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An Exploratory Study of Telaprevir in Treatment-Naive Participants With Chronic Genotype 4 Hepatitis C Virus Infection

27. srpna 2013 aktualizováno: Tibotec BVBA

A Phase IIa Randomized, Partially Blinded Trial of Telaprevir (VX-950) in Treatment-Naive Subjects With Chronic Genotype 4 Hepatitis C Infection

The purpose of this study is to evaluate the activity and safety of telaprevir on Hepatitis C Virus (HCV) Genotype 4, alone or in combination with standard therapy, that is, pegylated-interferon-alfa-2a and ribavirin in treatment-naive (never been treated before with antiretroviral therapy) participants.

Přehled studie

Postavení

Dokončeno

Podmínky

Intervence / Léčba

Detailní popis

This is a Phase 2a, partially-blind, randomized (study drug assigned by chance) and multiple-dose study to evaluate the activity and safety of telaprevir on HCV early viral kinetics in treatment-naive participants who are chronically infected with HCV Genotype 4. The study consists of 4 parts: Screening period (6-week); Investigational Treatment period (consisting of 2-week treatment with telaprevir or telaprevir+standard treatment or placebo); Standard Treatment period (consists of 46 or 48-week standard treatment); and Follow-up period (24-week). The activity of telaprevir will be evaluated by early viral kinetic parameters along with viral response and pharmacokinetic assessments during the investigational treatment phase. Participants' safety will be monitored throughout the study.

Typ studie

Intervenční

Zápis (Aktuální)

24

Fáze

  • Fáze 2

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 65 let (Dospělý, Starší dospělý)

Přijímá zdravé dobrovolníky

Ne

Pohlaví způsobilá ke studiu

Všechno

Popis

Inclusion Criteria: - Participant has chronic Genotype 4 Hepatitis C infection

  • Plasma hepatitis C virus (HCV) ribonucleic acid (RNA) level greater than 10,000 International unit per milliliter (IU/mL) at Screening
  • Participant never received treatment for HCV
  • Participant was to be in good health (besides HCV infection), in the opinion of the Investigator, judged on the basis of medical history and physical examination (including vital signs and screening electrocardiogram [ECG]), with any chronic medical conditions under stable medical control
  • Participant had to be willing to refrain from the concomitant use of any medications or substances Exclusion Criteria: - Participants with history or evidence of cirrhosis or history of suspicion of alcohol, barbiturate, or amphetamine recreational or narcotic drug use, which in the Investigator's opinion would compromise the participant's safety and/or compliance with study procedures
  • Participant has human immunodeficiency virus (HIV) or hepatitis B virus (HBV) co-infection
  • Female participants who are pregnant, or planning to become pregnant, or breastfeeding, and partners of female participants who are pregnant or breastfeeding
  • Participant has hypersensitivity to tartrazine
  • Participant had participated in any clinical trial for an investigational drug within 90 days before drug administration or participated in more than 2 drug studies in the last 12 months

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: Léčba
  • Přidělení: Randomizované
  • Intervenční model: Paralelní přiřazení
  • Maskování: Dvojnásobek

Zbraně a zásahy

Skupina účastníků / Arm
Intervence / Léčba
Experimentální: Telaprevir and then Pegylated-interferon-alfa-2a+Ribavirin
Telaprevir 750 milligram (mg) tablet will be administered three times a day orally for 2 weeks and after that pegylated-interferon-alfa-2a (180 microgram [mcg] subcutaneous injection [injected under the skin by way of a needle], once weekly) and ribavirin (1000-1200 mg as oral tablet daily) will be administered from Week 2 to 50.
Lék: Telaprevir
Telaprevir 750 milligram (mg) tablet will be administered three times a day orally for 2 weeks.
Lék: Pegylated-interferon-alfa-2a
Pegylated-interferon-alfa-2a (180 microgram [mcg] subcutaneous injection, once weekly) will be administered from Week 1 to Week 48 or 50.
Lék: Ribavirin
Ribavirin (1000-1200 mg as oral tablet daily) will be administered from Week 1 to Week 48 or 50.
Experimentální: Telaprevir+Pegylated-interferon-alfa-2a+Ribavirin
Telaprevir 750 mg tablet will be administered three times a day orally for 2 weeks along with pegylated-interferon-alfa-2a (180 mcg subcutaneous injection, once weekly) and ribavirin (1000-1200 mg as oral tablet daily), from Week 1 to 48.
Lék: Telaprevir
Telaprevir 750 milligram (mg) tablet will be administered three times a day orally for 2 weeks.
Lék: Pegylated-interferon-alfa-2a
Pegylated-interferon-alfa-2a (180 microgram [mcg] subcutaneous injection, once weekly) will be administered from Week 1 to Week 48 or 50.
Lék: Ribavirin
Ribavirin (1000-1200 mg as oral tablet daily) will be administered from Week 1 to Week 48 or 50.
Aktivní komparátor: Placebo+Pegylated-interferon-alfa-2a+Ribavirin
Matching placebo tablet to telaprevir will be administered three times a day orally for 2 weeks along with pegylated-interferon-alfa 2a (180 mcg subcutaneous injection, once weekly) and ribavirin (1000-1200 mg as oral tablet daily), from Week 1 to 48.
Lék: Pegylated-interferon-alfa-2a
Pegylated-interferon-alfa-2a (180 microgram [mcg] subcutaneous injection, once weekly) will be administered from Week 1 to Week 48 or 50.
Lék: Ribavirin
Ribavirin (1000-1200 mg as oral tablet daily) will be administered from Week 1 to Week 48 or 50.
Lék: Placebo
Matching placebo tablet to telaprevir was administered three times a day orally for 2 weeks.

Co je měření studie?

Primární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Change From Baseline in Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Levels at Day 15
Časové okno: Baseline and Day 15
The plasma HCV RNA levels were used to assess the antiviral activity which included viral response as either undetectable HCV RNA (that is no HCV target was detected in the plasma sample) or less than 25 International unit per milliliter (IU/mL) of HCV RNA (that is Plasma sample contained HCV RNA at a concentration below the limit of quantification [LLOQ=25 IU/mL] of the viral load assay). Plasma HCV RNA levels were measured using the COBAS TaqMan HCV test Version 2.0. This assay used real-time reverse transcription-polymerase chain reaction (RT-PCR) methodology.
Baseline and Day 15

Sekundární výstupní opatření

Měření výsledku
Popis opatření
Časové okno
Percentage of Participants With Viral Response (Undetectable HCV RNA)
Časové okno: Day 15 up to EOT (Week 48/50 or early discontinuation)
Viral response was either defined as having undetectable HCV RNA (that is, no HCV RNA was detected in the participants' plasma samples) or less than 25 IU/mL HCV RNA from Day 15 up to end of treatment (EOT), that is Week 48/50 or early discontinuation. In Week x/y, where, x represents time frame for Telaprevir+Pegylated-interferon-alfa-2a+Ribavirin and Placebo+Pegylated-interferon-alfa-2a+Ribavirin and; y represents time frame for Telaprevir and Pegylated-interferon-alfa-2a+Ribavirin treatment group.
Day 15 up to EOT (Week 48/50 or early discontinuation)
Median Time to First Viral Response (Undetectable HCV RNA)
Časové okno: Up to Week 48/50
Time to first viral response (Undetectable HCV RNA) is defined as the number of days since the start of study medication until first time negative HCV RNA level that is less than 25 IU/mL was detected.
Up to Week 48/50
Number of Participants With Viral Breakthrough (Detectable HCV RNA)
Časové okno: Day 8, Day 12, Day 15, Week 24/26 and Week 36/38
Viral breakthrough was defined as having a confirmed increase greater than 1 log 10 in HCV RNA level from the lowest level reached, or a confirmed level of HCV RNA greater than 100 IU/mL in participants whose HCV RNA had previously become undetectable [less than 25 IU/mL]). In Week x/y, where, x represents time frame for Telaprevir+pegylated-interferon-alfa-2a+Ribavirin and Placebo+pegylated-interferon-alfa-2a+Ribavirin and y represents time frame for Telaprevir and then Pegylated-interferon-alfa-2a+Ribavirin treatment group.
Day 8, Day 12, Day 15, Week 24/26 and Week 36/38
Percentage of Participants With Sustained Viral Response (SVR)
Časové okno: Week 12 and 24 after the last dose of study medication
Sustained viral response was defined as having undetectable HCV RNA at EOT (Week 48/50 or early discontinuation) and no confirmed detectable HCV RNA levels between EOT and 12 weeks (SVR12) and 24 weeks (SVR24) after the last dose of study medication.
Week 12 and 24 after the last dose of study medication
Percentage of Participants With Relapse
Časové okno: Week 24 after EOT (Week 48/50 or early discontinuation)
Relapse was defined as having confirmed detectable HCV RNA during the 24-week follow-up period in participants who had undetectable HCV RNA at EOT (Week 48/50 or early discontinuation). Participants who dropped out between 24-week follow-up after EOT were not evaluated for relapse.
Week 24 after EOT (Week 48/50 or early discontinuation)
Area Under the Serum Concentration-Time Curve (AUC)
Časové okno: Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
The AUC is a measure of the serum concentration-time curve, calculated by the lin-up/log-down method.
Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
Maximum Serum Concentration (Cmax) of Telaprevir
Časové okno: Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
The Cmax is the maximum observed serum concentration, which was measured at Day 1 and 15 for telaprevir and then pegylated-interferon-alfa-2a+Ribavirin (reference) and telaprevir+pegylated-interferon-alfa-2a+Ribavirin (test).
Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
Pre-Dose Serum Concentration (C[0h]) of Telaprevir
Časové okno: 0 hour (pre-dose) at Day 15
The C(0h) is the pre-dose serum concentration of telaprevir and then pegylated-interferon-alfa-2a+Ribavirin (reference) and telaprevir+pegylated-interferon-alfa-2a+Ribavirin (test).
0 hour (pre-dose) at Day 15
Minimum Serum Concentration (Cmin) of Telaprevir on Day 15
Časové okno: Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 15
The Cmin is the minimum serum concentration between 0 hour and τ (τ=dosing interval) of telaprevir and then pegylated-interferon-alfa-2a+Ribavirin (reference) and telaprevir+pegylated-interferon-alfa-2a+Ribavirin (test). Cmin on Day 15 is reported here.
Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 15
Time to Reach the Maximum Serum Concentration (Tmax) of Telaprevir
Časové okno: Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
The tmax is the time to reach maximum observed serum concentration of telaprevir and then pegylated-interferon-alfa-2a+Ribavirin (reference) and pegylated-interferon-alfa-2a+Ribavirin (test).
Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
Average Steady-State Serum Concentration (Css,av) of Telaprevir
Časové okno: Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15
The Average steady-state serum concentration (Css,av) was calculated by AUC/τ at steady-state (τ=dosing interval) of telaprevir and then pegylated-interferon-alfa-2a+Ribavirin (reference) and telaprevir+pegylated-interferon-alfa-2a+Ribavirin (test).
Pre-dose, 0.5, 1, 2, 3, 4, 6 and 8 hours post-dose on Day 1 and 15

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Tibotec BVBA

Publikace a užitečné odkazy

Osoba odpovědná za zadávání informací o studiu tyto publikace poskytuje dobrovolně. Mohou se týkat čehokoli, co souvisí se studiem.

Obecné publikace

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. ledna 2008

Primární dokončení (Aktuální)

1. ledna 2010

Dokončení studie (Aktuální)

1. ledna 2010

Termíny zápisu do studia

První předloženo

20. prosince 2007

První předloženo, které splnilo kritéria kontroly kvality

26. prosince 2007

První zveřejněno (Odhad)

27. prosince 2007

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Odhad)

9. září 2013

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

27. srpna 2013

Naposledy ověřeno

1. srpna 2013

Více informací

Termíny související s touto studií

Klíčová slova

Další relevantní podmínky MeSH

Další identifikační čísla studie

  • CR013714
  • VX-950-TiDP24-C210

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 .

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