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Completed

NCT Number: NCT01818856

Pharmacokinetic Interactions Between Telaprevir and Un-boosted Atazanavir

Hypothesis: the Telaprevir(TVR) plasma levels (750 mg q8h or 1125 mg/12h )will not be affected when co-administered with un-boosted Atazanavir (ATV) 200 mg q12h plus two analogues (NRTIs) in HCV/HIV-co-infected patients.

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Key information

Conditions

Hepatitis C, Chronic Acquired Immunodeficiency Syndrome Blood-Borne Infections Chronic Disease Communicable Diseases Digestive System Diseases Disease Attributes Flaviviridae Infections Genital Diseases HIV Infection HIV Infections Hepatitis Hepatitis C Hepatitis, Chronic Hepatitis, Viral, Human Immune System Diseases Immunologic Deficiency Syndromes Infections Lentivirus Infections Liver Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms RNA Virus Infections Retroviridae Infections Sexually Transmitted Diseases Sexually Transmitted Diseases, Viral Slow Virus Diseases Urogenital Diseases Virus Diseases

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Hospital Universitario Virgen del Rocio

Seville, 41013, Spain

About this study

Objectives

  • Primary Outcome Measures: evaluate the changes in the plasma pharmacokinetic parameters (Cmax, Cmin, AUC, t 1/2, and Cl) of Telaprevir (TVR) administered at 750 mg/8h together with un-boosted Atazanavir (200 mg/12h), taking as reference the pharmacokinetic parameters observed when TVR is administered with Atazanavir/ritonavir (300/100 mg/day)
  • To assess the changes in the plasma pharmacokinetic parameters of Atazanavir administered as 200 mg/12h with respect to its administration as 300/100 mg/day when administered together with TVR (750 mg/8h or 1125 mh/12h).

Method: open labelled clinical trial with a planned duration of 24 weeks in which 14 HIV/Hepatitis C virus genotype 1 patients under treatment with pegylated α-interferon, Ribavirin and Telaprevir will be enrolled. A 24 hours pharmacokinetic profile will be obtained after a supervised drug intake while taking TVR and ATV/rtv. Afterwards, the patients will take un-boosted ATV 200 mg bid for 7 - 10 days. Subsequently, a new pharmacokinetic profile will be obtained.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients over 18 years old co-infected with HIV and genotype 1 HCV under treatment with pegylated α-interferon, Ribavirin and Telaprevir according to the recommendations of the Spanish Agency of Medicines and Health Products.
  • Informed consent of the patient.

Exclusion criteria

  • The usual exclusion criteria in clinical practice to start the treatment with these drugs (pegylated α-interferon, Ribavirin, Telaprevir and atazanavir) according to the Spanish and international recommendations (Spanish Agency of Medicines and Health Products,European Association for the Study of the Liver Clinical Practice Guidelines: management of hepatitis C virus infection. J Hepatol. 2011. Consensus Document of Gesida/Spanish Plan on Aids regarding the antiretroviral treatment in adults infected with the human immunodeficiency virus [Updated January 2012]).
  • Concomitant use of drugs or medicinal products that could alter the pharmacokinetics of TVR or ATV.
  • Medical records suggesting malabsorption or presence of diarrhea (>3 depositions/day) that could interfere with the absorption of the studied drugs.

Treatment and study plan

Ritonavir withdrawal, atazanavir 200 mg/12h

Drug

Other names: Reyataz, Norvir, Incivo

Telaprevir interactions

Drug

Other names: Incivo, Reyataz, Norvir

Primary outcomes

  1. Changes in pharmacokinetic parameters of TVR

    Time frame: 7 - 10 days

    The Telaprevir peak concentrations (Cmax), trough levels (Cmin) at 8 or 12 hours, the areas under the curves over the dosing interval (AUC0-τ), and half-life during the elimination phase (t½ β) will be compared between days 0 and 7 as geometric mean ratios (GMRs) and their 90% CIs using day 0 values as reference. The differences in pharmacokinetic parameters between the regimens will be considered significant when the interval between low and high 90% CI did not include the value 1.0.

Secondary outcomes

  1. Changes in pharmacokinetic parameters of ATV

    Time frame: 7 - 10 days

    The Atazanavir peak concentrations (Cmax), trough levels (Cmin) at 12 or 24 hours, the areas under the curves over the dosing interval (AUC0-τ), and half-life during the elimination phase (t½ β) will be summarized as geometric means (GM) and will be compared between days 0 and 7 as geometric mean ratios (GMRs) and their 90% CIs using day 0 values as reference. The differences in pharmacokinetic parameters between the regimens will be considered significant when the interval between low and high 90% CI did not include the value 1.0.

Sponsors and collaborators

Lead sponsor

Hospitales Universitarios Virgen del Rocío

Other

Collaborators

  • Bristol-Myers Squibb

Registry information

Official study title

Pharmacokinetic Interactions Between Telaprevir and Un-boosted Atazanavir in HIV/HCV-co-infected Patients Under Treatment for Genotype 1 Chronic Hepatitis C.

Important dates

Study start
2012
Primary completion
2013
Study completion
2013
First posted
Mar 27, 2013
Registry last updated
Apr 22, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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