E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Urea Cycle Disorders (UCDs) |
trastornos del ciclo de la urea (TCU) |
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E.1.1.1 | Medical condition in easily understood language |
Genetic disease that affects how the body gets rid of waste from excess protein in the diet |
Enfermedad genética que afecta la manera cómo el cuerpo se deshace de los residuos de exceso de proteína en la dieta |
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E.1.1.2 | Therapeutic area | Body processes [G] - Metabolic Phenomena [G03] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10013373 |
E.1.2 | Term | Disorders of urea cycle metabolism |
E.1.2 | System Organ Class | 200000003094 |
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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 assess the safety, tolerability, pharmacokinetics (PK) and ammonia control of RAVICTI and NaPBA in UCD subjects not currently treated with phenylacetic acid (also referred to as phenylacetate; PAA) prodrugs. |
Evaluar la seguridad, la tolerabilidad, la farmacocinética (FC) y el control del amonio con RAVICTI y con NaPBA en sujetos con TCU que actualmente no reciben tratamiento con profármacos de ácido fenilacético (también conocido como fenilacetato (phenylacetate, PAA). |
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E.2.2 | Secondary objectives of the trial |
Not applicable |
No se aplica |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
-Signed informed consent given by the subject or the subject?s parent/legal guardian for those under 18 years of age or the age of consent by local regulation -Male and female subjects with a suspected or confirmed UCD diagnosis of any subtype, except NAGS deficiency Suspected diagnosis is defined as having experienced a HAC or a documented high ammonia of ≥ 100 µmol/L Confirmed diagnosis is determined via enzymatic, biochemical, or genetic testing - Requires nitrogen-binding agents according to the judgment of the Investigator ≥2 months of age and older -All females of childbearing potential and all sexually active males must agree to use an acceptable method of contraception from signing the informed consent throughout the duration of the study and for 30 days after the last dose of study drug. Appropriate contraceptive methods include hormonal contraceptives (oral, injected, implanted, or transdermal), tubal ligation, intrauterine device, hysterectomy vasectomy, or double barrier methods. Abstinence is an acceptable form of birth control, though appropriate contraception must be used if the subject becomes sexually active. |
Criterios de inclusión: - Consentimiento informado firmado por el sujeto o los padres/tutores legales del sujeto para los menores de 18 años o de la edad estipulada de consentimiento por la normativa local. -Hombres y mujeres con una sospecha o confirmación de diagnóstico de cualquier subtipo de TCU excepto deficiencia de N-acetilglutamato sintetasa La sospecha del diagnóstico se define como haber experimentado una crisis de hiperamonemia o un nivel alto de amoniaco ≥ 100 μmol/l El diagnóstico confirmado se determina mediante análisis enzimáticos, bioquímicos o genéticos -Requiere agentes aglutinantes de nitrógeno a criterio del investigador 2 meses de edad o más - Todas las mujeres en edad fértil y todos los hombres que tengan relaciones sexuales deben aceptar usar un método anticonceptivo aceptable durante todo el estudio. Entre los métodos anticonceptivos adecuados se incluyen anticonceptivos hormonales (orales, inyectados, implantados o transdérmicos), ligadura de trompas, dispositivos intrauterinos, histerectomías, vasectomías o métodos de doble barrera. La abstinencia es una forma aceptable de anticoncepción, aunque debe usarse un método anticonceptivo adecuado si el sujeto empieza a tener relaciones sexuales |
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E.4 | Principal exclusion criteria |
- Subject has received chronic treatment with an oral phenylbutyrate (RAVICTI, NaPBA, Pheburane, or other) longer than 14 days consecutive within one year prior to enrollment - Temporary use of oral PBA for acute management of a hyperammonemic crisis in the past is acceptable. - Any concomitant illness (e.g., malabsorption or clinically significant liver or bowel disease) which would preclude the subject's safe participation, as judged by the Investigator - Have undergone liver transplantation, including hepatocellular transplant -Subjects on NaBz at Baseline will be excluded if they are viewed by the Investigator as being unable to undergo NaBz transition to a PAA prodrug during the Initial Treatment Period -Known hypersensitivity to PBA or any excipients of the NaPBA/PBA formulations - Pregnant or breast-feeding patients. Women of childbearing potential must have a pregnancy test performed at the Baseline Visit prior to the start of study drug. |
Criterios de exclusión: - El sujeto ha recibido tratamiento crónico con fenilbutirato oral (RAVICTI, NaPBA, Pheburano u otro)durante más de 14 días dentro del año anterior a la inscripción -Es aceptable el uso temporal de NaPBA para la gestión aguda de crisis de hiperamonemia en el pasado - Cualquier enfermedad concomitante (p. ej., hipoabsorción o afección intestinal o hepática clínicamente significativa) que pudiera impedir la participación segura del sujeto, a criterio del investigador - Haberse sometido a un trasplante de hígado, incluido un trasplante hepatocelular - Los sujetos en tratamiento con NaBz en el inicio se excluirán si el investigador considera que no pueden someterse a la transición de NaBz a un profármaco de PAA durante el periodo de tratamiento inicial. ? Pacientes embarazadas o en período de lactancia. Debe realizarse una prueba de embarazo a las mujeres que puedan tener hijos en la visita inicial antes de comenzar el medicamento del estudio |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint of this study is the Rate of Treatment Success: Efficacy |
El objetivo primario de este estudio es la tasa de éxito del tratamiento: Eficacia |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
The efficacy endpoint will be evaluated during the Initial Treatment Period |
Los criterios de valoración de la eficacia se evaluarán durante Período inicial de tratamiento |
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E.5.2 | Secondary end point(s) |
1) Efficacy a) Initial Treatment Period Endpoints (RAVICTI vs NaPBA) • Drug discontinuation due to any reason b) Transition, Maintenance, and Safety Extension Periods (RAVICTI) • Control of plasma ammonia • Annualized rate of HAC 2) Safety and Tolerability • Assessment of AEs • Standard clinical laboratory tests • Amino acid panel • Rate of drug discontinuation due to AEs 3) Clinical Outcome Assessments • Rate of treatment success in the Initial Treatment Period • Subject preference for study drug (Arm 2 after exposure to both RAVICTI and NaPBA) • Palatability of study drug (Hedonic Scale) • Changes in CGI scales (Investigator) • Neuropsychological assessments: CBCL or ABCL or ASR • EQ-5D-5L health status quality of life assessment |
1) Eficacia a) Valoracion del Período inicial de tratamiento (RAVICTI vs NaPBA) • Suspensión del fármaco debido a cualquier razón b) Períodos de Extensión, Transición, Mantenimiento y Seguridad (RAVICTI) • Control del amoníaco plasmático • Índice anual de CHA 2) Criterios de valoración de seguridad y tolerabilidad •Evaluación de AA •Análisis clínicos habituales •Perfil de aminoácidos •Índice de suspensión del fármaco debido a AA 3)Evaluaciones de Resultados Clínicos •Índice de éxito del tratamiento en el período de tratamiento inicial •Preferencia por un fármaco (Rama 2 después de la exposición a ambos RAVICTI y NaPBA) •Sabor agradable del medicamento del estudio (escala hedónica) •Cambios en las escalas de impresión clínica global (Clinical Global Impression, CGI) (investigador) •Evaluaciones neurofisiológicas: Lista de comprobación de comportamiento infantil (Child Behavior Checklist, CBCL) o Lista de comprobación de comportamiento del adulto (Adult Behavior Checklist, ABCL)/Autoinforme del adulto (Adult Self-Report, ASR) •Evaluación de calidad de vida y estado de salud EQ-5D-5L |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
a) Initial Treatment Period (RAVICTI vs NaPBA) • Drug discontinuation due to any reason • Amino acid panel • Standard clinical laboratory tests • Assessment of AEs • Rate of Treatment Success • EQ-5D-5L health status quality of life assessment b) Transition, Maintenance, and Safety Extension Periods (RAVICTI) • Control of plasma ammonia • Annualized rate of HAC • Amino acid panel • Standard clinical laboratory tests • Neuropsychological assessments: CBCL or ABCL or ASR • EQ-5D-5L health status quality of life assessment • Subject preference for study drug (Arm 2 after exposure to both RAVICTI and NaPBA) • Assessment of AEs • Changes in CGI scales (Investigator) • Palatability of study drug (Hedonic Scale) • Rate of drug discontinuation due to AEs |
a) Período inicial de tratamiento • Suspensión del fármaco debido a cualquier razón •Perfil de aminoácidos •Análisis clínicos habituales •Evaluación de AA •Índice de éxito del tratamiento •Evaluación de calidad de vida y estado de salud EQ-5D-5L b) Períodos de Extensión, Transición, Mantenimiento y Seguridad (RAVICTI) • Control del amoníaco plasmático • Índice anual de CHA •Perfil de aminoácidos •Análisis clínicos habituales •Evaluaciones neurofisiológicas:CBCL o ABCL o ASR •Evaluación de calidad de vida y estado de salud EQ-5D-5L •Preferencia por un fármaco (Rama 2 después de la exposición a ambos RAVICTI y NaPBA) •Evaluación de AA •Cambios en las escalas de ICG (investigador) Sabor agradable del medicamento (escala hedónica) Índice de suspensión del fármaco debido a AA |
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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 | 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) | 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 | Yes |
E.8.1.1 | Randomised | Yes |
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 | Yes |
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) | Yes |
E.8.2.2 | Placebo | No |
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 | 3 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 13 |
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 |
Austria |
Belgium |
Italy |
Spain |
Switzerland |
United Kingdom |
United States |
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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 |
LVLS - Ultima visita del ultimo 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 | 4 |
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 | 4 |
E.8.9.2 | In all countries concerned by the trial days | 0 |