E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Chorea movements associated with Huntington's Disease |
Movimientos coreicos asociados a enfermedad de Huntington |
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E.1.1.1 | Medical condition in easily understood language |
Chorea movements associated with Huntington's Disease |
Movimientos coreicos asociados a enfermedad de Huntington |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10020469 |
E.1.2 | Term | Huntington's chorea |
E.1.2 | System Organ Class | 100000004850 |
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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 determine wheter SOM3355 reduces chorea movements associated with Huntington's Disease. |
Determinar si SOM3355 reduce los movimientos coreicos asociados a enfermedad de Huntington |
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E.2.2 | Secondary objectives of the trial |
- Improvement based on Clinical Global Impression of Change (CGIC), on Patient Global Impression of Change (PGIC) as well as Total Functional Capacity (TFC), Functional Assessment, Gait Score and Total Motor Score (TMS) of the Unified Huntington's Disease Rating Scale (UHDRS). - Suicide severity assessment based on Columbia’s Suicide Severity Rating Scale (C-SSRS). - Safety when the drug is administered to HD patients, with special attention to blood pressure (BP) and cardiac function. |
- Mejoría basada en las escalas de Impresión Global de Cambio Clínica (CGIC) e Impresión Global de Cambio del Paciente (PGIC), así como en la Capacidad Funcional Total (TFC), Evaluación Funcional, Puntuación de la marcha y Puntuación Motora Total (TMS) de la Escala de Evaluación Unificada de la Enfermedad de Huntington (UHDRS). - Evaluación de la gravedad del suicidio basada en la Escala de Clasificación de la Severidad del Suicidio de Columbia (C-SSRS). - Seguridad cuando el fármaco se administra a pacientes con EH, con atención especial a la presión sanguínea y la función cardiaca. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Subject is at least 18 years of age at time of consent. - Diagnosis of HD definite by a movement disorders expert confirmed by a number of HTT gene CAG repeats equal or greater than 36. - Female of child bearing potential and non-vasectomized male agree to practice appropriate methods of birth control. - Ability to walk independently or with minimal assistance. - UHDRS TMC Score equal or greater than 8. - UHDRS TFC equal or greater than 4. - Subject has provided written informed consent or through his/her legally authorized representative. |
- Tener al menos 18 años de edad en el momento del consentimiento. - Diagnóstico de la Enfermedad de Huntington (EH) definido por un experto en transtornos del movimiento y confirmado por un número de repeticiones CAG del gen HTT igual o superior a 36. - Las mujeres potencialmente fértiles y los hombres no vasectomizados aceptan utilizar métodos anticonceptivos apropiados. - Capacidad de caminar de forma independiente o con asistencia mínima. - Puntuación de Corea Total Máxima (TMC) de la Escala de Evaluación Unificada de la Enfermedad de Huntington (UHDRS) igual o superior a 8. - Capacidad Funcional Total (TFC) de la UHDRS igual o superior a 4. - El sujeto ha proporcionado su consentimiento informado (CI) por escrito o por medio de su representante legal autorizado. |
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E.4 | Principal exclusion criteria |
- Onset of HD symptoms prior to age 18 (Juvenile forms of HD). - Non-ambulatory patients. - A past medical history of clinically significant electrocardiogram (ECG) abnormalities or a family history (grandparents, parents and siblings) of a prolonged QT-interval syndrome. - Pregnant or breastfeeding female patients, including those planning to conceive during the period of the trial. - Patients with psychiatric symptoms, or other impairments, that would interfere with their full compliance with the Investigator instructions and testing, unless there is an identified caregiver to support the patient. - Any surgical or medical condition which might significantly alter the absorption, distribution, metabolism, or excretion of drugs, or which may jeopardize the subject in case of participation in the study. The Investigator should make this determination in consideration of the subject’s medical history and/or clinical laboratory test results at screening and baseline. - Known allergy/sensitivity/intolerance to the study drugs or their excipients. - Any significant laboratory results which, in the Investigator’s opinion, would not be compatible with study participation or represent a risk for the subject while in the study. - Prescribed anti-hypertensive medication, tetrabenazine, deutetrabenazine or valbenazine within 15 days prior starting the investigational treatment. - Excluded concomitant medications: Any Anti-hypertensive medication; Tetrabenazine, deutetrabenazine or valbenazine; All typical neuroleptics; All MAO inhibitors. - Subject has a history of alcohol or substance abuse in the previous 12 months. - Patients with diabetic ketoacidosis or metabolic acidosis. - Patients with cardiogenic shock, congestive heart failure, pulmonary hypertension due to right-sided heart failure, severe sinus bradycardia, atrioventricular block (grades II and III) or sinoatrial block. - Subject has participated in an investigational drug or device trial within 30 days prior starting the investigational treatment. |
- Inicio de los síntomas de la enfermedad de Huntington antes de los 18 años (formas juveniles de EH). - Pacientes no ambulatorios. - Antecedentes clínicos de anomalías del electrocardiograma (ECG) clínicamente significativas o antecedentes familiares (abuelos, padres y hermanos) de síndrome de intervalo QT prolongado. - Mujeres embarazadas o lactantes, incluyendo aquellas que planean concebir durante el período del ensayo. - Pacientes con síntomas psiquiátricos u otros impedimentos que interfieran con su total cumplimientos de las instrucciones y pruebas del investigador, a menos que el paciente disponga de un cuidador identificado que le pueda ayudar. - Cualquier condición quirúrgica o médica que pueda alterar significativamente la absorción, distribución, metabolismo o excreción de fármacos, o que pueda poner en peligro al sujeto en caso de participar en el estudio. Para esto, el investigador deberá tener en cuenta el historial médico del sujeto y/o los resultados de las pruebas de laboratorio clínico realizadas durante el proceso de selección del sujeto a incluir. - Alergia, sensibilidad o intolerancia conocida al fármaco de estudio o a sus excipientes. -Cualquier resultado de laboratorio significativo que, a juicio del investigador, no sea compatible con la participación en el estudio o represente un riesgo para el sujeto durante el estudio. - Medicamento antihipertensivo, tetrabenazina, deutetrabenazina o valbenazina prescritos dentro de los 15 días previos al inicio del tratamiento de investigación. - Medicamentos concomitantes excluidos: Cualquier medicamento antihipertensivo; Tetrabenazina, deutetrabenazina o valbenazina; Todos los neurolépticos típicos; Todos los inhibidores de monoamino oxidasas (MAO). - Sujeto con antecedentes de abuso de alcohol o sustancias en los últimos 12 meses. - Pacientes con cetoacidosis diabética o acidosis metabólica. - Pacientes con shock cardiogénico, insuficiencia cardiaca congestiva, hipertensión pulmonar por insuficiencia cardiaca derecha, bradicardia sinusal severa, bloqueo auriculoventricular (grados II y III) o bloqueo sinoauricular. - El sujeto ha participado en un ensayo de cualquier fármaco o dispositivo en investigación dentro de los 30 días previos al inicio del tratamiento de investigación. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Improvement in any active drug period in TMC Score of at least 2 points compared with placebo period. |
Mejoría en cualquier período de fármaco activo en la puntuación de la Corea Total Máxima (TMC) de al menos 2 puntos en comparación con el período de placebo. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
At the end of study treatment. |
Al final del tratamiento del estudio. |
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E.5.2 | Secondary end point(s) |
- Clinical Global Impression of Change (CGIC) scale. - Patient Global Impression of Change (PGIC) scale. - Total Functional Capacity (TFC) of the UHDRS. - Functional Assessment of the UHDRS. - Gait score of the UHDRS. - Total Motor Score (TMS) of the UHDRS. - Columbia Suicide Severity Rating Scale (C-SSRS) - Safety: The maximum grade for each type of adverse event (AE) will be recorded for each subject, and frequency tables will be presented and reviewed to determine patterns. Additionally, the relationship of the AE to the study treatment will be taken into consideration. The frequency of AE as hypotension and cardiovascular events will be specifically analyzed. |
- Escala de Impresión Global de Cambio Clínica (CGIC) - Escala de Impresión Global de Cambio del Paciente (PGIC) - Capacidad Funcional Total (TFC) de la UHDRS - Evaluación Funcional de la UHDRS - Puntuación de la marcha de la UHDRS - Puntuación Motora Total (TMS) de la UHDRS - Escala de Clasificación de Severidad del Suicidio de Columbia (C-SSRR) - Seguridad: Se registrará para cada sujeto el grado máximo de cada tipo de acontecimiento adverso (AA), y se presentarán y revisarán las tablas de frecuencia para determinar los patrones. Además, se tendrá en cuenta la relación de los AA con el tratamiento de estudio, y se analizarán especificamente la frecuencia de AA como hipotensión y efectos cardiovasculares |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
At the end of the study. |
Al final del estudio. |
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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 | No |
E.6.7 | Pharmacodynamic | No |
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 | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
Escalada de dosis |
Dose scaling |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
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 | 4 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
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 |
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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 | |
E.8.9.1 | In the Member State concerned months | 9 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial months | 9 |