E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Adult patients with HIV-1 infection that present virologic failure to first-line antiretroviral treatment. |
Pacientes adultos con infección crónica por el VIH-1 que presentan fracaso virológico a las primeras líneas de tratamiento antiretroviral. |
|
E.1.1.1 | Medical condition in easily understood language |
Adult patients with HIV-1 infection that present treatment failure. |
Pacientes adultos con infección crónica por el VIH-1 que presentan fracaso del tratamiento antiretroviral. |
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E.1.1.2 | Therapeutic area | Diseases [C] - Virus Diseases [C02] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10020161 |
E.1.2 | Term | HIV infection |
E.1.2 | System Organ Class | 10021881 - Infections and infestations |
|
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To compare the effectiveness of a combination of maraviroc (150mg QD) plus DRV/r (800/100mg QD) versus a standard regimen with three antiretroviral drugs at week 48 of treatment, in patients infected with human immunodeficiency virus (HIV +) with CCR5 tropism that presented virologic failure with first-line antiretroviral treatment |
Comparar la eficacia de maraviroc (150 mg QD) combinado con DRV/r (800/100 mg QD) frente una pauta de tratamiento estándar con 3 fármacos antiretrovirales, en la semana 48 de tratamiento, en pacientes infectados por el virus de la inmunodeficiencia humana (VIH+) con tropismo viral CCR5, que presentan fracaso virológico con las primeras líneas de tratamiento antiretroviral |
|
E.2.2 | Secondary objectives of the trial |
- Effectiveness of both regimens at weeks 12 and 24 of treatment
- Time to treatment failure
- Change in the CD4+ count at weeks 12, 24 and 48 of treatment
- Safety of both regimens
- Cost-effectiveness study of both regimens, defined as the average treatment cost for each patient with undetectable viral load at week 48 (patients with undetectable viral load/total number of patients treated)
- Incidence and type of resistance mutations appeared in those patients with virologic failure
- Pharmacokinetic analysis of darunavir, ritonavir and maraviroc in patients assigned to the experimental group |
- Comparar la eficacia de ambas pautas en las semanas 12 y 24 de tratamiento
- Comparar el tiempo transcurrido hasta el fracaso terapéutico
- Comparar el cambio en el recuento de linfocitos CD4+ en las semanas 12, 24 y 48 de tratamiento
- Comparar la seguridad de ambas pautas
- Comparar el coste-eficacia de ambas pautas, definido como el coste medio del tratamiento por cada paciente con carga viral indetectable en la semana 48 (pacientes con carga viral indetectable/Nº total de pacientes tratados)
- Comparar la incidencia y el tipo de mutaciones de resistencia que aparecen en los pacientes con fracaso virológico
- Análisis farmacocinético del darunavir, ritonavir y maraviroc en los pacientes asignados al grupo experimental |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Adult patients with HIV-1 infection
- Virologic failure, definded as two consecutive HIV RNA levels > 400 cop/ml within 2-6 weeks, when being under stable ART for at least 3 months
- Genotipic resistance to lamivudine/emtricitabine (M184V/I) irrespective of other NRTIs or NNRTIs associated mutations. Patients with current or previous virologic failure to an IP/r based regimen may be included if the number of IPs associated mutations is ? 2 and there are no IPs primary resistances or DRV associated mutations
- CCR5 viral tropism determined by V3 sequencing. The period between the determination of viral tropism and inclusion in the study will be 6 weeks maximum
- Informed consent
- Women without reproductive potential and not breastfeeding.
- Women with reproductive potential if they are not breastfeeding and who meet the following criteria:
* Negative pregnancy test at baseline
* Accept commit to avoid pregnancy until 30 days after the last dose of study drug, by using double barrier method of contraception or abstinence. |
- Pacientes adultos infectados por VIH-1
- Fracaso virológico, definido como ARN VIH > 400 cop/ml en dos determinaciones consecutivas separadas 2-6 semanas, con una pauta de TAR estable durante al menos 3 meses
- Resistencia genotípica a lamivudina/emtricitabina (M184V/I) con o sin mutaciones de resistencia asociadas a otros NRTIs o NNRTIs. Los pacientes con fracaso actual o previo a una pauta basada en IP/r pueden ser incluidos si el número de mutaciones de resistencia asociadas a IPs es ? 2 y no tiene mutaciones de resistencia primarias a IPs ni mutaciones asociadas a DRV
- Tropismo viral CCR5, determinado por secuenciación de V3. El periodo transcurrido entre la determinación del tropismo viral y la inclusión en el estudio será de 6 semanas como máximo.
- Consentimiento informado
- Mujeres sin potencial reproductivo y que no estén lactando.
- Mujeres con potencial reproductivo siempre que no estén lactando y que cumplan los siguientes criterios:
* Prueba de embarazo negativa en la visita basal
* Aceptan comprometerse a evitar quedar embarazadas hasta 30 días después de la última dosis del fármaco del estudio, para lo que utilizarán un método anticonceptivo de doble barrera o abstinencia |
|
E.4 | Principal exclusion criteria |
- AIDS defining event within 48 weeks before starting study
- Current HIV RNA load > 100.000 cop/ml
- Current CD4+ cell count < 100 cel/mm³
- HBV coinfection (HBsAg positive)
- Descompensated liver cirrhosis (Child-Pugh B/C)
- Chronic renal failure (Clearance of creatinine MDRD < 30 ml/min/1,73m2)
- Patients unable to understant the study prtocol or candidates who, in researcher opinion, are not appropiate to be enroled in the study
- Pregnant, lactating or with reproductive potential women, who not commit to avoid pregnancy until 30 days after the last dose of study drug. |
- Evento definitorio de SIDA en las 48 semanas previas
- ARN VIH actual > 100.000 cop/ml
- Cifra actual de Linfocitos CD4+ < 100 cél/mm3
- Coinfección por VHB (HBsAg postivo)
- Cirrosis hepática descompensada (Child-Pugh B/C)
- Insuficiencia renal crónica (Aclaramiento de creatinina MDRD < 30 ml/min/1,73m2)
- Pacientes incapaces de comprender el protocolo de estudio o que, en opinión de los investigadores, no sean candidatos adecuados para participar en un ensayo clínico
- Mujeres en periodo de gestación o lactancia o con potencial reproductivo que no se comprometan a evitar quedar embarazadas hasta 30 días después de la última dosis del fármaco del estudio. |
|
E.5 End points |
E.5.1 | Primary end point(s) |
Proportion of patients with undetectable viral load (<50 copies/ml) at 48 weeks follow-up, according to time to loss of virologic response (TLOVR) algorith by intention to treat analysis. Lost patients or changes in study drugs will be considered treatment failures (loss and changes = failure). |
Proporción de pacientes con carga viral indetectable (<50 copias/ml) a las 48 semanas de seguimiento, según el algoritmo tiempo hasta la pérdida de la respuesta virológica (TLOVR, time to loss of virologic response) en la población por intención de tratar. Los pacientes perdidos y los cambios en los fármacos de estudio se considerarán fracasos del tratamiento (pérdidas y cambios=fracasos). |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
At 48 weeks follow-up |
A las 48 semanas de seguimiento |
|
E.5.2 | Secondary end point(s) |
- Time to virologic failure, calculated by Kaplan-Meier method, as well as median time to the event and the interquartile range. Time to failure in both groups will be compared using long-rank test.
- Change in CD4+ and CD8+ cells count at weeks 12, 24 and 48 of treatment |
El tiempo hasta el fracaso virológico se calculará mediante el método de Kaplan-Meier. Se calcula el tiempo mediano hasta el evento y el rango intercuartílico. Se comparan el tiempo hasta el fracaso en ambos grupos de tratamiento mediante el test log-rank.
Se comparará el cambio en el recuento de linfocitos CD4 + y CD8 + en las semanas 12, 24 y 48 de tratamiento. |
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
Time to virologic failure in each patient enroled in the study
CD4+ and CD8+ cells count at weeks 12, 24 and 48 of treatment |
El time hasta el fracaso virológico cuando aparezca en cada paciente incluído en el estudio
Recuento de linfocitos CD4+ y CD8+ a las semanas 12, 24 y 48 de tratamiento. |
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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) | 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 | 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 | 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 | 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
- Interim analysis will be performed when 50% of subjects (n=30 experimental arm, n=15 control group) complete 24 weeks of treatment. The study will be terminated if a difference >20% in the percentage of patients who experience virologic failure in the experimental arm compared to control arm is noticed.
- The study may be interrupted at any time by the sponsor or hospital authorities, if there are risks to patient safety or other reasons that justify this decision, at its discretion. |
- LVLS
- Análisis intermedio: cuando 50% de los sujetos (n=30 asignados al grupo experimental, 15 al control) hayan completado 24 semanas de tto. Finalizará el estudio si se observa una diferencia >20% en el % de pacientes en fracaso virológico en el grupo experimental con respecto al control.
- Podrá ser interrumpido en cualquier momento por parte del promotor o autoridades sanitarias, si existen riesgos para la seguridad de los pacientes u otros motivos que justifiquen esta decisión. |
|
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 |