Condition being studied is a rare disease Yes
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    Part 1: To determine RD of BLU-263.

    Part 2: To assess if treatment with BLU-263 improves outcomes compared to placebo + BSC, as assessed using the ISM-SAF.

    Part 3:
    - To assess the long-term safety and tolerability of treatment with BLU-263.
    - To assess the long-term efficacy of treatment with BLU-263.
    Parte 1: Determinar la DR de BLU-263.

    Parte 2: Evaluar si el tratamiento con BLU-263 mejora los resultados en comparación con un placebo + MTS, para lo cual se usará el ISM-SAF.

    Parte 3:
    •Evaluar la seguridad y la tolerabilidad a largo plazo del tratamiento con BLU-263.
    •Evaluar la eficacia a largo plazo del tratamiento con BLU-263.
    E.2.2Secondary objectives of the trial
    Part 1:
    -To assess the change in measures of mast cell burden from treatment with BLU-263 or placebo
    -To assess the change in ISM-SAF individual symptom scores from treatment with BLU-263 or placebo
    -To assess the time to achieve a 30% reduction in ISM-SAF TSS, ISM-SAF Gastrointestinal Symptom Score (GSS), ISM-SAF Skin Symptom Score (SSS), and ISM-SAF Neurocognitive Symptom Cluster Score

    Part 2:
    -To assess if treatment with BLU-263 improves outcomes compared to placebo, as assessed using serum tryptase
    -To assess if treatment with BLU-263 improves outcomes compared to placebo, as assessed using peripheral blood KIT D816V allele fraction
    -To assess if treatment with BLU-263 improves outcomes compared to placebo + BSC, as assessed using the mean change in ISM-SAF TSS from Baseline

    Part 3:
    -To assess the change in measures of mast cell burden
    -To assess the change in BSC usage for SM symptoms
    -To assess the change in ISM-SAF Individual Symptom Scores
    Parte 1-Evaluar:
    •variación de mediciones de carga de mastocitos observadas con tto.con BLU-263 o placebo.
    •variac.de puntuaciones de síntomas individuales del ISM-SAF observadas con tto.con BLU-263 o placebo
    •tiempo hasta lograr una reducción del 30% en la TSS del ISM-SAF, puntuación de síntomas digestivos(GSS) del ISM-SAF, de síntomas cutáneos(SSS)del ISM-SAF y punt.agrupada de síntomas neurocognitivos del ISM-SAF
    Parte 2-Evaluar:
    •si el tto.con BLU-263 mejora resultados vs placebo, para ello se usará la triptasa sérica
    •si el tto.con BLU-263 mejora resultados vs placebo, para ello se usará la fracción alélica de KITD816V en sangre periférica.
    •si el tto.con BLU-263 mejora resultados vs placebo + MTS, para ello se usará la variación media de la TSS del ISM-SAF con respecto al momento basal.
    Parte 3-Evaluar variación de:
    •las mediciones de la carga de mastocitos.
    •el uso del MTS en relación con los síntomas de la MS.
    •las puntuaciones de síntomas individuales del ISM-SAF.
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    All Patients:
    -1. Patient must have an Eastern Cooperative Oncology Group Performance Status (ECOG PS) of 0 to 2.
    Part 1 only
    -2. Patient must have moderate-to-severe symptoms based on minimum mean total symptom score (TSS) of the ISM Symptom Assessment Form
    (ISM-SAF) over the 14-day eligibility screening period.
    Part 1 and Part 2
    • 3. Patient has confirmed diagnosis of ISM, confirmed by Central Pathology Review of BM biopsy and central review of B- and C-findings
    by WHO diagnostic criteria. Archival biopsy may be used if completed within the past 12 months.
    • 4. Patient must have failed to achieve adequate symptom control for 1 or more Baseline symptoms, as determined by the Investigator, with at
    least 2 of the following symptomatic therapies administered: H1 blockers, H2 blockers, proton-pump inhibitors, leukotriene inhibitors, cromolyn
    sodium, corticosteroids, or omalizumab.
    • 5. Patients must have BSC for ISM symptom management stabilized for at least 14 days prior to starting screening procedures.
    • 6. For patients receiving corticosteroids, the dose must be ≤ 20 mg/d prednisone or equivalent, and the dose must be stable for ≥ 14 days.
    Part M
    • 7. Patients must have mMCAS, confirmed by Central Pathology Review of BM biopsy. An archival biopsy may be used if completed within the
    past 12 months.
    • 8. Patients must have tryptase < 20 ng/mL.
    • 9. Patients must have KIT D816V in peripheral blood (PB) or BM and/or CD25+ Mast cells in BM.
    • 10. Patients must have symptoms consistent with mast cell activation (despite BSC) in at least two organ systems characterized by cutaneous
    flushing, tachycardia, syncope, hypotension, diarrhea, nausea, vomiting and gastro-intestinal cramping) and serum blood tryptase (sBT) levels
    above 8 ng/mL OR Severe (Ring and Messmer grading ≥ II, recurrent anaphylaxis, including but not limited to hymenoptera venom, drug or
    food, regardless of sBT levels.
    Optional PK Group
    • 11. See inclusion criteria for All patients and Part 1/Part 2
    • 12. Accrual may be limited to patients who have specific disease manifestations (ie, GI involvement) or are taking acid-reducing agents
    to better explore the impact of these features on PK.
    Todos los pacientes:
    • 1. El paciente debe tener un estado funcional del Eastern Cooperative Oncology Group (EF del ECOG) de 0 a 2.
    En la parte 1 exclusivamente:
    • 2. El paciente debe presentar síntomas moderados o intensos según la puntuación total media mínima de síntomas (TSS) del formulario de evaluación de síntomas de la MSI (ISM-SAF) durante el período de selección de 14 días para determinar la elegibilidad.
    Partes 1 y 2
    • 3. El paciente tiene un diagnóstico confirmado de MSI, confirmado mediante una revisión de la biopsia de MO por el laboratorio central de anatomía patológica y una revisión centralizada de los hallazgos B y C según los criterios diagnósticos de la OMS. Podrá utilizarse una biopsia de archivo si se obtuvo en los últimos 12 meses.
    • 4. El paciente no debe haber logrado un control adecuado de uno o más síntomas basales, según lo determinado por el investigador, con la administración de al menos dos de los siguientes tratamientos sintomáticos: Antagonistas H1, antagonistas H2, inhibidores de la bomba de protones, inhibidores de leucotrienos, cromoglicato sódico, corticosteroides u omalizumab.
    • 5. El MTS administrado para el tratamiento de los síntomas de la MSI debe haberse mantenido estable durante al menos 14 días antes de que el paciente empiece con los procedimientos de selección.
    • 6. En los pacientes que reciban corticosteroides, la dosis deberá ser ≤ 20 mg/día de prednisona o equivalente y la dosis deberá mantenerse estable durante ≥ 14 días.
    Parte M
    • 7. Los pacientes deben presentar SAMCm, confirmado mediante revisión de una biopsia de MO por el laboratorio central de anatomía patológica. Podrá utilizarse una biopsia de archivo si se obtuvo en los últimos 12 meses.
    • 8. Los pacientes deben tener un valor de triptasa <20 ng/ml.
    • 9. Los pacientes deben presentar KIT D816V en sangre periférica (SP) o en MO o bien mastocitos CD25+ en MO.
    • 10. Los pacientes deberán presentar síntomas compatibles con la activación de mastocitos (a pesar del MTS) en al menos dos sistemas orgánicos (caracterizados por rubefacción cutánea, taquicardia, síncope, hipotensión, diarrea, náuseas, vómitos y cólicos gastrointestinales) y concentraciones séricas de triptasa superiores a 8 ng/ml o bien anafilaxia recurrente grave (grado de Ring y Messmer ≥II, por ejemplo, al veneno de himenópteros, a fármacos o a alimentos, con independencia de las concentraciones de triptasa sérica.
    Grupos de FC opcionales
    • 11. Véanse los criterios de inclusión para todos los pacientes y las partes 1 y 2
    • 12. La inclusión de pacientes puede limitarse a pacientes con manifestaciones específicas de la enfermedad (es decir, afectación digestiva) o que estén tomando fármacos reductores del ácido para explorar mejor la repercusión de estas características en la FC.
    E.4Principal exclusion criteria
    Key Exclusion Criteria:
    • 1. Patient has been diagnosed with any of the following WHO systemic mastocytosis (SM) sub-classifications: cutaneous mastocytosis only, smoldering SM, SM with associated hematologic neoplasm, aggressive SM, mast cell leukemia, or mast cell sarcoma.
    • 2. Patient has been diagnosed with another myeloproliferative disorder.
    • 3. Patient has organ damage C-findings attributable to SM.
    • 4. Patient has clinically significant, uncontrolled, cardiovascular disease
    • 5. Patient has a QT interval corrected using Fridericia's formula (QTcF) > 480 msec.
    • 6. Patient has previously received treatment with any targeted KIT inhibitors.
    • 7. Patient has a history of a primary malignancy that has been diagnosed or required therapy within 3 years. The following prior malignancies are not exclusionary: completely resected basal cell and squamous cell skin cancer, curatively treated localized prostate cancer, and completely resected carcinoma in situ of any site.
    • 8. Time since any cytoreductive therapy including mastinib and midostaurin should be at least 5 half-lives or 14 days (whichever is longer), and for
    cladribine, interferon alpha, pegylated interferon, or antibody therapy <28 days or 5 half-lives of the drug (whichever is longer), before beginning the
    screening period.
    • 9.Patient has received radiotherapy or psoralen and ultraviolet A (PUVA) therapy < 14 days before beginning the screening period.
    Criterios de exclusión fundamentales:
    • 1. El paciente ha sido diagnosticado de cualquiera de las siguientes subclasificaciones de mastocitosis sistémica (MS) de la OMS: mastocitosis cutánea exclusivamente, MS quiescente, MS con neoplasia hematológica asociada, MS agresiva, leucemia mastocitaria o sarcoma mastocitario.
    • 2. El paciente ha sido diagnosticado de otro trastorno mieloproliferativo.
    • 3. El paciente presenta hallazgos C de lesiones orgánicas atribuibles a MS.
    • 4. El paciente tiene una enfermedad cardiovascular clínicamente significativa no controlada
    • 5. El paciente presenta un intervalo QT corregido con la fórmula de Fridericia (QTcF) >480 ms.
    • 6. El paciente ha recibido previamente tratamiento con cualquier inhibidor de KIT dirigido.
    • 7. El paciente tiene antecedentes de una neoplasia maligna primaria que ha sido diagnosticada o ha necesitado tratamiento en los 3 años anteriores. Las siguientes neoplasias malignas previas no son motivo de exclusión: cáncer basocelular o espinocelular de piel totalmente resecado, cáncer de próstata localizado tratado con intención curativa y carcinoma in situ de cualquier localización totalmente resecado.
    • 8. El tiempo transcurrido desde cualquier tratamiento citorreductor, incluidos masitinib y midostaurina, deberá ser, como mínimo, de 5 semividas o 14 días (lo que suponga más tiempo), y en el caso de cladribina, interferón α, interferón pegilado o anticuerpos <28 días o 5 semividas del fármaco (lo que suponga más tiempo), antes de comenzar las evaluaciones de selección.
    • 9. El paciente ha recibido radioterapia o psoraleno y radiación ultravioleta A (PUVA) <14 días antes del comienzo de las evaluaciones de selección.
    E.5 End points
    E.5.1Primary end point(s)
    Part 1
    Safety and tolerability as determined by AEs, serious adverse events (SAEs), and changes in safety laboratory parameters, vital signs, and ECG evaluations
    PK and PD data
    The mean change in Indolent Systemic Mastocytosis-Symptom Assessment Form (ISM-SAF) Total Symptom Score (TSS) from Baseline at Week 13.
    Part 2
    •Proportion of patients with moderate to severe ISM who achieve at least a 30% reduction in ISM-SAF TSS from Baseline at Week 25"
    Part 3
    Safety and tolerability determined by AEs, SAEs, and changes in safety laboratory parameters, vital signs, and ECG evaluations
    The mean change in ISM-SAF TSS from BLU-263 Baseline (the last available observation prior to the first dose of BLU-263)
    Parte 1:
    •Seguridad y tolerabilidad determinadas mediante los acontecimientos adversos (AA), los acontecimientos adversos graves (AAG) y las variaciones de los parámetros analíticos de seguridad, las constantes vitales y las evaluaciones del electrocardiograma (ECG).
    •Datos FC y farmacodinámicos (FD).
    •Variación media de la TSS del ISM-SAF entre el momento basal y la semana 13.
    Parte 2:
    •Proporción de pacientes que logren una reducción de al menos el 30% en la TSS del ISM-SAF entre el momento basal y la semana 25.
    Parte 3:
    •Seguridad y tolerabilidad determinadas por los AA, los AAG y las variaciones de los parámetros analíticos de seguridad, las constantes vitales y las evaluaciones del ECG.
    •Variación media de la TSS del ISM-SAF con respecto al momento basal del tratamiento con BLU-263 (la última observación disponible antes de la primera dosis de BLU-263).
    E.5.1.1Timepoint(s) of evaluation of this end point
    Part 1: At Week 13
    Part 2: At Week 25
    Part 3: Ongoing basis
    Parte 1: en la semana 13
    Parte 2: en la semana 25
    Parte 3: de forma contínua
    E.5.2Secondary end point(s)
    Part 1:
    The mean change in the following measures from Baseline at Week 13:
    •Serum tryptase
    •KIT D816V allele fraction in blood
    •Bone marrow mast cells
    The mean change in ISM-SAF individual symptom scores from Baseline at Week 13
    The time to achieve a 30% reduction in
    ISM-SAF TSS, ISM-SAF GSS, ISM-SAF SSS, and ISM-SAF Neurocognitive Symptom Cluster Score from randomization among patients who achieve such a reduction on or before Week 13
    The mean change in the following measures from Baseline at Week 13:
    •Mastocytosis Quality of Life Questionnaire (MC-QoL) score
    •Patient Global Impression of Severity (PGI-S) score
    •Patient Global Impression of Change (PGI-C) score
    •Twelve-item Short Form Health Survey (SF-12) score
    •Five-level EuroQual 5D (EQ-5D-5L) score
    Additional exploratory endpoints shared across Part 1, Part 2, and Part 3 are detailed in Section 3.4

    Part 2:
    Key Secondary Endpoint(s):
    - The proportion of patients who achieve at least a 50% reduction in serum tryptase from Baseline at Week 25, among patients with Baseline moderate to severe ISM and Baseline tryptase ≥ 20 ng/mL.
    - The proportion of patients who achieve at least a 50% reduction in peripheral blood KIT D816V allele fraction, or a reduction to undetectable levels, from Baseline at Week 25, among patients with Baseline moderate to severe ISM and detectable mutation at Baseline.
    - The mean change in ISM-SAF from Baseline at Week 25, among patients with Baseline moderate to severe ISM
    - The proportion of patients who achieve at least a 50% reduction in bone marrow MCs, or a reduction to no aggregates, from Baseline at Week 25, among patients with Baseline moderate to severe ISM and aggregates at Baseline.

    Secondary Endpoint(s):
    - ORR, among all patients regardless of Baseline ISM-SAF TSS.
    - Part 2 Key Secondary Endpoints, among all patients regardless of Baseline ISM-SAF TSS.
    - The mean change in the following measures of MC burden from Baseline at Week 25, among patients with Baseline severe to moderate ISM:
    • Serum tryptase
    • KIT D816V allele fraction in blood
    • Bone marrow MCs
    - The change in the number of concomitant medications identified as BSC from Baseline.
    - The mean change in ISM-SAF Individual Symptom Scores from Baseline
    - The mean change in ISM-SAF LSS from Baseline.
    - The time to achieve a 30% reduction in ISM-SAF TSS, ISM-SAF GSS, ISM-SAF SSS, and ISM-SAF Neurocognitive Symptom Cluster Score from randomization among patients who achieve such a reduction on or before Week 25.
    - The mean change in the following measures from Baseline at Week 25:
    • MC-QoL score
    • PGI-S score
    • SF-12 score
    • EQ-5D-5L score
    - The mean and individual patient predicted BLU-263 exposure parameters (Cmax, AUC0-24, and Ctrough).
    - Safety and tolerability determined by AEs, SAEs, and changes in safety laboratory parameters, vital signs, and ECG evaluations.
    Part 3:
    The mean change in the following measures of mast cell burden from BLU-263 Baseline:
    •Serum tryptase
    •KIT D816V allele fraction in blood
    The change in the number of concomitant medications identified as BSC from Baseline
    The mean change in ISM-SAF Individual Symptom Scores from Baseline
    The mean change in ISM-SAF Lead Symptom Score from Baseline
    The time to achieve a 30% reduction in
    ISM-SAF TSS, ISM-SAF GSS, ISM-SAF SSS, and ISM-SAF Neurocognitive Symptom Cluster Score from the first dose of BLU-263 among patients who achieve such a reduction on or before 1 year of BLU-263 therapy
    The mean change in the following measures from Baseline at Week 25:
    •MC-QoL score
    •PGI-S score
    •SF-12 score
    •EQ-5D-5L score
    Parte 1:
    Variación media de las siguientes mediciones entre el momento basal y la semana 13:
    •Triptasa sérica
    •Fracción del alelo KIT D816V en sangre
    •Mastocitos de médula ósea
    Variación media de las puntuaciones de síntomas individuales en el formulario de evaluación de síntomas de la mastocitosis sistémica poco activa (FES-MSPA) entre el momento basal y la semana 13
    Tiempo hasta lograr una reducción del 30 % en la puntuación sintomática total (TSS), la puntuación de síntomas digestivos (GSS), la puntuación de síntomas cutáneos (SSS) y la puntuación agrupada de síntomas neurocognitivos en el FES-MSPA desde la aleatorización en los pacientes que logran dicha reducción en la semana 13 o antes
    Variación media de las siguientes mediciones entre el momento basal y la semana 13:
    •Puntuación del cuestionario de calidad de vida en la mastocitosis (MC-QoL)
    •Puntuación de la impresión global de gravedad según el paciente (PGI-S)
    •Puntuación en la impresión global de cambio según el paciente (PGI-C)
    •Puntuación del cuestionario de salud abreviado de 12 ítems (SF-12)
    •Puntuación del cuestionario EuroQual 5D (EQ-5D-5L) de cinco niveles
    En la sección 3.4 se detallan otros criterios de valoración exploratorios compartidos entre las partes 1, 2 y 3

    Parte 2:
    Criterios de valoración secundarios fundamentales:
    - Proporción de pacientes que logren una reducción de al menos el 50 % de la triptasa sérica entre el momento basal y la semana 25, en aquellos con MSPA moderada o grave inicial y una triptasa inicial ≥20 ng/ml.
    - Proporción de pacientes que logren una reducción de al menos el 50 % de la fracción alélica de KIT D816V en sangre periférica, o una reducción a valores indetectables, entre el momento basal y la semana 25, en pacientes con MSPA moderada o grave basal y mutación detectable en el momento basal.
    - Variación media en el FES-MSPA entre el momento basal y la semana 25 en los pacientes con MSPA moderada o grave basal
    - Proporción de pacientes que logran una reducción de al menos el 50 % en los mastocitos de la médula ósea, o una reducción a la ausencia de agregados, entre el momento basal y la semana 25, en pacientes con MSPA moderada o grave basal y agregados en el momento basal.

    Criterios de valoración secundarios:
    - TRG en todos los pacientes sin importar la puntuación TSS basal en el FES-MSPA
    - Criterios de valoración secundarios fundamentales de la parte 2, en todos los pacientes sin importar la puntuación TSS basal en el FES-MSPA.
    - Variación media de las siguientes mediciones de la carga de mastocitos entre el momento basal y la semana 25 en los pacientes con MSPA grave o moderada basal:
    • Triptasa sérica
    • Fracción alélica KIT D816V en sangre
    • Mastocitos de médula ósea
    - Variación con respecto al momento basal del número de medicamentos concomitantes identificados como mejor tratamiento de apoyo.
    - Variación media de las puntuaciones de síntomas individuales en el FES-MSPA con respecto al momento basal
    - Variación media de la puntuación del síntoma principal (LSS) en el FES-MSPA con respecto al momento basal.
    - Tiempo hasta lograr una reducción del 30 % en la puntuación sintomática total (TSS), la puntuación de síntomas digestivos (GSS), la puntuación de síntomas cutáneos (SSS) y la puntuación agrupada de síntomas neurocognitivos en el FES-MSPA desde la aleatorización en los pacientes que logran dicha reducción en la semana 25 o antes.
    - Variación media de las siguientes mediciones entre el momento basal y la semana 25:
    • Puntuación MC-QoL
    • Puntuación PGI-S
    • Puntuación del SF-12
    • Puntuación del EQ-5D-5L
    - Parámetros de exposición medios e individuales de BLU-263 pronosticados en pacientes (Cmáx, AUC0-24 y Cmín).
    - Seguridad y tolerabilidad determinadas mediante los AA, los AAG y las variaciones de los parámetros analíticos de seguridad, las constantes vitales y las evaluaciones del ECG.

    Parte 3:
    Variación media de las siguientes mediciones de la carga de mastocitos con respecto al momento basal de BLU-263:
    •Triptasa sérica
    •Fracción del alelo KIT D816V en sangre
    Variación del número de medicamentos concomitantes identificados como mejor tratamiento de apoyo con respecto al momento basal.
    Variación media de las puntuaciones de síntomas individuales del FES-MSPA con respecto al momento basal
    Variación media de la puntuación del síntoma principal del FES-MSPA con respecto al momento basal
    Tiempo hasta lograr una reducción del 30 % en
    las puntuaciones TSS, GSS, SSS y en la puntuación agrupada de síntomas neurocognitivos del FES-MSPA desde la primera dosis de BLU-263 en los pacientes que logran dicha reducción durante el tratamiento con BLU-263 o antes de 1 año
    Variación media de las siguientes mediciones entre el momento basal y la semana 25:
    •Puntuación MC-QoL
    •Puntuación PGI-S
    •Puntuación del SF-12
    •Puntuación del EQ-5D-5L
    E.5.2.1Timepoint(s) of evaluation of this end point
    Part 1 - baseline to week 13;
    Part 2 - baseline to week 25;
    Part 3 - ongoing basis
    Parte 1 - entre el momento basal y la semana 13;
    Parte 2 - entre el momento basal y la semana 25;
    Parte 3 - de forma contínua
    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 Yes
    E.6.10Pharmacogenetic No
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic No
    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) Yes
    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 No
    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 trial4
    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 concerned3
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA45
    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
    Australia
    United States
    Austria
    Belgium
    France
    Germany
    Italy
    Netherlands
    Portugal
    Spain
    Switzerland
    United Kingdom
    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
    Ultima visita del último paciente
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years7
    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 years7
    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 Yes
    F.1.1Number of subjects for this age range: 3
    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) Yes
    F.1.1.6.1Number of subjects for this age range: 3
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 383
    F.1.3Elderly (>=65 years) Yes
    F.1.3.1Number of subjects for this age range: 17
    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 Yes
    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 No
    F.4 Planned number of subjects to be included
    F.4.1In the member state15
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 320
    F.4.2.2In the whole clinical trial 403
    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)
    None
    Ninguno
    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 Decision2021-10-22
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2021-10-15
    P. End of Trial
    P.End of Trial StatusOngoing
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