E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Thrombotic microangiopathies following haematopoietic stem cell transplant |
Microangiopatías trombóticas tras un trasplante de células madre hematopoyéticas |
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E.1.1.1 | Medical condition in easily understood language |
Thrombotic microangiopathies following haematopoietic stem cell transplant |
Microangiopatías trombóticas tras un trasplante de células madre hematopoyéticas |
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E.1.1.2 | Therapeutic area | Diseases [C] - Immune System Diseases [C20] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | HLGT |
E.1.2 | Classification code | 10064477 |
E.1.2 | Term | Coagulopathies and bleeding diatheses (excl thrombocytopenic) |
E.1.2 | System Organ Class | 10005329 - Blood and lymphatic system disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10043645 |
E.1.2 | Term | Thrombotic microangiopathy |
E.1.2 | System Organ Class | 10005329 - Blood and lymphatic system disorders |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | HLT |
E.1.2 | Classification code | 10053567 |
E.1.2 | Term | Coagulopathies |
E.1.2 | System Organ Class | 10005329 - Blood and lymphatic system disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Describe the 100-day survival rate following high risk HSCT-TMA diagnosis. |
Describir la tasa de supervivencia a los 100 días tras el diagnóstico de HSCT-TMA de alto riesgo. |
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E.2.2 | Secondary objectives of the trial |
- Evaluate the safety and tolerability of intravenous (IV) administration of narsoplimab. - Describe the efficacy of narsoplimab by responder rate; survival at 52 weeks; and mean, median, and overall survival rates. - Evaluate peak and trough PK of IV narsoplimab. - Immunogenicity will be evaluated. - Anti-drug antibody (ADA) responses will be summarized by treatment group and will be evaluated. |
- Evaluar la seguridad y tolerabilidad de la administración intravenosa (intravenous, IV) de narsoplimab. - Describir la eficacia de narsoplimab mediante la tasa de respondedores; la supervivencia a las 52 semanas; y las tasas de supervivencia media, mediana y global. - Evaluar la PK máxima y mínima de narsoplimab IV. - Evaluar la inmunogenicidad. - Resumir y evaluar las respuestas de producción de anticuerpos antimedicamento (anti-drug antibody, ADA) por grupo de tratamiento. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Age at least 28 days and less than 18 years prior to informed consent (Visit 0). 2. Have informed consent from at least one parent or legal guardian as required by local law and regulation. Patient informed consent will be required if the patient has reached the local legal age of majority. 3. Assent from patients as required by local law and regulation. 4. Have received an allogeneic haematopoietic stem cell transplant for the treatment of non-malignant or malignant disease. All donor cell sources are allowed (i.e., matched, mismatched, and haploidentical; related and unrelated; bone marrow, peripheral blood stem cells, and umbilical cord blood). 5. Have a diagnosis of HSCT-TMA defined as having both of the following: -Platelet count < 50,000/µL or a decrease in platelet count > 50% from the highest value obtained following transplant. -Evidence of microangiopathic hemolysis (presence of schistocytes, serum lactate dehydrogenase [LDH] > upper limit of normal ([ULN], or haptoglobin < lower limit of normal [LLN]) 6. Have at least one of the following HSCT-TMA high-risk criteria: - HSCT-TMA persistence > 2 weeks following modification of calcineurin inhibitors or sirolimus OR - Have evidence of high-risk HSCT-TMA defined as at least one of the following: - Spot protein/creatinine ratio > 2 mg/mg - Serum creatinine > 1.5 x the creatinine level prior to TMA development - Biopsy-proven gastrointestinal TMA - TMA-related neurological abnormality (e.g., confusion, stroke, transient ischemic attack [TIA] or seizures) - Pericardial or pleural effusion without alternative explanation - Pulmonary hypertension without alternative explanation - Have Grade III or Grade IV graft-versus-host disease (GVHD) or, in the opinion of the Investigator, risk for development of Grade III or Grade IV GVHD if immunosuppression were to be modified - Have elevated serum C5b-9 (> 244 ng/mL) 7. If sexually active and of childbearing potential, must agree to practice a highly effective method of birth control throughout the study drug treatment and for at least 12 weeks after the last dose of study drug, such method of birth control defined as one that results in a low failure rate (i.e., less than 1% per year) when used consistently and correctly, such as implants, injectables, combined oral contraceptives, some intrauterine devices, sexual abstinence (abstinence is acceptable when it is in line with the patient’s preferred and usual lifestyle and is defined as complete abstinence of sexual intercourse, not periodic abstinence or withdrawal), or vasectomized partner. 8. Male patients must be willing to avoid fathering children for at least 12 weeks following the last dose of study medication. |
1. Edad mínima de 28 días y menor de 18 años antes del consentimiento informado (visita 0). 2. Contar con el consentimiento informado de al menos uno de los padres o tutores legales, tal y como exijan las leyes y normativas locales. Se requerirá el consentimiento informado del paciente si este ha alcanzado la mayoría de edad legal local. 3. Asentimiento de los pacientes, tal como exijan las leyes y reglamentos locales. 4. Haber recibido un trasplante alogénico de células madre hematopoyéticas para el tratamiento de una enfermedad no maligna o maligna. Se permiten todas las fuentes de células de donantes (es decir, compatibles, no compatibles y haploidénticas; emparentadas y no emparentadas; médula ósea, células madre de sangre periférica y sangre del cordón umbilical). 5. Tener un diagnóstico de HSCT-TMA, definido por los dos hechos siguientes: - Recuento de plaquetas <50.000/uL o una disminución del recuento de plaquetas >50% respecto al valor más alto obtenido tras el trasplante. - Evidencia de hemólisis microangiopática (presencia de esquistocitos, lactato deshidrogenasa [LDH] sérica >límite superior de la normalidad ([upper limit of normal, ULN] o haptoglobina <límite inferior de la normalidad [lower limit of normal, LLN]) 6. Tener al menos uno de los siguientes criterios de alto riesgo de HSCT-TMA: - Persistencia de HSCT-TMA >/=2 semanas después de la modificación de los inhibidores de la calcineurina o del sirólimus O BIEN - Tener evidencia de HSCT-TMA de alto riesgo definida como al menos uno de los siguientes hechos: Relación proteína/creatinina en muestra de orina puntual >/= 2 mg/mg Creatinina sérica >1,5 veces el nivel de creatinina previo al desarrollo de la TMA TMA gastrointestinal demostrada por biopsia Anomalía neurológica relacionada con la TMA (por ejemplo, confusión, accidente cerebrovascular, accidente isquémico transitorio [transient ischemic attack, AIT] o convulsiones) Derrame pericárdico o pleural sin explicación alternativa Hipertensión pulmonar sin explicación alternativa Enfermedad de injerto contra huésped (graft-versus-host disease, GVHD) de grado III o IV o, en opinión del investigador, riesgo de desarrollar una GVHD de grado III o IV si se modifica la inmunosupresión C5b-9 sérica elevada (>244 ng/mL) 7. Si es sexualmente activo y tiene capacidad para tener hijos, debe aceptar practicar un método anticonceptivo altamente eficaz durante todo el tratamiento con el fármaco del estudio y durante al menos 12 semanas después de la última dosis del fármaco del estudio; dicho método anticonceptivo se define como aquel cuya tasa de fracaso es baja (es decir, menos del 1% al año) cuando se utiliza de forma sistemática y correcta, como los implantes, los inyectables, los anticonceptivos orales combinados, algunos dispositivos intrauterinos, la abstinencia sexual (la abstinencia es aceptable cuando está en consonancia con el estilo de vida preferido y habitual del paciente y se define como la abstinencia completa de las relaciones sexuales, no la abstinencia periódica o el coito interrumpido), o la pareja vasectomizada. 8. Los pacientes varones deben estar dispuestos a no engendrar hijos durante al menos 12 semanas después de la última dosis de la medicación del estudio. |
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E.4 | Principal exclusion criteria |
1. All treatments for HSCT-TMA are allowed except eculizumab, ravulizumab, and defibrotide within 3 months prior to informed consent, unless failure of therapy can be documented. a. Patients may not be on eculizumab, ravulizumab, or defibrotide for any indication at screening. 2. Have Shiga toxin-producing Escherichia coli haemolytic uraemic syndrome (STEC-HUS). Test results obtained within 28 days prior to informed consent may be used. 3. Have ADAMTS13 activity < 10%. Test results obtained within 28 days prior to informed consent may be used. 4. Have a severe, uncontrolled systemic bacterial or fungal infection requiring antimicrobial therapy (prophylactic antimicrobial therapy administered as standard of care is allowed). 5. Have malignant hypertension (blood pressure [BP] > 99th percentile plus 5 mmHg with bilateral hemorrhages or “cotton-wool” exudates on fundoscopic examination). 6. Due to conditions other than HSCT-TMA, have a poor prognosis with a life expectancy of less than 3 months in the opinion of the Investigator. 7. If pregnant or lactating 8. Have received treatment with an investigational drug or device within 4 weeks of entering study. 9. Have abnormal liver function tests defined as alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 5 times ULN within 28 days prior to informed consent through prior to the first dose. 10. Have a positive test by antigen, antibody, or polymerase chain reaction (PCR) for human immunodeficiency virus (HIV); if negative within 28 days prior to informed consent, the test does not need to be repeated. 11. Patients or their parents or legal guardians are an employee of Omeros, Clinical Research Organization (CRO), an Investigator, a study staff member, or an immediate family member. 12. Have a known hypersensitivity to any constituent of the product. 13. Presence of any condition that the Investigator believes would put the patient at risk. |
1. Se permiten todos los tratamientos para HSCT-TMA, excepto eculizumab, ravulizumab y defibrotida, en los 3 meses anteriores al consentimiento informado, a menos que se pueda documentar el fracaso del tratamiento. a.En la selección, los pacientes no podrán estar recibiendo eculizumab, ravulizumab o defibrotida por ninguna indicación. 2. Tener síndrome urémico hemolítico por Escherichia coli productora de la toxina de Shiga (Shiga toxin-producing Escherichia coli haemolytic uraemic syndrome, STEC-HUS). Podrán utilizarse los resultados de pruebas efectuadas en el plazo de los 28 días anteriores al consentimiento informado. 3. Tener actividad de ADAMTS13 <10%. Podrán utilizarse los resultados de pruebas efectuadas en el plazo de los 28 días anteriores al consentimiento informado 4. Tener una infección bacteriana o fúngica sistémica grave y no controlada que requiera tratamiento antimicrobiano (se permite el tratamiento antimicrobiano profiláctico administrado como tratamiento habitual). 5. Tener hipertensión maligna (presión arterial [blood pressure, BP] > percentil del 99% más 5 mm Hg con hemorragias bilaterales o exudados “algodonosos” en el examen fundoscópico). 6. Debido a enfermedades distintas a la HSCT-TMA, tener un mal pronóstico con una esperanza de vida inferior a 3 meses en opinión del investigador. 7. Estar embarazada o en período de lactancia. 8. Haber recibido tratamiento con un fármaco o dispositivo en investigación en las 4 semanas anteriores a la entrada en el estudio. 9. Tener pruebas de función hepática anormales, definidas como alanina aminotransferasa (alanine aminotransferase, ALT) o aspartato aminotransferasa (aspartate aminotransferase, AST) >5 veces el ULN, en el plazo de los 28 días anteriores al consentimiento informado o antes de la primera dosis. 10. Tener una prueba positiva por antígeno, anticuerpo o reacción en cadena de la polimerasa (polymerase chain reaction, PCR) para el virus de la inmunodeficiencia humana (human immunodeficiency virus, VIH); no será necesario repetirla en caso de negatividad en el plazo de los 28 días anteriores al consentimiento informado. 11. Ser (el paciente o sus padres o tutores legales) empleado de Omeros, Organización de Investigación Clínica (Clinical Research Organization, CRO), un investigador, un miembro del personal del estudio o un familiar directo. 12. Tener hipersensibilidad conocida a cualquier componente del producto. 13. Presencia de cualquier enfermedad que el investigador considere que podría poner en riesgo al paciente. |
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E.5 End points |
E.5.1 | Primary end point(s) |
100-day survival rate from date of HSCT-TMA diagnosis |
Tasa de supervivencia a 100 días desde la fecha del diagnóstico de HSCT-TMA |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
- Survival at 52 weeks and median, mean, and overall survival from date of TMA diagnosis - Narsoplimab peak and trough PK and concomitant lectin pathway activation measured by ex vivo assay - Safety will be evaluated by adverse events (AEs) and laboratory measures - Anti-drug antibody response - Responder rate based on clinical response criteria |
- Supervivencia a las 52 semanas y supervivencia mediana, media y global desde la fecha del diagnóstico de TMA - PK máxima y mínima de narsoplimab y activación concomitante de la vía de la lectina medida mediante un ensayo ex vivo - Seguridad evaluada mediante los acontecimientos adversos (adverse events, AE) y las determinaciones de laboratorio - Respuesta de producción de anticuerpos antimedicamento - Tasa de respondedores basada en criterios de respuesta clínica |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 1 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 8 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Israel |
United States |
Poland |
Netherlands |
Spain |
Germany |
Italy |
Hungary |
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E.8.7 | Trial has a data monitoring committee | No |
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
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LVLS |
Última visita del último paciente (LVLS) |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 5 |
E.8.9.1 | In the Member State concerned days | 26 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 7 |
E.8.9.2 | In all countries concerned by the trial days | 11 |