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Home » Directories » FDA Approved Drugs » Aptivus (tipranavir)

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Aptivus (tipranavir)

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Currently Enrolling Trials

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    General Information

    Aptivus is an HIV-1 protease inhibitor that inhibits the virus-specific processing of the viral Gag and Gag-Pol polyproteins in HIV-1 infected cells, thus preventing formation of mature virions.

    Aptivus is specifically indicated in combination with ritonavir for the treatment of HIV-1 infected patients, adult and pediatrics, who are treatment-experienced and infected with HIV-1 strains resistant to more than one protease inhibitor.

    Aptivus is supplied as a capsule (250 mg) or oral soultion (100 mg/mL) formulation. Aptivus must be co-administered with ritonavir to exert its therapeutic effect. Failure to correctly co-administer Aptivus with ritonavir will result in plasma levels of tipranavir that will be insufficient to achieve the desired antiviral effect and will alter some drug interactions. The recommended initial dose of the drug is as follows:

    Adults
    Aptivus 500 mg (two 250 mg capsules or 5 mL oral solution) co-administered with 200 mg of ritonavir, twice daily.

    Pediatrics (age 2 to 18 years)
    Aptivus 14 mg/kg with 6 mg/kg ritonavir (or 375 mg/m2 co-administered with ritonavir 150 mg/m2) taken twice daily, not to exceed a maximum dose of Aptivus 500 mg co-administered with ritonavir 200 mg twice daily. For children who develop intolerance or toxicity and cannot continue with Aptivus 14 mg/kg with 6 mg/kg ritonavir, physicians may consider decreasing the dose to Aptivus 12 mg/kg with 5 mg/kg ritonavir (or Aptivus 290 mg/m2 co-administered with 115 mg/m2 ritonavir) taken twice daily, provided their virus is not resistant to multiple protease inhibitors.

    Clinical Results

    FDA Approval
    FDA approval of Aptivus was based on the following results:

    Adults
    Two ongoing, randomized, controlled, open-label, multicenter studies, dubbed RECIST 1 and RECIST 2, enrolled 1,483 HIV-1 positive, triple antiretroviral class experienced subjects. The subjects received either Aptivus co-administered with 200 mg of ritonavir plus optimal backgroumd therapy (OBR) or a ritonavir-boosted protease inhibitor (PI) (lopinavir, amprenavir, saquinavir or indinavir) plus OBR. The studies evaluated treatment response at 48 weeks. Through 48 weeks of treatment, the proportion of subjects in the Aptivus/ritonavir arm compared to the comparator PI/ritonavir arm with HIV-1 RNA < 400 copies/mL was 30.3% and 13.6% respectively, and with HIV-1 RNA < 50 copies/mL was 22.7% and 10.2% respectively. Among all randomized and treated subjects, the median change from baseline in HIV-1 RNA at the last measurement up to Week 48 was -0.64 log10 copies/mL in patients receiving APTIVUS/ritonavir versus -0.22 log10 copies/mL in the comparator PI/ritonavir arm. The median change from baseline in CD4+ cell count at the last measurement up to Week 48 was +23 cells/mm3 in patients receiving Aptivus/ritonavir versus +4 cells/mm3 in the comparator PI/ritonavir arm.

    Pediatrics
    This randomized, open-label, multicenter study enrolled 110 HIV-1 infected, treatment-experienced pediatric patients. The subjects were randomized to receive one of two Aptivus/ritonavir dose regimens: 375 mg/m2/150 mg/m2 dose or 290 mg/m2/115 mg/m2 dose, plus background therapy of at least two non-protease inhibitor antiretroviral drugs, optimized using baseline genotypic resistance testing. All patients initially received Aptivus oral solution. Of the 110 enrolled subjects, 83 (75%) completed the 48 week period. At 48 weeks, 40% of subjects had viral load <400 copies/mL. The proportion of subjects with viral load <400 copies/mL tended to be greater (70%) in the youngest group, who had less baseline viral resistance, compared to the older groups (37% and 31%). A greater proportion of subjects receiving Aptivus/ritonavir 375 mg/m2/150 mg/m2 compared to 290 mg/m2/115 mg/m2 achieved HIV-1 RNA < 400 and < 50 copies/mL. A greater proportion of subjects 6 to18 years of age with multiple baseline protease inhibitor resistance-associated substitutions receiving Aptivus/ritonavir 375 mg/m2/150 mg/m2 achieved HIV-1 RNA <400 copies/mL at 48 weeks compared to those receiving Aptivus/ritonavir 290 mg/m2/115 mg/m2. No clinically significant increase in adverse event rates observed with 375 mg/m2/150 mg/m2 compared to 290 mg/m2/115 mg/m2.

    Side Effects

    Adverse events associated with the use of Aptivus in adults may include, but are not limited to, the following:

    • Diarrhea
    • Nausea
    • Pyrexia
    • Vomiting
    • Fatigue
    • Headache
    • Abdominal pain
    • Hypertriglyceridemia
    • Anemia

    Adverse events associated with the use of Aptivus in pediatrics may include, but are not limited to, the following:

    • Pyrexia
    • Vomiting
    • Cough
    • Rash
    • Nausea
    • Diarrhea
    • Epistaxis

    Mechanism of Action

    Tipranavir is an HIV-1 protease inhibitor that inhibits the virus-specific processing of the viral Gag and Gag-Pol polyproteins in HIV-1 infected cells, thus preventing formation of mature virions. Tipranavir demonstrates antiviral activity in cell culture against a broad panel of HIV-1 group M nonclade B isolates (A, C, D, F, G, H, CRF01 AE, CRF02 AG, CRF12 BF). Group O and HIV-2 isolates have reduced susceptibility in cell culture to tipranavir with EC50 values ranging from 0.164 -1 µM and 0.233-0.522 µM, respectively.

    Literature References

    Walmsley SL, Katlama C, Lazzarin A, Arestéh K, Pierone G, Blick G, Johnson M, Meier U, MacGregor TR, Leith JG Pharmacokinetics, safety, and efficacy of tipranavir boosted with ritonavir alone or in combination with other boosted protease inhibitors as part of optimized combination antiretroviral therapy in highly treatment-experienced patients (BI Study 1182.51). Journal of acquired immune deficiency syndromes 2008 Apr 1;47(4):429-40

    Markowitz M, Slater LN, Schwartz R, Kazanjian PH, Hathaway B, Wheeler D, Goldman M, Neubacher D, Mayers D, Valdez H, McCallister S. Long-term efficacy and safety of tipranavir boosted with ritonavir in HIV-1-infected patients failing multiple protease inhibitor regimens: 80-week data from a phase 2 study. Journal of acquired immune deficiency syndromes 2007 Aug 1;45(4):401-10

    Gathe JC Jr, Pierone G, Piliero P, Arasteh K, Rubio R, Lalonde RG, Cooper D, Lazzarin A, Kohlbrenner VM, Dohnanyi C, Sabo J, Mayers D Efficacy and safety of three doses of tipranavir boosted with ritonavir in treatment-experienced HIV type-1 infected patients. AIDS research and human retroviruses 2007 Feb;23(2):216-23

    Hicks CB, Cahn P, Cooper DA, Walmsley SL, Katlama C, Clotet B, Lazzarin A, Johnson MA, Neubacher D, Mayers D, Valdez H; RESIST investigator group Durable efficacy of tipranavir-ritonavir in combination with an optimised background regimen of antiretroviral drugs for treatment-experienced HIV-1-infected patients at 48 weeks in the Randomized Evaluation of Strategic Intervention in multi-drug reSistant patients with Tipranavir (RESIST) studies: an analysis of combined data from two randomised open-label trials. Lancet 2006 Aug 5;368(9534):466-75

    Doyon L, Tremblay S, Bourgon L, Wardrop E, Cordingley MG Selection and characterization of HIV-1 showing reduced susceptibility to the non-peptidic protease inhibitor tipranavir. Antiviral Research 2005 Oct;68(1):27-35

    MacGregor TR, Sabo JP, Norris SH, Johnson P, Galitz L, McCallister S Pharmacokinetic characterization of different dose combinations of coadministered tipranavir and ritonavir in healthy volunteers. HIV clinical trials 2004 Nov-Dec;5(6):371-82

    Additional Information

    For additional information regarding Aptivus or HIV, please visit the Aptivus web page.

    Approval Date: 2008-06-01
    Company Name: Boehringer Ingelheim
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