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Clinical Trial to Assess the Security of the Dose Reduction of Ritonavir in HIV-Infected Patients in Treatment With Tipranavir/Ritonavir 500/200 mg Every 12 Hours

NCT00607958 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 11

Last updated 2019-12-05

No results posted yet for this study

Summary

Tipranavir is a drug with a high antiretroviral activity, also in presence of major mutations in the protease gene. However, its necessity of being co-administered with 400 mg of ritonavir daily, limits its efficacy for the treatment of HIV-infected patients, due to the high incidence of gastrointestinal adverse events. Nevertheless, tipranavir plasma though concentrations were higher than the proposed minimum effective concentration for patients with previous experience with protease inhibitors (PI) in half of patients treated with tipranavir/ritonavir at 500/100 mg dose every 12 hours. Furthermore, when the number of mutations in the protease gene is limited, there are no differences in the reduction of the viral load between patients treated with tipranavir/ritonavir at 500/200 mg and 500/100 mg every 12 hours. At last, the efficacy of tipranavir treatment has been more closely related with the inhibition quotient (IQ) than with concentrations considered isolated.

Considering the previous arguments, it can be hypothesized that, basing in every subject IQ, it could be possible to identify those patients HIV-infected in treatment with tipranavir/ritonavir at 500/200 mg every 12 hours that could take advance of the reduction of ritonavir to 100 mg every 12 hours, without compromising the viral replication control. This strategy could improve the tolerability to the treatment, what could result in a better adherence and less proportion of treatment abandon due to this reason

Conditions

  • HIV Infections

Interventions

DRUG

tipranavir/ritonavir (dose reduction)

tipranavir/ritonavir 500/100 BID

Sponsors & Collaborators

  • Fundación FLS de Lucha Contra el Sida, las Enfermedades Infecciosas y la Promoción de la Salud y la Ciencia

    collaborator OTHER

  • Germans Trias i Pujol Hospital

    lead OTHER

Principal Investigators

  • Molto Jose, MD,PhD · Germans Trias i Pujol Hospital

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-12-31
Primary Completion
2009-05-31
Completion
2009-05-31

Countries

  • Spain

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00607958 on ClinicalTrials.gov