Tato stránka byla automaticky přeložena a přesnost překladu není zaručena. Podívejte se prosím na anglická verze pro zdrojový text.

Genotypic Tropism Testing In Proviral Dna To Guide CCR5 Antagonist Treatment In Subjects With Undetectable HIV-1 Viremia

Use Of Genotypic HIV-1 Tropism Testing In Proviral DNA To Guide CCR5 Antagonist Treatment In Subjects With Undetectable HIV-1 Viremia

CCR5 antagonists might be an adequate alternative for HIV-1-infected individuals with suppressed viremia who experience antiretroviral-related toxicity. The assessment of HIV-1 tropism in proviral DNA could be helpful to inform in which of these subjects CCR5 antagonists could be efficacious.

Přehled studie

Postavení

Dokončeno

Podmínky

Intervence / Léčba

Detailní popis

The assessment of HIV-1 tropism is needed before starting treatment with a CCR5-antagonist. Several phenotypic and genotyping tropism tests have been developed in the recent years. Phenotypic assays (i.e. TrofileTM and ES-TrofileTM) have been used.in most clinical trials. Genotypic tropism testing, however, is easier, cheaper and faster than phenotypic methods, and can be performed in a local HIV laboratories.

Viral RNA amplification is difficult in subjects with HIV-1 RNA levels <500-1000 copies/mL. In these cases, the optimal source of genetic material is peripheral blood mononuclear cell (PBMC)-associated proviral DNA. Whereas genotypic tropism testing in proviral DNA is technically feasible, it has not been validated as a tool to predict sustained virological response to CCR5-antagonist therapy in subjects with undetectable viremia.

As of today, maraviroc is the only CCR5-antagonist approved for HIV treatment. It has few drug interactions and a good security profile, particularly in terms of lipid and glucose metabolism. Therefore, it might be an adequate alternative for HIV-1-infected individuals with suppressed viremia who experience antiretroviral-related toxicity or metabolic problems.

This study will evaluate 48-week virological outcomes in aviremic subjects with an R5 virus by proviral genotypic tropism testing who switch the "third drug" of their regimen to maraviroc.

Typ studie

Intervenční

Zápis (Aktuální)

74

Fáze

  • Fáze 4

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní místa

      • Alicante, Španělsko, 03010
        • Hospital Gral. U. de Alicante
      • Barcelona, Španělsko, 08035
        • Hospital Vall d'Hebron
      • Barcelona, Španělsko, 08304
        • Hospital de Mataró
      • Granada, Španělsko, 18014
        • Hospital Virgen de las Nieves
      • Granada, Španělsko, 28012
        • Hospital U. San Cecilio
      • Madrid, Španělsko, 28040
        • Hospital Clinico San Carlos
      • Madrid, Španělsko, 28007
        • Hospital U. Gregorio Marañón
      • Madrid, Španělsko, 28034
        • Hospital Ramon y Cajal
      • Madrid, Španělsko, 28029
        • Hospital Carlos III
      • Murcia, Španělsko, 30003
        • Hospital Reina Sofía de Murcia
      • Tarragona, Španělsko, 43007
        • Hospital Sant Pau i Santa Tecla
      • Valencia, Španělsko, 46015
        • Hospital Arnau de Vilanova
      • Valencia, Španělsko, 46009
        • Hospital la Fé
      • Valencia, Španělsko, 46014
        • Hospital Gral. U. de Valencia
      • Valencia, Španělsko, 46017
        • Hospital U. Dr. Peset
    • A Coruña
      • Santiago de Compostela, A Coruña, Španělsko, 15781
        • Hospital Xeral de Vigo
    • Alicante
      • Elche, Alicante, Španělsko, 03203
        • Hospital de Elche
    • Baleares
      • Palma de Mallorca, Baleares, Španělsko, 07011
        • Hospital Son Espases
    • Barcelona
      • Badalona, Barcelona, Španělsko, 08916
        • H. U. Germans Trias i Pujol
      • Hospitalet de Llobregat, Barcelona, Španělsko, 08907
        • H. de Bellvitge
    • Cantabria
      • Santander, Cantabria, Španělsko, 39011
        • Hospital U. Marques de Valdecilla
    • Castelló
      • Castelló De La Plana, Castelló, Španělsko, 12004
        • Hospital General de Castellón
    • Murcia
      • Cartagena, Murcia, Španělsko, 30203
        • Hospital Sta. Lucía/ H. Sta. Mª del Rosell
    • Vizcaya
      • Bilbao, Vizcaya, Španělsko, 48903
        • Hospital de Cruces

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

18 let až 99 let (Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Ne

Pohlaví způsobilá ke studiu

Všechno

Popis

Inclusion Criteria:

  1. HIV-1 infected patients.
  2. Age 18 or more.
  3. Antiretroviral treatment containing 2 Nucleoside/Nucleotide Reverse Transcriptase Inhibitors (NRTIs) plus 1 Non-nucleoside reverse-transcriptase inhibitor (NNRTI) or 1 protease inhibitor (PI) or 1 integrase inhibitor (ININ)
  4. Patients receiving stable antiretroviral treatment for at least 6 months.
  5. Viral load under 50 copies/mL in the last 6 months
  6. Patients with CCR5 tropism based in V3 genotyping in proviral DNA using the G2P with a false positive rate of 10% interpretation method.
  7. A change of treatment is needed due to toxicity / tolerability problems with the 3rd drug (PI, NNRTI or ININ), according to investigator criteria.
  8. An antiretroviral regimen containing a CCR5-antagonist is suitable for the patient (physician criteria).
  9. Voluntary written informed consent.

Exclusion Criteria:

  1. Pregnancy or breast-feeding.
  2. Patient previously treated with maraviroc.
  3. Patients with documented resistance to maraviroc or any other drug considered for the new ARV regimen.
  4. Viral failure in the moment of inclusion.
  5. Bad adherence history or anticipated (investigator criteria).

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

  • Primární účel: Základní věda
  • Přidělení: N/A
  • Intervenční model: Přiřazení jedné skupiny
  • Maskování: Žádné (otevřený štítek)

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Change of 3rd drug to maraviroc
Change of PI, NNRTI or integrase inhibitor to CCR5 antagonist (maraviroc)
Change of PI, NNRTI or integrase inhibitor to CCR5 antagonist (maraviroc)

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Časové okno
Percentage of patients with viral load under 50 copies/mL
Časové okno: Week 48
Week 48

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Percentage of patients without confirmed virological failure.
Časové okno: Up to week 48
To evaluate other aspects related to maintanence of virological response.
Up to week 48
Time to loss of virological response (TLOVR) < 200 copies/mL
Časové okno: Up to week 48
To evaluate other aspects related to maintanence of virological response.
Up to week 48
Time to loss of virological response (TLOVR) < 50 copies/mL
Časové okno: Up to week 48
To evaluate other aspects related to maintanence of virological response.
Up to week 48
Proportion of patients treated with maraviroc with viral load under 50 copies/mL
Časové okno: Week 12
To evaluate other aspects related to maintanence of virological response
Week 12
Proportion of patients treated with maraviroc with viral load under 50 copies/mL
Časové okno: Week 24
To evaluate other aspects related to maintanence of virological response
Week 24
Proportion of patients treated with maraviroc with viral load under 50 copies/mL
Časové okno: Week 36
To evaluate other aspects related to maintanence of virological response
Week 36
Proportion of patients treated with maraviroc with viral load under 50 copies/mL
Časové okno: Week 48
To evaluate other aspects related to maintanence of virological response.
Week 48
Time to treatment discontinuation, overall, and due to factors other than loss of virological response
Časové okno: Up to week 48
To evaluate other aspects related to maintanence of virological response
Up to week 48
Association between pre-treatment level of X4 viruses detected by deep sequencing at screening and virological response to maraviroc based therapy at week 48.
Časové okno: Week 48
To evaluate changes in HIV tropism
Week 48
Level of X4 viruses by detected by population sequencing.
Časové okno: Screening (up to 48 weeks)
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Screening (up to 48 weeks)
Level of X4 viruses by detected by population sequencing.
Časové okno: Week 12
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Week 12
Level of X4 viruses by detected by population sequencing.
Časové okno: Week 48
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Week 48
Level of X4 viruses by detected by deep sequencing.
Časové okno: Screening (up to 48 weeks)
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Screening (up to 48 weeks)
Level of X4 viruses by detected by deep sequencing.
Časové okno: Week 12
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Week 12
Level of X4 viruses by detected by deep sequencing.
Časové okno: Week 48
Evolution of viral tropism in PBMC-associated DNA by population and deep sequencing between screening and week 48 in subjects treated with maraviroc.
Week 48
High-resolution assessment of virus diversity and X4 level using deep sequencing
Časové okno: Week 12
High-resolution assessment of virus diversity and X4 level using deep sequencing at week 12 and at the time of virological failure.
Week 12
High-resolution assessment of virus diversity and X4 level using deep sequencing
Časové okno: In case of virological failure (week 12 up to virological failure)
High-resolution assessment of virus diversity and X4 level using deep sequencing at week 12 and at the time of virological failure.
In case of virological failure (week 12 up to virological failure)
Median change of total cholesterol.
Časové okno: From baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From baseline to week 48.
Median change of HDL cholesterol.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of LDL cholesterol.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of triglycerides
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of AST serum levels.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of ALT serum levels.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of alkaline phosphatase serum levels.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Median change of total bilirubin serum levels.
Časové okno: From Baseline to week 48.
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
From Baseline to week 48.
Cumulative number of adverse events
Časové okno: Week 4
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 4
Cumulative number of adverse events
Časové okno: Week 12
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 12
Cumulative number of adverse events
Časové okno: Week 24
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 24
Cumulative number of adverse events
Časové okno: Week 36
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 36
Cumulative number of adverse events
Časové okno: Week 48
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 48
Cumulative number of grade 3-4 adverse events
Časové okno: Week 4
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 4
Cumulative number of grade 3-4 adverse events
Časové okno: Week 12
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 12
Cumulative number of grade 3-4 adverse events
Časové okno: Week 24
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 24
Cumulative number of grade 3-4 adverse events
Časové okno: Week 36
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 36
Cumulative number of grade 3-4 adverse events
Časové okno: Week 48
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Week 48
Proportion of patients withdrawn from the study and reason for study withdrawal
Časové okno: Up to week 48
To evaluate the tolerability and safety with CCR5 antagonist containing regimen
Up to week 48

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia

1. června 2011

Primární dokončení (Aktuální)

1. dubna 2014

Dokončení studie (Aktuální)

1. května 2014

Termíny zápisu do studia

První předloženo

17. června 2011

První předloženo, které splnilo kritéria kontroly kvality

22. června 2011

První zveřejněno (Odhad)

23. června 2011

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

14. listopadu 2019

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

11. listopadu 2019

Naposledy ověřeno

1. července 2014

Více informací

Termíny související s touto studií

Další identifikační čísla studie

  • PROTEST

Tyto informace byly beze změn načteny přímo z webu clinicaltrials.gov. Máte-li jakékoli požadavky na změnu, odstranění nebo aktualizaci podrobností studie, kontaktujte prosím register@clinicaltrials.gov. Jakmile bude změna implementována na clinicaltrials.gov, bude automaticky aktualizována i na našem webu .

Klinické studie na HIV

Předplatit