E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Hypereosinophilic syndrome (HES) |
Síndrome hipereosinofílico (HES) |
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E.1.1.1 | Medical condition in easily understood language |
Hypereosinophilic syndrome (HES) |
Síndrome hipereosinofílico (HES) |
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E.1.1.2 | Therapeutic area | Diseases [C] - Blood and lymphatic diseases [C15] |
MedDRA Classification |
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 | 10048643 |
E.1.2 | Term | Hypereosinophilic syndrome |
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 |
To describe the long-term safety profile of mepolizumab in participants with HES who took part in Study 200622. |
Describir el perfil de seguridad a largo plazo de mepolizumab en sujetos con HES que participaron en el Estudio 200622. |
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E.2.2 | Secondary objectives of the trial |
Not Applicable |
No aplicable |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Participants are eligible to be included in the study only if all of the following criteria apply: Study 200622 requirements 1. Age 12 years and older participants who were enrolled in Study 200622. To be considered for Study 205203, Study 200622 participants must have completed 32-week assessments since randomization: (i) Completion of the 32-week treatment period in Study 200622 OR (ii) If the participant was withdrawn from study treatment prematurely during the 200622 study, but continued in the study per protocol(including HES flare related assessments) until 32 weeks from randomization. Sex 2. Male or female Female participants: A female participant who meets one of the following conditions: (i) Not a woman of childbearing potential (WOCBP) as defined in Appendix 5 OR (ii) A WOCBP who agrees to follow the contraceptive guidance in Appendix 5 at least 30 days prior to the first dose of study treatment and until 16 weeks after the last dose of study treatment.
Positive benefit: risk ratio 3. The treating physician must confirm a positive benefit/risk ratio. The anticipated clinical benefit from mepolizumab must outweigh any potential safety or tolerability risk in Study 205203.
Informed consent 4. Capable of giving signed informed consent as described in Appendix 3 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol. |
El paciente podrá participar en este estudio únicamente si satisface todos los criterios siguientes:
Requerimientos del estudio 200622: 1. 12 o más años de edad cuando fueron aleatorizados en el estudio 200622. Para entrar en el Estudio 205203, los pacientes del Estudio 200622 tienen que haber completado las evaluaciones del periodo de 32 semanas desde aleatorización: (i) Periodo de 32 semanas de tratamiento en el Estudio 200622 O (ii) Si el paciente suspendió prematuramente el tratamiento en el estudio 200622, pero continuó en el estudio conforme al protocolo (incluidas las evaluaciones relacionadas con los brotes de HES) hasta la semana 32 desde la aleatorización.
Sexo: 2. Varón o mujer Mujeres que cumplan al menos una de las condiciones siguientes: (i) Sin capacidad de procrear (MSCP), como se define en el Apendice 5. O (ii) Son capacidad de procrear que aceptan seguir los métodos anticonceptivos del Apéndice 5 durante al menos 30 días antes de la primera dosis de la medicación del estudio y hasta 16 semanas después de la última dosis de medicación del estudio. Ratio beneficio-riesgo positivo 3. El medico tratante tiene que confirmar un coeficiente beneficio-riesgo positivo. El beneficio clínico esperado con mepolizumab tiene que compensar cualquier riesgo potencial de seguridad o tolerabilidad en el Estudio 205203. Consentimiento Informado: 4. Capacidad de otorgar el consentimiento/asentimiento informado firmado, tal como se describe en el Apéndice 3, lo que incluye el cumplimiento de los requisitos y restricciones mencionados en el documento de consentimiento y en este protocolo. |
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E.4 | Principal exclusion criteria |
Participants are excluded from the study if any of the following criteria apply: Medical conditions 1. Participants with any history of hypersensitivity to any monoclonal antibody (including mepolizumab) 2. Participants with current malignancy or malignancy that developed during Study 200622. NOTE: Participants who had localized localized carcinoma (i.e., basal or squamous cell) of the skin which was resected for cure will not be excluded. 3. Participant who is pregnant or breastfeeding. NOTE: Participants should not be considered for continued treatment if they plan to become pregnant during the course of treatment with mepolizumab. 4. Participant who has other clinically significant medical conditions uncontrolled with SoC therapy not associated with HES, e.g., unstable liver disease, uncontrolled cardiovascular disease, ongoing active infectious disease. NOTE: -Participants with recent parasitic (helminth) infections will be excluded from the study or required to be adequately treated for helminth infections before initiation of mepolizumab. 5. Participants with QTc >450 msec or QTc > 480 msec in participants with bundle branch block based on local EGC reading NOTES: -The QTc is the QT interval corrected for heart rate according to Bazett’s formula (QTcB), Fridericia’s formula (QTcF), and/or another method. It is either machine-read or manually over-read. - The specific formula used to determine eligibility and discontinuation for an individual participant should be determined prior to initiation of the study. In other words, several different formulas cannot be used to calculate the QTc for an individual participant and then the lowest QTc value used to include or discontinue the participant from the trial.
6. Liver abnormality/disease: - Participants who discontinue study treatment based on liver chemistry stopping criteria during Study 200622 -Current active liver or biliary disease (with the exception of Gilbert’s syndrome or asymptomatic gallstones or otherwise stable chronic liver disease per investigator assessment). NOTE: Stable chronic liver disease should generally be defined by the absence of ascites, encephalopathy, coagulopathy, hypoalbuminaemia, oesophageal or gastric varices, or persistent jaundice, or cirrhosis.
Prior/concurrent clinical study experience
7. Other investigational product/clinical study: -Participants who have received treatment with an investigational agent (biologic or non-biologic) within the past 30 days or 5 drug half-lives whichever is longer, prior to the first dose, other than Study 200622 study treatment. The term “investigational” applies to any drug not approved for sale for the disease/indication to treat in the country in which it is being used or investigational formulations of marketed products -Participants who are currently participating in any other interventional clinical study
8. Participant had an adverse event (serious or non-serious) considered related to study treatment while participating in Study 200622 which resulted in permanent withdrawal of study treatment. |
No podrán participar en el estudio los pacientes que cumplan cualquiera de los criterios siguientes: Condiciones médicas: 1. Pacientes con cualquier antecedente de hipersensibilidad a cualquier anticuerpo monoclonal (incluido mepolizumab). 2. Pacientes con neoplasia maligna o neoplasia maligna que se desarrolló durante el Estudio 200622. NOTA: No se excluirá a los pacientes con carcinoma localizado (es decir, basocelular o espinocelular) de la piel que se haya resecado para curarlo. 3. Mujeres embarazas o en periodo de lactancia. NOTA: No serán elegibles para recibir tratamiento continuado aquellas mujeres que planeen quedarse embarazadas durante el periodo de tratamiento con mepolizumab. 4. Pacientes con otras afecciones concurrentes clínicamente significativas, mal controladas con corticosteroides orales, no relacionadas con el HES, como por ejemplo, enfermedad hepática inestable, enfermedad cardiovascular descontrolada, infecciones activas en curso. NOTA: Los pacientes con infestación parasitaria (por helmintos) reciente quedarán excluidos del estudio o tendrán que ser tratados de forma adecuada de la infestación por helmintos antes de iniciar mepolizumab. 5. Pacientes con QTc >450 ms o QTc >480 ms en pacientes con bloqueo de rama en base a la lectura local del ECG. NOTAS: - El QTc es el intervalo QT corregido por la frecuencia cardíaca según la fórmula de Bazett (QTcB), la fórmula de Fridericia (QTcF), y/u otro método. Puede ser calculado por la máquina o leído manualmente. - La fórmula específica para determinar la elegibilidad y discontinuación de cada sujeto, se tiene que definir antes del inicio del estudio. Es decir, no se pueden utilizar varias fórmulas diferentes para calcular el QTc de cada paciente para después usar el valor más bajo de QTc para incluir o discontinuar a un paciente en el estudio. 6. Alteración/enfermedad hepática: - Pacientes que interrumpen la medicación del estudio en base al criterio de interrupción por bioquímica hepática durante el Estudio 200622. - Enfermadad hepática o biliar activa actual (excepto el síndrome de Gilbert o la litiasis biliar asintomática o una hepatopatía crónica por lo demás estable según la evaluación del investigador). NOTA: Por lo general, la hepatopatía crónica estable deberá definirse por la ausencia de ascitis, encefalopatía, coagulopatía, hipoalbuminemia, varices esofágicas o gástricas, o ictericia persistente o cirrosis. Experiencia clínica de estudios previos/concurrentes: 7. Otro producto en investigación/estudio clínico: - Pacientes que hayan recibido tratamiento con un fármaco en investigación (biológico o no biológico) diferente del tratamiento del estudio 200622 en los 30 días previos o 5 semividas, lo que sea más largo, antes de la primera dosis. El término “en investigación” se aplica a todo medicamento no aprobado para la venta en el país en el que se utiliza o formulaciones experimentales de productos comercializados. - Pacientes que estén participando actualmente en otro estudio clínico de intervención. 8. Pacientes que presenten un efecto adverso (grave o no) que se considere relacionado con la medicación del estudio mientras participen en el Estudio 200622, y que lleve interrupción permanente del tratamiento del estudio. |
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E.5 End points |
E.5.1 | Primary end point(s) |
- Adverse events (AEs) [serious and non- serious] - Anti-drug antibody |
- Acontecimientos adversos (AA) [graves y no graves] - Anticuerpo antifármaco |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
During 20 weeks starting randomization |
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E.5.2 | Secondary end point(s) |
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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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
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
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 7 |
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 |
Argentina |
Brazil |
Mexico |
Russian Federation |
United States |
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E.8.7 | Trial 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
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LVLS |
Última visita del último paciente. |
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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 | 2 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 0 |
E.8.9.2 | In all countries concerned by the trial days | 0 |