CLINICAL TRIALS PROFILE FOR RITONAVIR
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505(b)(2) Clinical Trials for ritonavir
| Trial Type | Trial ID | Title | Status | Sponsor | Phase | Start Date | Summary |
|---|---|---|---|---|---|---|---|
| New Combination | NCT00196625 ↗ | Salvage Therapy With Amprenavir, Lopinavir and Ritonavir in HIV-Infected Patients in Virological Failure. | Completed | French National Agency for Research on AIDS and Viral Hepatitis | Phase 2 | 2000-11-01 | HIV infected patients are treated with highly active antiretroviral therapy (HAART). Side effects and the great number of pills reduces adherence to the treatment, and induces therapeutic failure. In order to maintain efficacy of HAART, new combination is evaluated. The aim of the study is to compare the antiviral efficacy of this salvage therapy combining lopinavir and amprenavir with 200 mg/d or 400 mg/d ritonavir, together with nucleoside reverse transcriptase inhibitors, over a 26-week period in HIV-infected patients in whom multiple antiretroviral regimens had failed. |
| New Formulation | NCT01052883 ↗ | TMC114-TiDP3-C182 - A Study to Compare the Oral Bioavailability of a 800 mg Prototype Tablet Formulation of Darunivar (DRV) to That of the 400 mg Commercial Tablet Formulation in the Presence of Low Dose Ritonavir, Under Fasted and Fed Conditions | Completed | Tibotec Pharmaceuticals, Ireland | Phase 1 | 2010-03-01 | The purpose of this study is to compare the drug levels of darunavir obtained after administration of a single administration of the 800 mg tablet (new formulation) to that following administration of two 400 mg commercial tablets formulation when administered under fed and fasted conditions to those also taking low-dose ritonavir. Darunavir is marketed for the treatment of HIV. The short-term safety and tolerability of darunavir following administration of a single 800 mg dose of darunavir given to healthy volunteers taking taking low-dose ritonavir will also be assessed. |
| New Formulation | NCT02244190 ↗ | Bioequivalence of Two Different Oral Solutions Tipranavir Administered in Combination With Ritonavir to Healthy Volunteers | Completed | Boehringer Ingelheim | Phase 1 | 2008-04-01 | To establish the bioequivalence of the new tipranavir oral solution formulation with the current tipranavir oral solution formulation following single-dose administration. In each case, 500 mg tipranavir was coadministered with 200 mg ritonavir. |
| New Dosage | NCT02435563 ↗ | Dose Adaptation to Offset the Interaction Between Ticagrelor and Ritonavir by Population-based PK Modeling | Completed | University Hospital, Geneva | Phase 2 | 2014-08-01 | Ticagrelor is a new generation antiplatelet agent with higher efficacy as compared to clopidogrel and prasugrel in treatment of patients with moderate and high ischemic risks. Ticagrelor is active as such and its hepatic metabolism by CYP3A generates also an active metabolite. Because of the remarkable progress in HIV therapies the number of older age patients is on the rise, requiring adequate cardiovascular treatment. Since frontline HIV therapies include ritonavir, a strong inhibitor of CYP3A enzyme, ticagrelor is contraindicated in these patients because of the expected interaction and bleeding risk. A lower efficacy of clopidogrel and prasugrel, which are both pro-drugs, in the presence of ritonavir has been already demonstrated. Therefore, administration of a lower dose of ticagrelor may be a good alternative in HIV patients in order to lessen the impact of this pharmacokinetic interaction. The aim of this study is to adjust the dose of ticagrelor in case of co-treatment with ritonavir to achieve the same pharmacokinetic profile as administered alone using a physiologically-based pharmacokinetic (PBPK) model. As the first step, a pharmacokinetic (PK) model for ticagrelor and its active metabolite will be created based on available in vitro and in vivo parameters in healthy volunteers. An open-label, 2 sessions cross over study will be conducted with 20 healthy male volunteers at Clinical Research Center (CRC) of Geneva University Hospitals (HUG). During the first session of the clinical trial, a single dose 180 mg ticagrelor will be administered to the volunteers and obtained pharmacokinetic data will be fitted into the model for optimization. Thereafter a simulated trial by the Simcyp® simulator in presence of a single dose 100 mg ritonavir will allow evaluating the impact of CYP3A inhibition on the concentration-time profile of ticagrelor and its active metabolite. The necessary dose of ticagrelor to minimize the magnitude of this interaction will be calculated. This new dose will be co-administered with ritonavir in the same volunteers during the second session of the clinical trial. The purpose is to obtain the same PK profile with single dose of 180 mg ticagrelor administered alone and with an adapted dose of ticagrelor co-administered with a single dose 100 mg ritonavir. Moreover, the pharmacodynamic effect of ticagrelor will be measured in both sessions of the clinical trial using two specific platelet function tests: the VAsodilator-Stimulated Phosphoprotein assay (VASP) and VerifyNow® P2Y12. With the same PK profile, the same pharmacodynamic activity is expected. The modulation of activity of CYP3A and P-gp by ritonavir will be also monitored using micro dose midazolam and fexofenadine as probe substrates. The purpose of this study is to use the Simcyp® Simulator mechanistic PBPK modeling to broaden the application field of ticagrelor, especially in HIV patients. Since PK models are often created after clinical observations, the prospective aspect of this study is of particular value as the model will be first created and then applied to an unknown clinical scenario. |
| >Trial Type | >Trial ID | >Title | >Status | >Sponsor | >Phase | >Start Date | >Summary |
All Clinical Trials for ritonavir
| Trial ID | Title | Status | Sponsor | Phase | Start Date | Summary |
|---|---|---|---|---|---|---|
| NCT00000822 ↗ | A Phase I/II Double-Blind Controlled Trial to Determine the Safety and Immunogenicity of HIV-1 MN rgp160 Immuno AG Vaccine Therapy in HIV-Infected Individuals With Greater Than or Equal to 500/mm3 CD4+ T Cells and 200-400/mm3 CD4+ T Cells | Completed | Bristol-Myers Squibb | Phase 1 | 1969-12-31 | To evaluate the safety and immunogenicity of HIV-1 MN rgp160 (Immuno-AG) in HIV-infected patients. To evaluate the immunogenicity of HIV-1 MN rgp160 immunogen by lymphocyte proliferation, specific antibody responses, and DTH reaction. To describe the durability of the immunogen in patients who respond to the first 7 injections when they are boosted every 8 weeks for an additional 6-12 months [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. To describe the ability of the immunogen to induce a response after an additional 6-12 months of injections among patients who did not respond to the first 7 injections [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. HIV-specific cellular immune responses appear to play an important role in HIV disease progression since both T helper and cytotoxic function against HIV decrease with disease progression. |
| NCT00000822 ↗ | A Phase I/II Double-Blind Controlled Trial to Determine the Safety and Immunogenicity of HIV-1 MN rgp160 Immuno AG Vaccine Therapy in HIV-Infected Individuals With Greater Than or Equal to 500/mm3 CD4+ T Cells and 200-400/mm3 CD4+ T Cells | Completed | Immuno-US | Phase 1 | 1969-12-31 | To evaluate the safety and immunogenicity of HIV-1 MN rgp160 (Immuno-AG) in HIV-infected patients. To evaluate the immunogenicity of HIV-1 MN rgp160 immunogen by lymphocyte proliferation, specific antibody responses, and DTH reaction. To describe the durability of the immunogen in patients who respond to the first 7 injections when they are boosted every 8 weeks for an additional 6-12 months [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. To describe the ability of the immunogen to induce a response after an additional 6-12 months of injections among patients who did not respond to the first 7 injections [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. HIV-specific cellular immune responses appear to play an important role in HIV disease progression since both T helper and cytotoxic function against HIV decrease with disease progression. |
| NCT00000822 ↗ | A Phase I/II Double-Blind Controlled Trial to Determine the Safety and Immunogenicity of HIV-1 MN rgp160 Immuno AG Vaccine Therapy in HIV-Infected Individuals With Greater Than or Equal to 500/mm3 CD4+ T Cells and 200-400/mm3 CD4+ T Cells | Completed | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 | 1969-12-31 | To evaluate the safety and immunogenicity of HIV-1 MN rgp160 (Immuno-AG) in HIV-infected patients. To evaluate the immunogenicity of HIV-1 MN rgp160 immunogen by lymphocyte proliferation, specific antibody responses, and DTH reaction. To describe the durability of the immunogen in patients who respond to the first 7 injections when they are boosted every 8 weeks for an additional 6-12 months [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. To describe the ability of the immunogen to induce a response after an additional 6-12 months of injections among patients who did not respond to the first 7 injections [AS PER AMENDMENT 11/12/96: stratum 1 patients only]. HIV-specific cellular immune responses appear to play an important role in HIV disease progression since both T helper and cytotoxic function against HIV decrease with disease progression. |
| NCT00000859 ↗ | A Randomized Trial of the Efficacy and Safety of a Strategy of Starting With Nelfinavir Versus Ritonavir Added to Background Antiretroviral (AR) Nucleoside Therapy in HIV-Infected Individuals With CD4+ Cell Counts Less Than or Equal to 200/mm3 | Completed | National Institute of Allergy and Infectious Diseases (NIAID) | N/A | 1969-12-31 | To compare nelfinavir (NFV) with ritonavir (RTV) for delaying disease progression or death in HIV-infected patients with CD4+ cell counts less than 100 cells/mm3 [AS PER AMENDMENT 3/11/98: less than or equal to 200 cells/mm3]. To compare NFV with RTV for the development of adverse events and for rates of permanent discontinuation of study medication. [AS PER AMENDMENT 10/02/97: To compare by intention-to-treat analysis for disease progression, including death, the following two regimens: NFV plus background combination antiretroviral (AR) therapy followed by indinavir (IDV) or RTV in the event of significant intolerance; and RTV plus AR therapy followed by IDV, then NFV, in the event of significant intolerance.] [AS PER AMENDMENT 3/11/98: SUBSTUDY CPCRA 045: To determine the relative rates of emergence of HIV-1 resistance and to compare changes in plasma HIV RNA levels and CD4+ cell counts in a sample of patients with CD4+ cell counts <= 200/mm3 who are enrolled in protocol CPCRA 042.] AR therapy is rapidly becoming the standard of care for the treatment of HIV infection. AR therapy provides the best opportunity for maximizing viral suppression, reducing toxicity and delaying the emergence of resistant strains. The newest class of AR agents, the HIV protease inhibitors, exhibits the most potent anti-HIV effects described to date. This study will compare 2 protease inhibitors, NFV and RTV for efficacy and safety in a population with advanced HIV disease, who are taking various background nucleoside therapies. |
| NCT00000888 ↗ | Safety and Effectiveness of Ritonavir Plus Lamivudine Plus Zidovudine in HIV-Infected Pregnant Women and Their Babies | Completed | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) | Phase 1 | 1969-12-31 | The purpose of this study is to see if it is safe and effective to give ritonavir (RTV) plus lamivudine (3TC) plus zidovudine (ZDV) to HIV-infected pregnant women during pregnancy and to their babies after birth. Pregnant women who are HIV-positive are at risk of giving HIV to their babies during pregnancy or delivery. It is important to learn how to prevent HIV-positive pregnant women from giving HIV to their babies. RTV and ZDV have been shown to be safe and effective against HIV in adults. The combination of 3 anti-HIV drugs (RTV, 3TC, and ZDV) may help prevent HIV infection from mother to infant but studies are needed to determine whether they are safe and effective during pregnancy. |
| NCT00000888 ↗ | Safety and Effectiveness of Ritonavir Plus Lamivudine Plus Zidovudine in HIV-Infected Pregnant Women and Their Babies | Completed | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 | 1969-12-31 | The purpose of this study is to see if it is safe and effective to give ritonavir (RTV) plus lamivudine (3TC) plus zidovudine (ZDV) to HIV-infected pregnant women during pregnancy and to their babies after birth. Pregnant women who are HIV-positive are at risk of giving HIV to their babies during pregnancy or delivery. It is important to learn how to prevent HIV-positive pregnant women from giving HIV to their babies. RTV and ZDV have been shown to be safe and effective against HIV in adults. The combination of 3 anti-HIV drugs (RTV, 3TC, and ZDV) may help prevent HIV infection from mother to infant but studies are needed to determine whether they are safe and effective during pregnancy. |
| >Trial ID | >Title | >Status | >Sponsor | >Phase | >Start Date | >Summary |
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