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DRUGS & SUPPLEMENTS
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What are the side effects you encounter while taking this medicine? |
Clinicalhepatitis and hepatic decompensation, including some fatalities, havebeen reported. Extra vigilance is warranted in patients with chronichepatitis B or hepatitis C co-infection, as these patients have anincreased risk of hepatotoxicity [ see Warnings and Precautions (5.1) ].
Intracranial Hemorrhage:
Both fatal and non-fatal intracranialhemorrhage have been reported [ see Warnings and Precautions (5.2) ].
WARNING: HEPATOTOXICITY andINTRACRANIAL HEMORRHAGE
See full prescribinginformation for complete boxed warning.
Contraindications, Drug Interactions (4.2) | 9/2016 |
This indication is based on analyses of plasma HIV-1RNA levels in two controlled studies of APTIVUS/ritonavir of 48 weeksduration in treatment-experienced adults and one open-label 48-weekstudy in pediatric patients age 2 to 18 years. The adult studies wereconducted in clinically advanced, 3-class antiretroviral (NRTI, NNRTI,PI) treatment-experienced adults with evidence of HIV-1 replicationdespite ongoing antiretroviral therapy.
The following points should be considered when initiatingtherapy with APTIVUS/ritonavir:
Aptivus, a protease inhibitor, co-administeredwith ritonavir, is indicated for combination antiretroviral treatmentof HIV-1 infected patients who are treatment-experienced and infectedwith HIV-1 strains resistant to more than one protease inhibitor (1)
Aptivus may be administered as either capsules or oralsolution to either pediatric or adult patients.
Due to the need for co-administration of Aptivus withritonavir, please refer to the ritonavir prescribing information.
Prescribers should calculate the appropriate dose of Aptivus foreach individual child based on body weight (kg) or body surface area(BSA, m2) and should not exceed the recommendedadult dose.
Before prescribingAPTIVUS 250 mg capsules, children should be assessed for the abilityto swallow capsules. If a child is unable to reliably swallow an APTIVUScapsule, the Aptivus oral solution formulation should be prescribed.
The recommended pediatric dose of APTIVUSis 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 mgco-administered with ritonavir 200 mg twice daily. For children whodevelop intolerance or toxicity and cannot continue with Aptivus 14mg/kg with 6 mg/kg ritonavir, physicians may consider decreasing thedose 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 resistantto multiple protease inhibitors [ see Adverse Reactions (6.2), Use in Specific Populations (8.4), and Clinical Studies (14.2) ].
Body surface area can be calculated as follows:
Oral solution:100 mg/mL, yellow, viscous clear liquid with a buttermint-butter toffeeflavor
Table 1 Drugs that are Contraindicatedwith Aptivus Co-Administered with Ritonavir
DrugClass | Drugs withinClass that are Contraindicated with Aptivus Co-administeredwith Ritonavir | ClinicalComments: |
Alpha 1-adrenoreceptor antagonist | Alfuzosin | Potentially increased alfuzosin concentrationscan result in hypotension. |
Antiarrhythmics | Amiodarone, bepridil, flecainide,propafenone, quinidine | Potential for serious and/or life-threateningreactions such as cardiac arrhythmias secondary to increases in plasmaconcentrations of antiarrhythmics. |
Antimycobacterials | Rifampin | May lead to loss of virologic responseand possible resistance to Aptivus or to the class of protease inhibitorsor other co-administered antiretroviral agents. |
Ergot derivatives | Dihydroergotamine, ergonovine,ergotamine, methylergonovine | Potential for acute ergot toxicity characterizedby peripheral vasospasm and ischemia of the extremities and othertissues. |
GI motility agent | Cisapride | Potential for cardiac arrhythmias. |
Herbal products | St. John's wort (hypericumperforatum) | May lead to loss of virologic responseand possible resistance to Aptivus or to the class of protease inhibitors. |
HMG CoA reductase inhibitors | Lovastatin, simvastatin | Potential for myopathy including rhabdomyolysis. |
Antipsychotics | Pimozide Lurasidone | Potential for cardiac arrhythmias. Potential for serious and/or life-threatening reactions. |
PDE-5 inhibitors | Sildenafil (Revatio) [fortreatment of pulmonary arterial hypertension] | A safe and effective dose has not beenestablished when used with APTIVUS/ritonavir. There is increased potentialfor sildenafil-associated adverse events (which include visual disturbances,hypotension, prolonged erection, and syncope). |
Sedatives/hypnotics | Oral midazolam, triazolam | Prolonged or increased sedation or respiratorydepression. |
Allpatients should be followed closely with clinical and laboratory monitoring,especially those with chronic hepatitis B or C co-infection, as thesepatients have an increased risk of hepatotoxicity. Liver functiontests should be performed prior to initiating therapy with APTIVUS/ritonavir,and frequently throughout the duration of treatment.
If asymptomatic elevations in AST or ALT greater than10 times the upper limit of normal occur, APTIVUS/ritonavir therapyshould be discontinued. If asymptomatic elevations in AST or ALT between5 – 10 times the upper limit of normal and increases in total bilirubingreater than 2.5 times the upper limit of normal occur, APTIVUS/ritonavirtherapy should be discontinued.
Treatment-experienced patients with chronic hepatitis B or hepatitisC co-infection or elevated transaminases are at approximately 2-foldrisk for developing Grade 3 or 4 transaminase elevations or hepaticdecompensation. In two large, randomized, open-label, controlled clinicaltrials with an active comparator (1182.12 and 1182.48) of treatment-experiencedpatients, Grade 3 and 4 increases in hepatic transaminases were observedin 10.3% (10.9/100 PEY) receiving APTIVUS/ritonavir through week 48.In a study of treatment-naïve patients, 20.3% (21/100 PEY) experiencedGrade 3 or 4 hepatic transaminase elevations while receiving APTIVUS/ritonavir500 mg/200 mg through week 48.
Aptivus is principally metabolized by the liver. Caution shouldbe exercised when administering APTIVUS/ritonavir to patients withmild hepatic impairment (Child-Pugh Class A) because Aptivus concentrationsmay be increased [ see Clinical Pharmacology (12.3) ].
In rats, Aptivus treatmentalone induced dose-dependent changes in coagulation parameters, bleedingevents and death. Co-administration with vitamin E significantly increasedthese effects [ see Nonclinical Toxicology ]. However, analysesof stored plasma from adult patients treated with Aptivus capsulesand pediatric patients treated with Aptivus oral solution (which containsa vitamin E derivative) showed no effect of APTIVUS/ritonavir on vitaminK-dependent coagulation factors (Factor II and Factor VII), FactorV, or on prothrombin or activated partial thromboplastin times.
In in vitro experiments, Aptivus was observed to inhibit human plateletaggregation at levels consistent with exposures observed in patientsreceiving APTIVUS/ritonavir.
Autoimmunedisorders (such as Graves’ disease, polymyositis, and Guillain-Barrésyndrome) have also been reported to occur in the setting of immunereconstitution, however, the time to onset is more variable, and canoccur many months after initiation of treatment.
Because clinical trials are conducted under widely varyingconditions, adverse reaction rates observed in the clinical trialsof a drug cannot be directly compared to rates in the clinical trialsof another drug and may not reflect the rates observed in clinicalpractice.
In 1182.12and 1182.48 in the APTIVUS/ritonavir arm, the most frequent adversereactions were diarrhea, nausea, pyrexia, vomiting, fatigue, headache,and abdominal pain. The 48-Week Kaplan-Meier rates of adverse reactionsleading to discontinuation were 13.3% for APTIVUS/ritonavir-treatedpatients and 10.8% for the comparator arm patients.
Adverse reactions reported in the controlled clinicaltrials 1182.12 and 1182.48, based on treatment-emergent clinical adversereactions of moderate to severe intensity (Grades 2 - 4) in at least2% of treatment-experienced subjects in either treatment group aresummarized in Table 2 below.
Percentage ofpatients (rate per 100 patient-exposure years) | ||
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APTIVUS/ritonavir (500/200mg BID) + OBRc (n=749;757.4 patient-exposure years) | Comparator PI/ritonavirb + OBR (n=737; 503.9 patient-exposure years) | |
a Excludeslaboratory abnormalities that were Adverse Events | ||
b Comparator PI/ritonavir:lopinavir/ritonavir 400/100 mg BID, indinavir/ritonavir 800/100 mgBID, saquinavir/ritonavir 1000/100 mg BID, amprenavir/ritonavir 600/100mg BID | ||
c Optimized BackgroundRegimen | ||
Blood and Lymphatic Disorders | ||
Anemia | 3.3% (3.4) | 2.3% (3.4) |
Neutropenia | 2.0% (2.0) | 1.0% (1.4) |
Gastrointestinal Disorders | ||
Diarrhea | 15.0% (16.5) | 13.4% (21.6) |
Nausea | 8.5% (9.0) | 6.4% (9.7) |
Vomiting | 5.9% (6.0) | 4.1% (6.1) |
Abdominal pain | 4.4% (4.5) | 3.4% (5.1) |
Abdominal pain upper | 1.5% (1.5) | 2.3% (3.4) |
General Disorders | ||
Pyrexia | 7.5% (7.7) | 5.4% (8.2) |
Fatigue | 5.7% (5.9) | 5.6% (8.4) |
Investigations | ||
Weight decreased | 3.1% (3.1) | 2.2% (3.2) |
ALT increased | 2.0% (2.0) | 0.5% (0.8) |
GGT increased | 2.0% (2.0) | 0.4% (0.6) |
Metabolism and Nutrition Disorders | ||
Hypertriglyceridemia | 3.9% (4.0) | 2.0% (3.0) |
Hyperlipidemia | 2.5% (2.6) | 0.8% (1.2) |
Dehydration | 2.1% (2.1) | 1.1% (1.6) |
Musculoskeletal and Connective TissueDisorders | ||
Myalgia | 2.3% (2.3) | 1.8% (2.6) |
Nervous System Disorders | ||
Headache | 5.2% (5.3) | 4.2% (6.3) |
Peripheral neuropathy | 1.5% (1.5) | 2.0% (3.0) |
Psychiatric Disorders | ||
Insomnia | 1.7% (1.7) | 3.7% (5.5) |
Respiratory, Thoracic and MediastinalDisorders | ||
Dyspnea | 2.1% (2.1) | 1.0% (1.4) |
Skin and Subcutaneous Tissue Disorders | ||
Rash | 3.1% (3.1) | 3.8% (5.7) |
Other adverse reactions reportedin <2% of adult patients (n=1474) treated with APTIVUS/ritonavir500/200 mg in Phase 2 and 3 clinical trials are listed below by bodysystem:
Bloodand Lymphatic System Disorders : thrombocytopenia
Gastrointestinal Disorders : abdominal distension, dyspepsia, flatulence, gastroesophagealreflux disease, pancreatitis
General Disorders : influenza-like illness,malaise
HepatobiliaryDisorders : hepatitis, hepatic failure, hyperbilirubinemia,cytolytic hepatitis, toxic hepatitis, hepatic steatosis
Immune System Disorders : hypersensitivity
Investigations : hepatic enzymes increased,liver function test abnormal, lipase increased
Metabolism and Nutrition Disorders : anorexia, decreased appetite, diabetes mellitus, facialwasting, hyperamylasemia, hypercholesterolemia, hyperglycemia, mitochondrialtoxicity
Musculoskeletaland Connective Tissue Disorders : muscle cramp
Nervous System Disorders : dizziness, intracranial hemorrhage, somnolence
Psychiatric Disorders : sleep disorder
Renal and Urinary Disorders : renalinsufficiency
Skin and Subcutaneous System Disorders : exanthem,lipoatrophy, lipodystrophy acquired, lipohypertrophy, pruritus
LaboratoryAbnormalities
Treatment-emergent laboratoryabnormalities reported at 48 weeks in the controlled clinical trials1182.12 and 1182.48 in adults are summarized in Table 3 below.
Randomized, ControlledClinical Trials 1182.12 and 1182.48 | ||||
---|---|---|---|---|
Percentage ofPatients (rate per 100 patient-exposure years) | ||||
Limit | APTIVUS/ritonavir (500/200mg BID) + OBR (n=738) | Comparator PI/ritonavir +OBR* (n=724) | ||
*Comparator PI/ritonavir: lopinavir/ritonavir 400/100mg BID, indinavir/ritonavir 800/100 mg BID, saquinavir/ritonavir 1000/100mg BID, amprenavir/ritonavir 600/100 mg BID | ||||
Hematology | ||||
WBC count decrease Grade 3 | <2.0 x 103/μL | 5.4% (5.6) | 4.8% (7.7) | |
Grade 4 | <1.0 x 103/μL | 0.3% (0.3) | 1.1% (1.7) | |
Chemistry | ||||
Amylase Grade 3 | >2.5 x ULN | 5.7% (5.9) | 6.4% (10.4) | |
Grade 4 | >5 x ULN | 0.3% (0.3) | 0.7% (1.1) | |
ALT Grade 2 | >2.5-5 x ULN | 14.9% (16.5) | 7.5% (12.4) | |
Grade 3 | >5-10 x ULN | 5.6% (5.7) | 1.7% (2.6) | |
Grade 4 | >10 x ULN | 4.1% (4.1) | 0.4% (0.7) | |
AST Grade 2 | >2.5-5 x ULN | 9.9% (10.5) | 8.0% (13.3) | |
Grade 3 | >5-10 x ULN | 4.5% (4.6) | 1.4% (2.2) | |
Grade 4 | >10 x ULN | 1.6% (1.6) | 0.4% (0.6) | |
ALT and/or AST Grade 2-4 | >2.5 x ULN | 26.0% (31.5) | 13.7% (23.8) | |
Cholesterol Grade 2 | >300 – 400 mg/dL | 15.6% (17.7) | 6.4% (10.5) | |
Grade 3 | >400 – 500 mg/dL | 3.3% (3.3) | 0.3% (0.4) | |
Grade 4 | >500 mg/dL | 0.9% (1.0) | 0.1% (0.2) | |
Triglycerides Grade 2 | 400 – 750 mg/dL | 35.9% (49.9) | 26.8% (51.0) | |
Grade 3 | >750 – 1200 mg/dL | 16.9% (19.4) | 8.7% (14.6) | |
Grade 4 | >1200 mg/dL | 8.0% (8.4) | 4.3% (7.0) |
The adverse reactions profile seen in Study1182.14 was similar to adults. Pyrexia (6.4%), vomiting (5.5%), cough(5.5%), rash (5.5%), nausea (4.5%), and diarrhea (3.6%) were the mostfrequently reported adverse reactions (Grade 2-4, all causes) in pediatricpatients. Rash was reported more frequently in pediatric patientsthan in adults.
The most commonGrade 3-4 laboratory abnormalities were increases in CPK (11%), ALT(6.5%), and amylase (7.5%).
Dueto previous reports of both fatal and non-fatal intracranial hemorrhage(ICH), an analysis of bleeding events was performed. At 48 weeks oftreatment, the frequency of pediatric patients with any bleeding adversereactions was 7.5%. No drug related serious bleeding adverse reactionwas reported. The most frequent bleeding adverse reaction was epistaxis(3.7%). No other bleeding adverse reaction was reported in frequencyof >1%. Additional trial follow-up through 100 weeks showed a cumulative12% frequency of any bleeding adverse reaction.
Co-administration of Aptivus can alter theconcentrations of other drugs and other drugs may alter the concentrationof Aptivus. The potential for drug-drug interactions must be consideredprior to and during therapy. (4.2, 5.3, 7)
Clinically significant drug-druginteractions of Aptivus co-administered with ritonavir are summarizedin Table 4 below.
A phenotypiccocktail study was conducted with 16 healthy volunteers to quantifythe influence of 10 days of APTIVUS/ritonavir capsule administrationon the activity of hepatic CYP 1A2 (caffeine), 2C9 (warfarin), 2C19(omeprazole), 2D6 (dextromethorphan) and the activity of intestinaland hepatic CYP 3A4/5 (midazolam) and P-glycoprotein (P-gp) (digoxin).This study determined the first-dose and steady-state effects of 500mg of Aptivus co-administered with 200 mg of ritonavir twice dailyin capsule form. Aptivus oral solution co-administered with ritonavircapsules demonstrated similar effects as Aptivus capsules co-administratedwith ritonavir.
There was nonet effect on CYP 2C9 or hepatic P-gp at first dose or steady state. There was no net effect after first dose on CYP 1A2, but there wasmoderate induction at steady state. There was modest inhibition ofCYP 2C19 at the first dose, but there was marked induction at steadystate. Potent inhibition of CYP 2D6 and both hepatic and intestinalCYP 3A4/5 activities were observed after first dose and steady state.
Intestinal and hepatic P-gp activity wasassessed by administering oral and intravenous digoxin, respectively. The digoxin results indicate P-gp was inhibited after the first doseof APTIVUS/ritonavir followed by induction of P-gp over time. Thus,it is difficult to predict the net effect of Aptivus administeredwith ritonavir on oral bioavailability and plasma concentrations ofdrugs that are dual substrates of CYP 3A and P-gp. The net effectwill vary depending on the relative affinity of the co-administereddrugs for CYP 3A and P-gp, and the extent of intestinal first-passmetabolism/efflux. An in vitro induction study in human hepatocytes showed an increase in UGT1A1by Aptivus similar to that evoked by rifampin. The clinical consequencesof this finding have not been established.
Clinically significantdrug-drug interactions of Aptivus co-administered with ritonavir aresummarized in Table 4 below.
Table 4 Established and OtherPotentially Significant Drug Interactions: Alterations in Dose orRegimen May be Recommended Based on Drug Interaction Studies or PredictedInteraction
↑ increase, ↓ decrease, ↔ no change,↕ unable to predict | ||
Concomitant Drug Class: Drug name | Effect onConcentration of Aptivus or Concomitant Drug | Clinical Comment |
HIV-1 AntiviralAgents | ||
Fusion Inhibitors: | ||
Enfuvirtide | ↑ Aptivus | At steady state, Aptivus trough concentrationswere approximately 45% higher in patients co-administered enfuvirtidein the Phase 3 trials. The mechanism for this increase is not known. Dose adjustments are not recommended. |
Non-NucleosideReverse Transcriptase | ||
Inhibitors: | ||
Etravirine | ↓ Etravirine | APTIVUS/ritonavir when coadministered with etravirinemay cause a significant decrease in the plasma concentrations of etravirineand loss of therapeutic effect of etravirine. Etravirine and APTIVUS/ritonavirshould not be coadministered. |
Rilpivirine | The use of rilpivirine co-administered with APTIVUS/ritonavirhas not been studied. | Concomitant use of rilpivirine with Aptivus/ritonavir may causean increase in the plasma concentrations of rilpivirine (inhibitionof CYP3A enzymes). Rilpivirine is not expected to affect the plasmaconcentrations of Aptivus/ritonavir. |
Nucleoside ReverseTranscriptase | ||
Inhibitors: | ||
Abacavir | ↓ Abacavir AUC by approximately 40% | Clinical relevance of reduction in abacavir levelsnot established. Dose adjustment of abacavir cannot be recommendedat this time. |
Didanosine (EC) | ↓ Didanosine | Clinical relevance of reduction in didanosine levels not established. For optimal absorption, didanosine should be separated from APTIVUS/ritonavirdosing by at least 2 hours. |
Zidovudine | ↓ Zidovudine AUC by approximately 35%. ZDV glucuronideconcentrations were unaltered. | Clinical relevance of reduction in zidovudine levels not established. Dose adjustment of zidovudine cannot be recommended at this time. |
Protease Inhibitors (co-administeredwith 200 mg of ritonavir):
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Fosamprenavir Lopinavir Saquinavir | ↓ Amprenavir ↓ Lopinavir ↓Saquinavir | Combining a protease inhibitor with APTIVUS/ritonaviris not recommended. |
Protease Inhibitors (co-administeredwith 100 mg of ritonavir):
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Atazanavir | ↓ Atazanavir ↑ Aptivus | |
Virus Integrase Strand Transfer Inhibitors:
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Raltegravir | ↓ Raltegravir | APTIVUS/ritonavir reduces plasmaconcentrations of raltegravir. Since comparable efficacy was observedfor this combination in phase 3 studies, dose adjustment is not recommended. |
Agents for Opportunistic Infections | ||
Antifungals:
| ||
Fluconazole Itraconazole Ketoconazole Voriconazole | ↑ Aptivus, ↔ Fluconazole | Fluconazole increases Aptivus concentrations butdose adjustments are not needed. Fluconazole doses >200 mg/day arenot recommended. |
↑ Itraconazole (not studied) | ||
↑ Ketoconazole (not studied) | Based on theoretical considerations itraconazoleand ketoconazole should be used with caution. High doses (>200 mg/day)are not recommended. | |
↕ Voriconazole (not studied) | ||
Due to multiple enzymes involvedwith voriconazole metabolism, it is difficult to predict the interaction. | ||
Antimycobacterials:
| ||
Clarithromycin | ↑ Aptivus, ↑ Clarithromycin, ↓ 14-hydroxy-clarithromycinmetabolite | No dose adjustment of Aptivus or clarithromycin forpatients with normal renal function is necessary.
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For patients with renal impairment the following dosage adjustmentsshould be considered:
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Rifabutin | Aptivus not changed, ↑ Rifabutin ↑ Desacetyl-rifabutin | Single dose study. Dosage reductions of rifabutin by 75% are recommended(e.g., 150 mg every other day). Increased monitoring for adverse eventsin patients receiving the combination is warranted. Further dosagereduction may be necessary. |
Other AgentsCommonly Used | ||
Anticonvulsants:
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Carbamazepine Phenobarbital Phenytoin | ↓ Aptivus | Caution should be used when prescribing carbamazepine,phenobarbital and/or phenytoin. Aptivus may be less effective dueto decreased Aptivus plasma concentration in patients taking theseagents concomitantly. |
Valproic Acid | ↓ Valproic Acid | Caution should be used when prescribing valproicacid. Valproic acid may be less effective due to decreased valproicacid plasma concentration in patients taking Aptivus concomitantly. |
Antidepressants: | ||
Trazodone | ↑ Trazodone | Concomitant use of trazodone and APTIVUS/ritonavir may increaseplasma concentrations of trazodone. Adverse events of nausea, dizziness,hypotension, and syncope have been observed following co-administrationof trazodone and ritonavir. If trazodone is used with a CYP 3A4 inhibitorsuch as APTIVUS/ritonavir, the combination should be used with cautionand a lower dose of trazodone should be considered. |
Desipramine | Combination with APTIVUS/ritonavir not studied ↑ Desipramine | Dosage reduction and concentration monitoring ofdesipramine is recommended. |
Selective Serotonin-Reuptake Inhibitors: | Combination with APTIVUS/ritonavir not studied | Antidepressants have a wide therapeutic index, butdoses may need to be adjusted upon initiation of APTIVUS/ritonavirtherapy. |
Fluoxetine Paroxetine Sertraline | ↑ Fluoxetine ↑ Paroxetine ↑Sertraline | |
Anti-HCV agents: | ||
Boceprevir | Co-administration of Aptivus and boceprevir has notbeen studied. | With concomitant use, changes in exposure were observed both forboceprevir and certain protease inhibitors used for the treatmentof HIV-1 infection or either medication. Information is not availableregarding Aptivus or boceprevir exposure with concomitant use. It is not recommended to co-administer boceprevir with APTIVUS/ritonavir. |
Telaprevir | Co-administration of Aptivus and telaprevir has notbeen studied. | With concomitant use, changes in exposure were observed both fortelaprevir and certain protease inhibitors used for the treatmentof HIV-1 infection or telaprevir. Information is not available regardingtipranavir or telaprevir exposure with concomitant use. It is notrecommended to co-administer telaprevir with APTIVUS/ritonavir. |
Anti-gout: | ||
Colchicine | ↑ Colchicine | In patients with renal or hepatic impairment, coadministrationof colchicine in patients on APTIVUS/ritonavir is contraindicated. In combination with APTIVUS/ritonavir, the followingdosage adjustments are recommended in patients with normal renal andhepatic function:
|
Antipsychotics: | ||
Quetiapine | ↑ Quetiapine | Initiation of Aptivus with ritonavir in patients takingquetiapine: Consider alternativeantiretroviral therapy to avoid increases in quetiapine exposures. If coadministration is necessary, reduce the quetiapine dose to 1/6of the current dose and monitor for quetiapine-associated adversereactions. Refer to the quetiapine prescribing information for recommendationson adverse reaction monitoring. Initiation of quetiapine in patients taking Aptivus with ritonavir: Refer to the quetiapine prescribing informationfor initial dosing and titration of quetiapine. |
Benzodiazepines: | ||
Parenterally administered midazolam | ↑ Midazolam | Midazolam is extensively metabolized by CYP 3A4.Increases in the concentration of midazolam are expected to be significantlyhigher with oral than parenteral administration. Therefore, APTIVUSshould not be given with orally administered midazolam [ see Contraindications (4) ]. If Aptivus is co-administered with parenteral midazolam,close clinical monitoring for respiratory depression and/or prolongedsedation should be exercised and dosage adjustments should be considered. |
Buprenorphine/naloxone | ↔ Buprenorphine ↓ Aptivus | APTIVUS/ritonavir did not resultin changes in the clinical efficacy of buprenorphine/naloxone. Comparedto historical controls Aptivus Cmin wasdecreased approximately 40% with this combination. Dose adjustmentscannot be recommended. |
Calcium ChannelBlockers: Diltiazem Felodipine Nicardipine Nisoldipine Verapamil | Combination with APTIVUS/ritonavirnot studied. Cannot predict effect of TPV/ritonavir on calcium channelblockers that are dual substrates of CYP3A and P-gp due to conflictingeffect of TPV/ritonavir on CYP3A and P-gp. ↕Diltiazem ↑ Felodipine (CYP3A substrate but not P-gp substrate) ↕ Nicardipine ↕ Nisoldipine (CYP3A substrate but notclear whether it is a P-gp substrate) ↕ Verapamil | Caution is warranted and clinicalmonitoring of patients is recommended. |
Disulfiram/Metronidazole | Combination with TPV/ritonavirnot studied | Aptivus capsules contain alcohol that can producedisulfiram-like reactions when co-administered with disulfiram orother drugs which produce this reaction (e.g., metronidazole). |
Endothelin receptor antagonists Bosentan | ↑ Bosentan | In patientswho have been receiving APTIVUS/ritonavir for at least 10 days, startbosentan at 62.5 mg once daily or every other day based upon individualtolerability. Discontinue use of bosentan at least 36 hoursprior to initiation of APTIVUS/ritonavir. Afterat least 10 days following the initiation of APTIVUS/ritonavir, resumebosentan at 62.5 mg once daily or every other day based upon individualtolerability. |
HMG-CoA ReductaseInhibitors:
| ||
Atorvastatin Rosuvastatin | ↑ Atorvastatin ↓ Hydroxy-atorvastatinmetabolites ↑ Rosuvastatin | Avoid co-administration with atorvastatin. |
Hypoglycemics:
| ||
Combination with APTIVUS/ritonavir not studied | Careful glucose monitoring is warranted. | |
Glimepiride Glipizide Glyburide Pioglitazone | ↔ Glimepiride (CYP 2C9) ↔ Glipizide (CYP 2C9) ↔ Glyburide (CYP 2C9) ↕ Pioglitazone (CYP 2C8 and CYP3A4) | |
Repaglinide | ↕ Repaglinide (CYP 2C8 and CYP 3A4) | |
Tolbutamide | ↔ Tolbutamide (CYP 2C9) Theeffect of TPV/ritonavir on CYP 2C8 substrate is not known. | |
Immunosuppressants: | ||
Combination with APTIVUS/ritonavir not studied. Cannotpredict effect of TPV/ritonavir on immunosuppressants due to conflictingeffect of TPV/ritonavir on CYP 3A and P-gp. | Increased frequency of monitoring of plasma levelsof immunosuppressant drugs is recommended. | |
Cyclosporine Sirolimus Tacrolimus | ↕ Cyclosporine ↕ Sirolimus ↕ Tacrolimus | |
Inhaled betaagonist: Salmeterol | ↑Salmeterol | Concurrent administration of APTIVUS/ritonaviris not recommended. The combination may result in increased risk ofcardiovascular adverse events associated with salmeterol, includingQT prolongation, palpitations, and sinus tachycardia. |
Inhaled/Nasal Steroids:
| ||
Fluticasone | ↑ Fluticasone | Concomitant use of fluticasonepropionate and APTIVUS/ritonavir may increase plasma concentrationsof fluticasone propionate, resulting in significantly reduced serumcortisol concentrations. Co-administration of fluticasone propionateand APTIVUS/ritonavir is not recommended unless the potential benefitto the patient outweighs the risk of systemic corticosteroid sideeffects. |
Narcotic Analgesics:
| ||
Combinations with APTIVUS/ritonavir not studied | Dosage increase and long-term use ofmeperidine are not recommended due to increased concentrations ofthe metabolite normeperidine which has both analgesic activity andCNS stimulant activity (e.g., seizures). | |
Meperidine | ↓ Meperidine, ↑ Normeperidine | |
Methadone | ↓ Methadone ↓ S-Methadone,↓ R-Methadone | Dosage of methadone may need to be increased whenco-administered with Aptivus and 200 mg of ritonavir. |
Oral Contraceptives/Estrogens:
| ||
Ethinyl estradiol | ↓ Ethinyl estradiol concentrations by 50% | Alternative methods of nonhormonal contraceptionshould be used when estrogen based oral contraceptives are co-administeredwith Aptivus and 200 mg of ritonavir. Patients using estrogens ashormone replacement therapy should be clinically monitored for signsof estrogen deficiency. Women using estrogens may have an increasedrisk of non-serious rash. |
Proton Pump Inhibitors: | ||
Omeprazole | ↓ Omeprazole, ↔ Aptivus | Dosage of omeprazole may need to be increased whenco-administered with Aptivus and ritonavir. |
PDE-5 Inhibitors: | ||
Sildenafil Tadalafil Vardenafil | Only the combination of tadalafil with APTIVUS/ritonavirhas been studied (at doses used for treatment of erectile dysfunction). | Co-administration with APTIVUS/ritonavir may resultin an increase in PDE-5 inhibitor-associated adverse events, includinghypotension, syncope, visual disturbances, and priapism. |
↑ Sildenafil (not studied) ↑ Tadalafil with first dose APTIVUS/ritonavir ↔ Tadalafilat APTIVUS/ritonavir steady-state ↑ Vardenafil (not studied) |
| |
Concomitant use of PDE-5 inhibitors with APTIVUS/ritonavirshould be used with caution and in no case should the starting doseof:
| ||
Warfarin | ↔ S-Warfarin | Frequent INR (internationalnormalized ratio) monitoring upon initiation of APTIVUS/ritonavirtherapy. |
Investigation of fertility and early embryonic developmentwith Aptivus disodium was performed in rats, teratogenicity studieswere performed in rats and rabbits, and pre- and post-natal developmentwere explored in rats.
No teratogenicitywas detected in reproductive studies performed in pregnant rats andrabbits up to dose levels of 1000 mg/kg/day and 150 mg/kg/day Aptivus,respectively, at exposure levels approximately 1.1-fold and 0.1-foldhuman exposure. At 400 mg/kg/day and above in rats, fetal toxicity(decreased sternebrae ossification and body weights) was observed,corresponding to an AUC of 1310 μM·h or approximately 0.8-fold humanexposure at the recommended dose. In rats and rabbits, fetal toxicitywas not noted at 40 mg/kg/day and 150 mg/kg/day, respectively, correspondingaccordingly to Cmax/AUC0-24h levels of 30.4 μM/340 μM·h and 8.4 μM/120 μM·h. These exposure levels(AUC) are approximately 0.2-fold and 0.1-fold the exposure in humansat the recommended dose.
In pre-and post-development studies in rats, Aptivus showed no adverseeffects at 40 mg/kg/day (~0.2-fold human exposure), but caused growthinhibition in pups and maternal toxicity at dose levels of 400 mg/kg/day(~0.8-fold human exposure). No post-weaning functions were affectedat any dose level.
There areno adequate and well-controlled studies in pregnant women for thetreatment of HIV-1 infection. Aptivus should be used during pregnancyonly if the potential benefit justifies the potential risk to thefetus.
AntiretroviralPregnancy Registry
To monitor maternal-fetaloutcomes of pregnant women exposed to Aptivus, an Antiretroviral PregnancyRegistry has been established. Physicians are encouraged to registerpatients by calling (800) 258-4263.
The most frequent adversereactions (grades 2-4) were similar to those described in adults. However, rash was reported more frequently in pediatric patients thanin adults [ see Warnings and Precautions (5.6) and Adverse Reactions (6.2) ].
The risk-benefit has not been established in pediatricpatients <2 years of age.
The chemical name of Aptivus is 2-Pyridinesulfonamide,N-[3-[(1R)-1-[(6R)-5,6-dihydro-4-hydroxy-2-oxo-6-(2-phenylethyl)-6-propyl-2H-pyran-3-yl]propyl]phenyl]-5-(trifluoromethyl).It has a molecular formula of C31H33F3N2O5S and a molecular weight of 602.7. Aptivus has thefollowing structural formula and is a single stereoisomer with the1R, 6R configuration.
Aptivus is a white to off-whiteto slightly yellow solid. It is freely soluble in dehydrated alcoholand propylene glycol, and insoluble in aqueous buffer at pH 7.5.
Aptivus soft gelatin capsules are for oraladministration. Each capsule contains 250 mg Aptivus. The majorinactive ingredients in the capsule are dehydrated alcohol (7% w/wor 0.1 g per capsule), polyoxyl 35 castor oil, propylene glycol, mono/diglyceridesof caprylic/capric acid and gelatin.
Aptivus oral solution is available in a strength of100 mg/mL of Aptivus. Aptivus oral solution is a yellow, viscousclear liquid with a buttermint-butter toffee flavor. The major inactiveingredients in the oral solution are polyethylene glycol 400, vitaminE polyethylene glycol succinate (TPGS), purified water, and propyleneglycol. Each milliliter of Aptivus oral solution contains 116 IU ofvitamin E, and when taken at the recommended maximum dose of 500 mg/200mg tipranavir/ritonavir BID results in a daily dose of 1160 IU.
Theeffect of APTIVUS/ritonavir on the QTcF interval was measured in astudy in which 81 healthy subjects received the following treatmentstwice daily for 2.5 days: APTIVUS/ritonavir (500/200 mg), APTIVUS/ritonavirat a supra-therapeutic dose (750/200 mg), and placebo/ritonavir (-/200mg). After baseline and placebo adjustment, the maximum mean QTcFchange was 3.2 ms (1-sided 95% Upper CI: 5.6 ms) for the 500/200 mgdose and 8.3 ms (1-sided 95% Upper CI: 10.9 ms) for the supra-therapeutic750/200 mg dose.
Antiviral Activity in vivo
The medianInhibitory Quotient (IQ) determined from 264 treatment-experiencedadult patients was about 80 (inter-quartile range: 31-226), from thecontrolled clinical trials 1182.12 and 1182.48. The IQ is definedas the Aptivus trough concentration divided by the viral EC50 value, corrected for protein binding. There was arelationship between the proportion of patients with a ≥1 log10 reduction of viral load from baseline at week 48 andtheir IQ value. Among the 198 patients receiving APTIVUS/ritonavirwith no new enfuvirtide use (e.g., new enfuvirtide, defined as initiationof enfuvirtide for the first time), the response rate was 23% in thosewith an IQ value <80 and 59% in those with an IQ value ≥80. Amongthe 66 patients receiving APTIVUS/ritonavir with new enfuvirtide,the response rates in patients with an IQ value <80 versus thosewith an IQ value ≥80 were 55% and 71%, respectively. These IQ groupsare derived from a select population and are not meant to representclinical breakpoints.
Figure 1 displaysmean plasma concentrations of Aptivus and ritonavir at steady statefor 30 HIV-1 infected adult patients dosed with 500/200 mg tipranavir/ritonavirfor 14 days.
Figure 1 Mean Steady State Aptivus Plasma Concentrations(95% CI) with Ritonavir Co-administration (tipranavir/ritonavir 500/200mg BID)
Dosing Aptivus 500 mg with 200 mg ritonavircapsules twice daily for greater than 2 weeks and without meal restrictionproduced the pharmacokinetic parameters for male and female HIV-1positive patients presented in Table 5.
Table 5 Pharmacokinetic Parametersa of tipranavir/ritonavir 500/200 mg for HIV-1 PositivePatients by Gender
Parameter | Females (n=14) | Males (n=106) |
---|---|---|
a Population pharmacokineticparameters reported as mean ± standard deviation | ||
Cptrough (μM) | 41.6 ± 24.3 | 35.6 ± 16.7 |
Cmax (μM) | 94.8 ± 22.8 | 77.6 ± 16.6 |
Tmax (h) | 2.9 | 3.0 |
AUC0-12h (μM-h) | 851 ± 309 | 710 ± 207 |
CL (L/h) | 1.15 | 1.27 |
V (L) | 7.7 | 10.2 |
t1/2 (h) | 5.5 | 6.0 |
No studies have been conducted to determinethe distribution of Aptivus into human cerebrospinal fluid or semen.
Theoral clearance of Aptivus decreased after the addition of ritonavir,which may represent diminished first-pass clearance of the drug atthe gastrointestinal tract as well as the liver.
The metabolism of Aptivus in the presence of 200mg ritonavir is minimal. Administration of 14C-tipranavir to subjects that received APTIVUS/ritonavir 500/200mg dosed to steady-state demonstrated that unchanged Aptivus accountedfor 98.4% or greater of the total plasma radioactivity circulatingat 3, 8, or 12 hours after dosing. Only a few metabolites were foundin plasma, and all were at trace levels. In feces, unchanged Aptivus represented the majorityof fecal radioactivity (79.9% of fecal radioactivity). The most abundantfecal metabolite, at 4.9% of fecal radioactivity (3.2% of dose), wasa hydroxyl metabolite of Aptivus. In urine, unchanged tipranavirwas found in trace amounts (0.5% of urine radioactivity). The mostabundant urinary metabolite, at 11.0% of urine radioactivity (0.5%of dose) was a glucuronide conjugate of Aptivus.
Aptivus pharmacokinetics have not been studied in patientswith renal dysfunction. However, since the renal clearance of tipranaviris negligible, a decrease in total body clearance is not expectedin patients with renal insufficiency.
In a study comparing 9 HIV-1 negative patients with mild hepatic impairment to 9 HIV-1 negative controls,the single and multiple dose plasma concentrations of Aptivus andritonavir were increased in patients with hepatic impairment, butwere within the range observed in clinical trials. No dosing adjustmentis required in patients with mild hepatic impairment.
The influence of moderate hepatic impairment (Child-PughClass B) or severe hepatic impairment (Child-Pugh Class C) on themultiple-dose pharmacokinetics of Aptivus administered with ritonavirhas not been evaluated [ see Dosage and Administration (2), Contraindications (4.1), and Warnings and Precautions (5.1) ].
Evaluationof steady-state plasma Aptivus trough concentrations at 10-14 hafter dosing from the controlled clinical trials 1182.12 and 1182.48demonstrated that females generally had higher Aptivus concentrationsthan males. After 4 weeks of APTIVUS/ritonavir 500/200 mg BID, themedian plasma trough concentration of Aptivus was 43.9 μM for femalesand 31.1 μM for males. The difference in concentrations does not warranta dose adjustment.
Evaluation of steady-stateplasma Aptivus trough concentrations at 10-14 h after dosing fromthe controlled clinical trials 1182.12 and 1182.48 demonstrated thatwhite males generally had more variability in Aptivus concentrationsthan black males, but the median concentration and the range makingup the majority of the data are comparable between the races.
Evaluation of steady-state plasma tipranavirtrough concentrations at 10-14 h after dosing from the controlledclinical trials 1182.12 and 1182.48 demonstrated that there was nochange in median trough Aptivus concentrations as age increasedfor either gender through 65 years of age. There were an insufficientnumber of women greater than age 65 years in the two trials to evaluatethe elderly.
Among pediatricpatients in clinical trial 1182.14, steady-state plasma tipranavirtrough concentrations were obtained 10 to 14 hours following studydrug administration. Pharmacokinetic parameters by age group are presentedin Table 6.
Parameter | 2 to <6years (n=12) | 6 to <12years (n=8) | 12 to 18 years (n=6) |
---|---|---|---|
a Population pharmacokineticparameters reported as mean ± standard deviation | |||
Cptrough (μM) | 59.6 ± 23.6 | 66.3 ± 12.5 | 53.3 ± 32.4 |
Cmax (μM) | 135 ± 44 | 151 ± 32 | 138 ± 52 |
Tmax (h) | 2.5 | 2.6 | 2.7 |
AUC0-12h (μM-h) | 1190 ± 332 | 1354 ± 256 | 1194 ± 517 |
CL/F (L/h) | 0.34 | 0.45 | 0.99 |
V (L) | 4.0 | 4.7 | 5.3 |
t1/2 (h) | 8.1 | 7.1 | 5.2 |
Table 7 Drug Interactions: PharmacokineticParameters for Aptivus in the Presence of Co-administered Drugs
Co-administered Drug | Co-administered Drug Dose (Schedule) | tipranavir/ritonavir Drug Dose (Schedule) | n | PK | Ratio (90% Confidence Interval) of Aptivus PharmacokineticParameters with/without Co-administered Drug; No Effect = 1.00 | ||
---|---|---|---|---|---|---|---|
Cmax | AUC | Cmin | |||||
*steady state comparison to historicaldata (n) ↑ increase, ↓ decrease, ↔ no change, ↕ unableto predict | |||||||
Antacids (Maalox®) | 20 mL (1 dose) | 500/200 mg (1 dose) | 23 | ↓ | 0.75 (0.63, 0.88) | 0.73 (0.64, 0.84) | - |
Atazanavir/ritonavir | 300/100 mg QD (9 doses) | 500/100 mg BID (34 doses) | 13 | ↑ | 1.08 (0.98, 1.20) | 1.20 (1.09, 1.32) | 1.75 (1.39, 2.20) |
Atorvastatin | 10 mg (1 dose) | 500/200 mg BID (14 doses) | 22 | ↔ | 0.96 (0.86, 1.07) | 1.08 (1.00, 1.15) | 1.04 (0.89, 1.22) |
Clarithromycin | 500 mg BID (25 doses) | 500/200 mg BID* | 24 (68) | ↑ | 1.40 (1.24, 1.47) | 1.66 (1.43, 1.73) | 2.00 (1.58, 2.47) |
Didanosine | 400 mg (1 dose) | 500/100 mg BID (27 doses) | 5 | ↓ | 1.32 (1.09, 1.60) | 1.08 (0.82, 1.42) | 0.66 (0.31, 1.43) |
Efavirenz | 600 mg QD (8 doses) | 500/100 mg BID* | 21 (89) | ↓ | 0.79 (0.69, 0.89) | 0.69 (0.57, 0.83) | 0.58 (0.36, 0.86) |
750/200 mg BID* | 25 (100) | ↔ | 0.97 (0.85, 1.09) | 1.01 (0.85, 1.18) | 0.97 (0.69, 1.28) | ||
Ethinyl estradiol /Norethindrone | 0.035/1.0 mg (1 dose) | 500/100 mg BID (21 doses) | 21 | ↓ | 1.10 (0.98, 1.24) | 0.98 (0.88, 1.11) | 0.73 (0.59, 0.90) |
750/200 mg BID (21 doses) | 13 | ↔ | 1.01 (0.96, 1.06) | 0.98 (0.90, 1.07) | 0.91 (0.69, 1.20) | ||
Fluconazole | 100 mg QD (12 doses) | 500/200 mg BID* | 20 (68) | ↑ | 1.32 (1.18, 1.47) | 1.50 (1.29, 1.73) | 1.69 (1.33, 2.09) |
Loperamide | 16 mg (1 dose) | 750/200 mg BID (21 doses) | 24 | ↓ | 1.03 (0.92, 1.17) | 0.98 (0.86, 1.12) | 0.74 (0.62, 0.88) |
Rifabutin | 150 mg (1 dose) | 500/200 mg BID (15 doses) | 21 | ↔ | 0.99 (0.93, 1.07) | 1.00 (0.96, 1.04) | 1.16 (1.07, 1.27) |
Rosuvastatin | 10 mg (1 dose) | 500/200 mg BID (24 doses) | 16 | ↔ | 1.08 (1.00, 1.17) | 1.06 (0.97, 1.15) | 0.99 (0.88, 1.11) |
Tadalafil | 10 mg (1 dose) | 500/200 mg BID (17 doses) | 17 | ↔ | 0.90 (0.80, 1.01) | 0.85 (0.74, 0.97) | 0.81 (0.70, 0.94) |
Tenofovir | 300 mg (1 dose) | 500/100 mg BID | 22 | ↓ | 0.83 (0.74, 0.94) | 0.82 (0.75, 0.91) | 0.79 (0.70, 0.90) |
750/200 mg BID (23doses) | 20 | ↔ | 0.89 (0.84, 0.96) | 0.91 (0.85, 0.97) | 0.88 (0.78, 1.00) | ||
Valacyclovir | 500 mg (1 dose) | 500/200 mg BID (23doses) | 26 | ↔ | 1.02 (0.95, 1.10) | 1.01 (0.96, 1.06) | 0.98 (0.93, 1.04) |
Zidovudine | 300 mg (1 dose) | 500/100 mg BID | 29 | ↓ | 0.87 (0.80, 0.94) | 0.82 (0.76, 0.89) | 0.77 (0.68, 0.87) |
750/200 mg BID (23doses) | 25 | ↔ | 1.02 (0.94, 1.10) | 1.02 (0.92, 1.13) | 1.07 (0.86, 1.34) |
Co-administered Drug | Co-administeredDrug Dose (Schedule) | tipranavir/ritonavirDrug Dose (Schedule) | n | PK | Ratio (90% ConfidenceInterval) of Co-administered Drug Pharmacokinetic Parameterswith/without tipranavir/ritonavir; No Effect= 1.00 | ||
---|---|---|---|---|---|---|---|
Cmax | AUC | Cmin | |||||
a HIV-1 positivepatients b Buprenorphine/Naloxonemaintenance patients c HIV-1positive patients (tipranavir/ritonavir 250 mg/200 mg, 750 mg/200mg and 1250 mg/100 mg) and healthy volunteers (tipranavir/ritonavir500 mg/100 mg and 750 mg/200 mg) d Normalized sum of parent drug (rifabutin) and active metabolite(25-O-desacetyl-rifabutin) e Intensive PK analysis f Druglevels obtained at 8-16 hrs post-dose g n = 14 for Cmin h Administered as Valacyclovir ↑ increase, ↓ decrease,↔ no change, ↕ unable to predict | |||||||
Abacavira | 300 mg BID (43 doses) | 250/200 mg BID 750/100 mg BID 1250/100 mg BID (42 doses) | 28 14 11 | ↓ ↓ ↓ | 0.56 (0.48, 0.66) 0.54 (0.47, 0.63) 0.48 (0.42, 0.53) | 0.56 (0.49, 0.63) 0.64 (0.55, 0.74) 0.65 (0.55, 0.76) | - - - |
Acyclovirh | 500 mg (1 dose) | 500/200 mg BID (23doses) | 26 | ↔ | 0.95 (0.88, 1.02) | 1.07 (1.04, 1.09) | - |
Amprenavir/ritonavira | 600/100 mg BID (27doses) | 500/200 mg BID (28doses) | 16 74 | ↓ ↓ | 0.61 (0.51, 0.73)e | 0.56 (0.49, 0.64)e - | 0.45 (0.38, 0.53)e 0.44 (0.39, 0.49)f |
Atazanavir/ritonavir | 300/100 mg QD (9doses) | 500/100 mg BID (34doses) | 13 | ↓ | 0.43 (0.38, 0.50) | 0.32 (0.29, 0.36) | 0.19 (0.15, 0.24) |
Atorvastatin | 10 mg (1 dose) | 500/200 mg BID (17doses) | 22 | ↑ | 8.61 (7.25, 10.21) | 9.36 (8.02, 10.94) | 5.19 (4.21, 6.40) |
Orthohydroxy-atorvastatin | 21, 12, 17 | ↓ | 0.02 (0.02, 0.03) | 0.11 (0.08, 0.17) | 0.07 (0.06, 0.08) | ||
Parahydroxy-atorvastatin | 13, 22, 1 | ↓ | 1.04 (0.87, 1.25) | 0.18 (0.14, 0.24) | 0.33 (NA) | ||
Buprenorphine/ Naloxoneb | 16/4 mg 24/6 mg (daily) | 500/200 mg BID (16doses) | |||||
Buprenorphine | 10 | ↔ | 0.86 (0.68, 1.10) | 0.99 (0.80, 1.23) | 0.94 (0.74, 1.19) | ||
Carbamazepine | 100 mg BID (29 doses) | 500/200 mg (1 dose) | 7 | ↔ | 1.04 (1.00, 1.07) | 1.05 (1.02, 1.09) | 1.17 (1.11, 1.24) |
(43 doses) | (15 doses) | 7 | ↔ | 1.10 (0.85, 1.42) | 1.08 (0.91, 1.27) | 1.07 (0.90, 1.27) | |
200 mg BID (29 doses) | 500/200 mg (1 dose) | 17 | ↔ | 1.00 (0.96, 1.04) | 1.04 (1.00, 1.08) | 1.16 (1.11, 1.22) | |
(43 doses) | (15 doses) | 17 | ↑ | 1.22 (1.11, 1.34) | 1.26 (1.15, 1.38) | 1.35 (1.22, 1.50) | |
Clarithromycin | 500 mg BID (25doses) | 500/200 mg BID (15doses) | 21 | ↑ | 0.95 (0.83, 1.09) | 1.19 (1.04, 1.37) | 1.68 (1.42, 1.98) |
14-OH-clarithromycin | 21 | ↓ | 0.03 (0.02, 0.04) | 0.03 (0.02, 0.04) | 0.05 (0.04, 0.07) | ||
Didanosinec | 200 mg BID, ≥60 kg 125 mg BID, <60 kg (43 doses) | 250/200 mg BID 750/100mg BID 1250/100 mg BID (42 doses) | 10 8 9 | ↓ ↔ ↔ | 0.57 (0.42, 0.79) 0.76 (0.49, 1.17) 0.77 (0.47, 1.26) | 0.67 (0.51, 0.88) 0.97 (0.64, 1.47) 0.87 (0.47, 1.65) | - - - |
400 mg (1 dose) | 500/100 mg BID (27doses) | 5 | ↔ | 0.80 (0.63, 1.02) | 0.90 (0.72, 1.11) | 1.17 (0.62, 2.20) | |
Efavirenzc | 600 mg QD (15 doses) | 500/100 mg BID 750/200mg BID (15 doses) | 24 22 | ↔ ↔ | 1.09 (0.99, 1.19) 1.12 (0.98, 1.28) | 1.04 (0.97, 1.12) 1.00 (0.93, 1.09) | 1.02 (0.92, 1.12) 0.94 (0.84, 1.04) |
Ethinyl estradiol | 0.035 mg (1 dose) | 500/100 mg BID 750/200mg BID (21 doses) | 21 13 | ↓ ↓ | 0.52 (0.47, 0.57) 0.48 (0.42, 0.57) | 0.52 (0.48, 0.56) 0.57 (0.54, 0.60) | - - |
Fluconazole | 200 mg (Day 1) then 100 mg QD (6 or 12 doses) | 500/200 mg BID (2or 14 doses) | 19 19 | ↔ ↔ | 0.97 (0.94, 1.01) 0.94 (0.91, 0.98) | 0.99 (0.97, 1.02) 0.92 (0.88, 0.95) | 0.98 (0.94, 1.02) 0.89 (0.85, 0.92) |
Lopinavir/ritonavira | 400/100 mg BID (27doses) | 500/200 mg BID (28doses) | 21 69 | ↓ ↓ | 0.53 (0.40, 0.69)e - | 0.45 (0.32, 0.63)e - | 0.30 (0.17, 0.51)e 0.48 (0.40, 0.58)f |
Loperamide | 16 mg (1 dose) | 750/200 mg BID (21doses) | 24 | ↓ | 0.39 (0.31, 0.48) | 0.49 (0.40, 0.61) | - |
N-Demethyl-Loperamide | 24 | ↓ | 0.21 (0.17, 0.25) | 0.23 (0.19, 0.27) | - | ||
Lamivudinea | 150 mg BID (43doses) | 250/200 mg BID 750/100mg BID 1250/100 mg BID (42 doses) | 64 46 35 | ↔ ↔ ↔ | 0.96 (0.89, 1.03) 0.86 (0.78, 0.94) 0.71 (0.62, 0.81) | 0.95 (0.89, 1.02) 0.96 (0.90, 1.03) 0.82 (0.66, 1.00) | - - - |
Methadone | 5 mg (1 dose) | 500/200 mg BID (16 doses) | 14 | ↓ | 0.45 (0.41, 0.49) | 0.47 (0.44, 0.51) | 0.50 (0.46, 0.54) |
R-methadone | 0.54 (0.50, 0.58) | 0.52 (0.49, 0.56) | - | ||||
S-methadone | 0.38 (0.35, 0.43) | 0.37 (0.34, 0.41) | - | ||||
Nevirapinea | 200 mg BID (43doses) | 250/200 mg BID 750/100mg BID 1250/100 mg BID (42 doses) | 26 22 17 | ↔ ↔ ↔ | 0.97 (0.90, 1.04) 0.86 (0.76, 0.97) 0.71 (0.62, 0.82) | 0.97 (0.91, 1.04) 0.89 (0.78, 1.01) 0.76 (0.63, 0.91) | 0.96 (0.87, 1.05) 0.93 (0.80, 1.08) 0.77 (0.64, 0.92) |
Norethindrone | 1.0 mg (1 dose) | 500/100 mg BID 750/200mg BID (21 doses) | 21 13 | ↔ ↔ | 1.03 (0.94, 1.13) 1.08 (0.97, 1.20) | 1.14 (1.06, 1.22) 1.27 (1.13, 1.43) | - - |
Raltegravir | 400 mg BID | 500/200 mg BID | 15 | ↓ | 0.82 (0.46, 1.46) | 0.76 (0.49, 1.19) | 0.45 (0.31, 0.66)g |
Rifabutin | 150 mg (1 dose) | 500/200 mg BID (15 doses) | 20 | ↑ | 1.70 (1.49, 1.94) | 2.90 (2.59, 3.26) | 2.14 (1.90, 2.41) |
25-O-desacetyl-rifabutin | 20 | ↑ | 3.20 (2.78, 3.68) | 20.71 (17.66, 24.28) | 7.83 (6.70, 9.14) | ||
Rifabutin + 25-O- desacetyl-rifabutind | 20 | ↑ | 1.86 (1.63, 2.12) | 4.33 (3.86, 4.86) | 2.76 (2.44, 3.12) | ||
Rosuvastatin | 10 mg (1 dose) | 500/200 mg BID (24doses) | 16 | ↑ | 2.23 (1.83, 2.72) | 1.26 (1.08, 1.46) | 1.06 (0.93, 1.20) |
Saquinavir/ritonavira | 600/100 mg BID (27doses) | 500/200 mg BID (28doses) | 20 68 | ↓ ↓ | 0.30 (0.23, 0.40)e - | 0.24 (0.19, 0.32)e - | 0.18 (0.13, 0.26)e 0.20 (0.16, 0.25)f |
Stavudinea | 40 mg BID ≥60 kg 30 mg BID <60 kg (43 doses) | 250/200 mg BID 750/100mg BID 1250/100 mg BID (42 doses) | 26 22 19 | ↔ ↔ ↔ | 0.90 (0.81, 1.02) 0.76 (0.66, 0.89) 0.74 (0.69, 0.80) | 1.00 (0.91, 1.11) 0.84 (0.74, 0.96) 0.93 (0.83, 1.05) | - - - |
Tadalafil | 10 mg (1 dose) | 500/200 mg (1 dose) | 17 | ↑ | 0.78 (0.72, 0.84) | 2.33 (2.02, 2.69) | - |
10 mg (1 dose) | 500/200 mg BID (17doses) | 17 | ↔ | 0.70 (0.63, 0.78) | 1.01 (0.83, 1.21) | - | |
Tenofovir | 300 mg (1 dose) | 500/100 mg BID 750/200mg BID (23 doses) | 22 20 | ↓ ↓ | 0.77 (0.68, 0.87) 0.62 (0.54, 0.71) | 0.98 (0.91, 1.05) 1.02 (0.94, 1.10) | 1.07 (0.98, 1.17) 1.14 (1.01, 1.27) |
Zidovudinec | 300 mg BID 300mg BID 300 mg BID (43 doses) | 250/200 mg BID 750/100mg BID 1250/100 mg BID (42 doses) | 48 31 23 | ↓ ↓ ↓ | 0.54 (0.47, 0.62) 0.51 (0.44, 0.60) 0.49 (0.40, 0.59) | 0.58 (0.51, 0.66) 0.64 (0.55, 0.75) 0.69 (0.49, 0.97) | - - - |
300 mg (1 dose) | 500/100 mg BID 750/200mg BID (23 doses) | 29 25 | ↓ ↔ | 0.39 (0.33, 0.45) 0.44 (0.36, 0.54) | 0.57 (0.52, 0.63) 0.67 (0.62, 0.73) | 0.89 (0.81, 0.99) 1.25 (1.08, 1.44) | |
Zidovudine glucuronide | 500/100 mg BID 750/200mg BID (23 doses) | 29 25 | ↑ ↑ | 0.82 (0.74, 0.90) 0.82 (0.73, 0.92) | 1.02 (0.97, 1.06) 1.09 (1.05, 1.14) | 1.52 (1.34, 1.71) 1.94 (1.62, 2.31) |
Aptivus (TPV) is an HIV-1 protease inhibitorthat inhibits the virus-specific processing of the viral Gag and Gag-Polpolyproteins in HIV-1 infected cells, thus preventing formation ofmature virions.
Antiviral Activity
Aptivus inhibitsthe replication of laboratory strains of HIV-1 and clinical isolatesin acute models of T-cell infection, with 50% effective concentrations(EC50) ranging from 0.03 to 0.07 μM (18-42ng/mL). Aptivus demonstrates antiviral activity in cell cultureagainst a broad panel of HIV-1 group M non-clade B isolates (A, C,D, F, G, H, CRF01 AE, CRF02 AG, CRF12 BF). Group O and HIV-2 isolateshave reduced susceptibility in cell culture to Aptivus with EC50 values ranging from 0.164 -1 μM and 0.233-0.522 μM,respectively. When used with other antiretroviral agents in cell culture,the combination of Aptivus was additive to antagonistic with otherprotease inhibitors (amprenavir, atazanavir, indinavir, lopinavir,nelfinavir, ritonavir, and saquinavir) and generally additive withthe NNRTIs (delavirdine, efavirenz, and nevirapine) and the NRTIs(abacavir, didanosine, emtricitabine, lamivudine, stavudine, tenofovir,and zidovudine). Aptivus was synergistic with the HIV-1 fusioninhibitor enfuvirtide. There was no antagonism of the cell culturecombinations of Aptivus with either adefovir or ribavirin, usedin the treatment of viral hepatitis.
Resistance
HIV-1 isolates with a decreased susceptibility to Aptivus havebeen selected in cell culture and obtained from patients treated withAPTIVUS/ritonavir (TPV/ritonavir). After 9 months of culture in TPV-containingmedia, HIV-1 isolates with 87-fold reduced susceptibility to tipranavirwere selected in cell culture; these contained 10 protease substitutionsthat developed in the following order: L33F, I84V, K45I, I13V, V32I,V82L, M36I, A71V, L10F, and I54V/T. Changes in the Gag polyproteinCA/P2 cleavage site were also observed following drug selection. Experimentswith site-directed mutants of HIV-1 showed that the presence of 6substitutions in the protease coding sequence (I13V, V32I, L33F, K45I,V82L, I84V) conferred >10-fold reduced susceptibility to Aptivus.
Incontrolled clinical trials 1182.12 and 1182.48, multiple proteaseinhibitor-resistant HIV-1 isolates from 59 treatment-experienced adultpatients who received APTIVUS/ritonavir and experienced virologicrebound developed amino acid substitutions that were associated withresistance to Aptivus. The most common amino acid substitutionsthat developed on 500/200 mg APTIVUS/ritonavir in greater than 20%of APTIVUS/ritonavir virologic failure isolates were L33V/I/F, V82T,and I84V. Other substitutions that developed in 10 to 20% of APTIVUS/ritonavirvirologic failure isolates included L10V/I/S, I13V, E35D/G/N, I47V,I54A/M/V, K55R, V82L, and L89V/M. Evolution at protease gag polyproteincleavage sites was also observed. Among 28 pediatric patients in clinicaltrial 1182.14 who experienced virologic failure or non-response, theemergent protease amino acid codon substitutions were similar to thoseobserved in adult virologic failure isolates.
In clinical trials 1182.12 and 1182.48 Aptivus resistancewas detected at virologic rebound after an average of 38 weeks ofAPTIVUS/ritonavir treatment with a median 14-fold decrease in tipranavirsusceptibility. Similarly, reduced Aptivus susceptibility was associatedwith emergent mutations in pediatric patient isolates.
Cross-resistance
Cross-resistance among protease inhibitors hasbeen observed. Aptivus had <4-fold decreased susceptibilityagainst 90% (94/105) of HIV-1 clinical isolates resistant to amprenavir,atazanavir, indinavir, lopinavir, nelfinavir, ritonavir, or saquinavir. Tipranavir-resistant viruses which emerged in cell culture from wild-typeHIV-1 had decreased susceptibility to the protease inhibitors amprenavir,atazanavir, indinavir, lopinavir, nelfinavir and ritonavir but remainedsensitive to saquinavir.
Baseline Genotype and Virologic Outcome Analyses
Genotypic and/or phenotypic analysis of baselinevirus may aid in determining Aptivus susceptibility before initiationof APTIVUS/ritonavir therapy. Several analyses were conducted to evaluatethe impact of specific substitutions and combination of substitutionson virologic outcome. Both the type and number of baseline proteaseinhibitor substitutions as well as use of additional active agents(e.g., enfuvirtide) affected APTIVUS/ritonavir response rates in controlledclinical trials 1182.12 and 1182.48 through Week 48 of treatment.
Regression analyses of baseline and/oron-treatment HIV-1 genotypes from 860 treatment-experienced patientsin Phase 2 and 3 trials demonstrated that amino acid substitutionsat 16 codons in the HIV-1 protease coding sequence were associatedwith reduced virologic responses and/or reduced Aptivus susceptibility:L10V, I13V, K20M/R/V, L33F, E35G, M36I, K43T, M46L, I47V, I54A/M/V,Q58E, H69K, T74P, V82L/T, N83D or I84V.
As-treated analyses were also conducted to assess virologicoutcome by the number of primary protease inhibitor substitutionspresent at baseline. Response rates were reduced if five or more proteaseinhibitor-associated substitutions were present at baseline and subjectsdid not receive concomitant new enfuvirtide with APTIVUS/ritonavir. See Table 9.
Table 9 Controlled Clinical Trials 1182.12 and 1182.48: Proportionof Responders (confirmed ≥1 log10 decreaseat Week 48) by Number of Baseline Primary Protease Inhibitor (PI)Resistance Associated Substitutions
Number of Baseline Primary PI Mutationsa | APTIVUS/ritonavir N=578 | Comparator PI/ritonavir N=610 | ||
---|---|---|---|---|
No New Enfuvirtideb | + New Enfuvirtidec | No New Enfuvirtideb | + New Enfuvirtidec | |
a PrimaryPI mutations include any amino acid substitution at positions 30,32, 36, 46, 47, 48, 50, 53, 54, 82, 84, 88 and 90 | ||||
b No new enfuvirtideis defined as recycled or continued use of enfuvirtide or no use ofenfuvirtide | ||||
c New enfuvirtideis defined as initiation of enfuvirtide for the first time | ||||
Overall | 38% (180/470) | 69% (75/108) | 18% (92/524) | 26% (22/86) |
1 - 2 | 62% (24/39) | 60% (3/5) | 33% (14/43) | 0% (0/1) |
3 - 4 | 48% (96/202) | 71% (27/38) | 23% (45/193) | 38% (13/34) |
5 + | 26% (60/229) | 69% (45/65) | 11% (33/288) | 18% (9/51) |
APTIVUS/ritonavirresponse rates were also assessed by baseline Aptivus phenotype. Relationships between baseline phenotypic susceptibility to Aptivus,mutations at protease amino acid codons 33, 82, 84 and 90, tipranavirresistance-associated mutations, and response to APTIVUS/ritonavirtherapy at Week-48 are summarized in Tables 10 and 11. These baselinephenotype groups are not meant to represent clinical susceptibilitybreakpoints for APTIVUS/ritonavir because the data are based on theselect 1182.12 and 1182.48 patient population. The data are providedto give clinicians information on the likelihood of virologic successbased on pre-treatment susceptibility to APTIVUS/ritonavir in proteaseinhibitor-experienced patients.
Table 10 Response by BaselineTipranavir Phenotype at 48 weeks in the Controlled Clinical Trials1182.12 and 1182.48
Baseline Aptivus Phenotype (Fold Change)a | Proportionof Respondersb with No NewEnfuvirtidec Use N=211 | Proportionof Respondersb with New Enfuvirtided Use N=68 | TipranavirSusceptibility |
---|---|---|---|
a Change in Aptivus EC50 value from wild-typereference | |||
b Confirmed ≥1 log10 decrease at Week 48 | |||
c No new enfuvirtide is defined as recycled or continued use of enfuvirtideor no use of enfuvirtide | |||
d New enfuvirtide is defined as initiation of enfuvirtide for thefirst time | |||
0-3 | 48% (73/153) | 70% (33/47) | Susceptible |
>3-10 | 21% (10/48) | 53% (8/15) | Decreased Susceptibility |
>10 | 10% (1/10) | 50% (3/6) | Resistant |
Baseline Aptivus Phenotype (Fold Change)a | # of BaselineProtease Mutations at 33, 82, 84, 90 | # of BaselineTipranavir Resistance-Associated Mutationsb | TipranavirSusceptibilityc |
---|---|---|---|
a Change in Aptivus EC50 value from wild-typereference b Number of aminoacid substitutions in HIV-1 protease among L10V, I13V, K20M/R/V, L33F,E35G, M36I, K43T, M46L, I47V, I54A/M/V, Q58E, H69K, T74P, V82L/T,N83D or I84V c defined by week48 response | |||
0-3 | 0-2 | 0-4 | Susceptible |
>3-10 | 3 | 5-7 | Decreased Susceptibility |
>10 | 4 | 8+ | Resistant |
Tipranavirshowed no evidence of mutagenicity or clastogenicity in a batteryof five in vitro and in vivo tests including the Ames bacterialreverse mutation assay using S. typhimurium and E. coli, unscheduledDNA synthesis in rat hepatocytes, induction of gene mutation in Chinesehamster ovary cells, a chromosome aberration assay in human peripherallymphocytes, and a micronucleus assay in mice.
Aptivus had no effect on fertility or early embryonicdevelopment in rats at dose levels up to 1000 mg/kg/day, equivalentto a Cmax of 258 μM in females. Based on Cmax levels in these rats, as well as an exposure (AUC)of 1670 μM·h in pregnant rats from another study, this exposure wasapproximately equivalent to the anticipated exposure in humans atthe recommended dose level of 500/200 mg APTIVUS/ritonavir BID.
In preclinical studies of Aptivus indogs, an effect on coagulation parameters was not seen. Co-administrationof Aptivus and vitamin E has not been studied in dogs. Clinicalevaluation of coagulation effects on HIV-1-infected patients demonstratedno Aptivus plus ritonavir effect and no effect of the vitamin E-containingoral solution on coagulation parameters [ see Effectson Platelet Aggregation and Coagulation (5.4) ].
APTIVUS/ritonavir 500/200 mg BID + optimized background regimen vs. ComparatorProtease Inhibitor/ritonavir BID + OBR
The two clinical trials 1182.12and 1182.48 (RESIST 1 and RESIST 2) are ongoing, randomized, controlled,open-label, multicenter studies in HIV-1 positive, triple antiretroviralclass experienced patients. All patients were required to have previouslyreceived at least two protease inhibitor-based antiretroviral regimensand were failing a protease inhibitor-based regimen at the time ofstudy entry with baseline HIV-1 RNA at least 1000 copies/mL and anyCD4+ cell count. At least one primary protease gene mutation fromamong 30N, 46I, 46L, 48V, 50V, 82A, 82F, 82L, 82T, 84V or 90M hadto be present at baseline, with not more than two mutations at codons33, 82, 84 or 90.
These studiesevaluated treatment response at 48 weeks in a total of 1483 patientsreceiving either Aptivus co-administered with 200 mg of ritonavirplus OBR versus a control group receiving a ritonavir-boosted proteaseinhibitor (lopinavir, amprenavir, saquinavir or indinavir) plus OBR.Prior to randomization, OBR was individually defined for each patientbased on genotypic resistance testing and patient history. The investigatorhad to declare OBR, comparator protease inhibitor, and use of newenfuvirtide prior to randomization. Randomization was stratified bychoice of comparator protease inhibitor and use of new enfuvirtide.
After Week 8, patients in the control groupwho met the protocol defined criteria of initial lack of virologicresponse or confirmed virologic failure had the option of discontinuingtreatment and switching to APTIVUS/ritonavir in a separate roll-overstudy.
Demographics and baselinecharacteristics were balanced between the APTIVUS/ritonavir arm andcontrol arm. In both studies combined, the 1483 patients had a medianage of 43 years (range 17-80), and were 86.3% male, 75.6% white, 12.9%black, and 0.9% Asian. The median baseline plasma HIV-1 RNA for bothtreatment groups was 4.8 (range 2.0 to 6.8) log10 copies/mL and median baseline CD4+ cell count was 162 (range 1 to1894) cells/mm3. Overall, 38.4% of patientshad a baseline HIV-1 RNA of >100,000 copies/mL, 58.6% had a baselineCD4+ cell count ≤200 cells/mm3, and 57.8%had experienced an AIDS defining Class C event at baseline.
Patients had prior exposure to a medianof 6 NRTIs, 1 NNRTI, and 4 PIs. A total of 10.1% of patients had previouslyused enfuvirtide. In baseline patient samples (n=454), 97% of theHIV-1 isolates were resistant to at least one protease inhibitor,95% of the isolates were resistant to at least one NRTI, and >75%of the isolates were resistant to at least one NNRTI.
The individually pre-selected protease inhibitor basedon genotypic testing and the patient’s medical history was lopinavirin 48.7%, amprenavir in 26.4%, saquinavir in 21.8% and indinavir in3.1% of patients. A total of 85.1% were possibly resistant or resistantto the pre-selected comparator protease inhibitors. Approximately21% of patients used enfuvirtide during the study of which 16.6% inthe APTIVUS/ritonavir arm and 13.2% in the comparator/ritonavir armrepresented first time use of enfuvirtide (new enfuvirtide).
Treatment response and efficacy outcomesof randomized treatment through Week 48 of studies 1182.12 and 1182.48are shown in Table 12.
Table 12 Outcomes of Randomized Treatment Through Week48 (Pooled Studies 1182.12 and 1182.48)
Outcome | APTIVUS/ritonavir(500/200 mg BID) + OBR (N=746) | ComparatorProtease Inhibitor*/ritonavir + OBR (N=737) | |||
---|---|---|---|---|---|
*Comparatorprotease inhibitors were lopinavir, amprenavir, saquinavir or indinavirand 85.1% of patients were possibly resistant or resistant to thechosen protease inhibitors. aPatients achieved and maintained a confirmed ≥1 log10 HIV-1 RNA drop from baseline through Week 48 without prior evidenceof treatment failure. bPatientsdid not achieve a 0.5 log10 HIV-1 RNA dropfrom baseline and did not have viral load <100,000 copies/mL byWeek 8. cDeath only countedif it was the reason for treatment failure. dIncludes patients who were lost to-follow-up, withdrawnconsent, non-adherent, protocol violations, added/changed backgroundantiretroviral drugs for reasons other than tolerability or toxicity,or discontinued while suppressed. | |||||
Virologic Respondersa (confirmed at least 1 log10 HIV-1 RNA below baseline) | 33.8% | 14.9% | |||
Virologic failures | 55.1% | 77.3% | |||
Initial lack of virologic response by Week 8b Rebound Never suppressed | 33.0% 18.9% 3.2% | 57.9% 16.4% 3.0% | |||
Deathc or discontinued due to adverse events | 5.9% | 1.9% | |||
Death Discontinueddue to adverse events | 0.5% 5.4% | 0.3% 1.6% | |||
Discontinued dueto other reasonsd | 5.2% | 5.8% |
Among all randomized and treated patients, the medianchange from baseline in CD4+ cell count at the last measurement upto Week 48 was +23 cells/mm3 in patientsreceiving APTIVUS/ritonavir (N=740) versus +4 cells/mm3 in the comparator PI/ritonavir (N=727) arm.
Patients in the APTIVUS/ritonavir arm achieveda significantly better virologic outcome when APTIVUS/ritonavir wascombined with enfuvirtide. Among patients with new enfuvirtide use,the proportion of patients in the APTIVUS/ritonavir arm compared tothe comparator PI/ritonavir arm with HIV-1 RNA <400 copies/mL was52.4% and 19.6% respectively, and with HIV-1 RNA <50 copies/mLwas 37.3% and 14.4% respectively [ see Clinical Pharmacology (12.2, 12.4) ]. The median change from baseline in CD4+ cellcount at the last measurement up to Week 48 was +89 cells/mm3 in patients receiving APTIVUS/ritonavir in combinationwith newly introduced enfuvirtide (N=124) and +18 cells/mm3 in the comparator PI/ritonavir (N=96) arm.
Demographics and baseline characteristicswere balanced between the APTIVUS/ritonavir dose groups. The 110 randomizedpediatric patients had a median age of 11.7 years (range 2 to 18),and were 57.2% male, 68.1% white, 30% black, and 1.8% Asian. The medianbaseline plasma HIV-1 RNA was 4.7 (range 3.0 to 6.8) log10 copies/mL and median baseline CD4+ cell count was379 (range 2 to 2578) cells/mm3. Overall,37.4% of patients had a baseline HIV-1 RNA of >100,000 copies/mL;28.7% had a baseline CD4+ cell count ≤200 cells/mm3, and 48% had experienced a prior AIDS defining Class C event atbaseline. Patients had prior exposure to a median of 4 NRTIs, 1 NNRTI,and 2 PIs.
Eighty three (75%)completed the 48 week period while 25% discontinued prematurely. Ofthe patients who discontinued prematurely, 9 (8%) discontinued dueto virologic failure, and 9 (8%) discontinued due to adverse reactions.
At 48 weeks, 40% of patients had viralload <400 copies/mL. The proportion of patients with viral load<400 copies/mL tended to be greater (70%) in the youngest groupof patients, who had less baseline viral resistance, compared to theolder groups (37% and 31%). The HIV-1 RNA results are presented inTable 13.
Table13 Proportion of Patients with HIV-1 RNA <400 copies/mL (<50copies/mL) by age and dose*
APTIVUS/ritonavirDose Regimen | 2 to <6 years (N=20) | 6 to <12 years (N=38) | 12 to18 years (N=52) |
---|---|---|---|
* The number of baseline Aptivus resistance-associatedsubstitutions were fewer in the 2 to <6 year old patients thanthe 6 to 18 year old patients enrolled in study 1182.14 | |||
375 mg/m2/150 mg/m2 | n=10 70% (42%) | n=19 50% (39%) | n=26 33% (30%) |
290 mg/m2/115 mg/m2 | n=10 70% (54%) | n=19 37% (32%) | n=26 31% (23%) |
When body surface area (BSA) dosing isconverted to mg/kg dosing, the APTIVUS/ritonavir 375 mg/m2/150 mg/m2 twice dailyregimen is similar to 14 mg/kg/6 mg/kg and APTIVUS/ritonavir 290 mg/m2/115 mg/m2 twice dailyregimen is similar to 12 mg/kg/5 mg/kg twice daily [ see Dosage and Administration (2.2) ].
Aptivus oral solution is a clear yellowviscous buttermint-butter toffee flavored liquid containing 100 mgtipranavir in each mL. The solution is supplied in a unit-of-use amberglass bottle providing 95 mL of solution with a child resistant closure. A 5 mL plastic oral dispensing syringe is also provided. (NDC 0597-0002-01).
Storage
Aptivus capsules should be stored in a refrigerator2°-8°C (36°-46°F) prior to opening the bottle. Afteropening the bottle, the capsules may be stored at25°C (77°F); excursions permitted to 15°-30°C (59°-86°F) and must be used within 60 days after first opening the bottle.
Aptivus oral solution should be stored at 25°C (77°F); excursions permitted to 15°-30°C (59°-86°F).Do not refrigerate or freeze. The solution mustbe used within 60 days after first opening the bottle.
Store in a safe place out of the reachof children.
Inform patients that Aptivus co-administered with 200mg of ritonavir, has been associated with severe liver disease, includingsome deaths. Patients with signs or symptoms of clinical hepatitisshould discontinue APTIVUS/ritonavir treatment and seek medical evaluation. Symptoms of hepatitis include fatigue, malaise, anorexia, nausea,jaundice, bilirubinuria, acholic stools, liver tenderness or hepatomegaly. Extra vigilance is needed for patients with chronic hepatitis B orC co-infection, as these patients have an increased risk of developinghepatotoxicity.
Liver function tests should be performed prior to initiatingtherapy with Aptivus and 200 mg of ritonavir, and frequently throughoutthe duration of treatment. Patients with chronic hepatitis B or Cco-infection or elevations in liver enzymes prior to treatment areat increased risk (approximately 2-fold) for developing further liverenzyme elevations or severe liver disease. Caution should be exercisedwhen administering APTIVUS/ritonavir to patients with liver enzymeabnormalities or history of chronic liver disease. Increased liverfunction testing is warranted in these patients. Aptivus should notbe given to patients with moderate to severe hepatic impairment.
Inform patients that Aptivus co-administered with 200mg of ritonavir has been associated with reports of both fatal andnon-fatal intracranial hemorrhage. Patients should report any unusualor unexplained bleeding to their physician.
Aptivus may interact with some drugs; therefore, advisepatients to report to their healthcare provider the use of any otherprescription or non-prescription medications or herbal products, particularlySt. John’s wort.
Advise patients taking Aptivus oral solution not totake supplemental vitamin E greater than a standard multivitamin asAPTIVUS oral solution contains 116 IU/mL of vitamin E and when takenat the recommended maximum dose of 500 mg/200 mg tipranavir/ritonavirBID, results in a daily dose of 1160 IU. This intake is higher thanthe Reference Daily Intake (adults 30 IU, pediatrics approximately10 IU).
Rash,including flat or raised rashes or sensitivity to the sun, have beenreported in approximately 10% of subjects receiving Aptivus. Somepatients who developed rash also had one or more of the followingsymptoms: joint pain or stiffness, throat tightness, generalized itching,muscle aches, fever, redness, blisters, or peeling of the skin. Womentaking birth control pills may get a skin rash. Tell patients to discontinueuse of Aptivus and call their physician right away if any of thesesymptoms develop.
Tell patients to report any history of sulfonamideallergy to the physician.
Women receiving estrogen-based hormonal contraceptivesshould be instructed that additional or alternative contraceptivemeasures should be used during therapy with APTIVUS/ritonavir. Theremay be an increased risk of rash when Aptivus is given with hormonalcontraceptives.
Inform patients that redistribution or accumulationof body fat may occur in patients receiving antiretroviral therapyand that the cause and long-term health effects of these conditionsare not known at this time.
Inform patients that Aptivus must be co-administeredwith ritonavir to ensure its therapeutic effect. Failure to correctlyco-administer Aptivus with ritonavir will result in reduced plasmalevels of Aptivus that may be insufficient to achieve the desiredantiviral effect.
Aptivus is not a cure for HIV-1 infection and patientsmay continue to experience illnesses associated with HIV-1 infection,including opportunistic infections. Patients should remain under thecare of a physician when using Aptivus.
Patients should be advised to avoid doing things thatcan spread HIV-1 infection to others.
Patientinformation is supplied as a tear-off following the full prescribinginformation.
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Ridgefield,CT 06877 USA
Address medical inquiries to: (800) 542-6257 or (800) 459-9906 TTY.
APTIVUS® is a registeredtrademark used under license from Boehringer Ingelheim InternationalGmbH
Copyright © 2016 BoehringerIngelheim International GmbH
ALL RIGHTS RESERVED
OT2000SI212016
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PatientInformation
APTIVUS®
(tipranavir) capsules 250 mg
APTIVUS®
(tipranavir) oral solution 100 mg/mL
Read the Patient Information that comeswith Aptivus before you start taking it and each time you get a refill. There may be new information. This leaflet does not take the placeof talking with your healthcare professional about your medical conditionor treatment. You should stay under a healthcare professional’s carewhile taking Aptivus.
What is the most important information I should know about Aptivus?
Patientstaking Aptivus, together with 200 mg NORVIR® (ritonavir), may develop severe liver disease that can cause death. If you develop any of the following symptoms of liver problems, youshould stop taking Aptivus and NORVIR® (ritonavir)and call your healthcare professional right away: tiredness, generalill feeling or "flu-like" symptoms, loss of appetite, nausea (feelingsick to your stomach), yellowing of your skin or whites of your eyes,dark (tea-colored) urine, pale stools (bowel movements), or pain,ache, or sensitivity on your right side below your ribs. If you havechronic hepatitis B or C infection, your healthcare professional shouldcheck your blood tests more often because you have an increased chanceof developing liver problems.
Patients taking Aptivus together with200 mg NORVIR® (ritonavir) may developbleeding in the brain that can cause death.
You should report any unusualor unexplained bleeding to your healthcare professional if you aretaking Aptivus together with NORVIR® (ritonavir).
Whatis Aptivus?
Aptivus is a medicine called a "protease inhibitor" that is usedto treat adults with Human Immunodeficiency Virus (HIV). Aptivus blocksHIV protease, an enzyme which is needed for HIV to make more virus. When used with other anti-HIV medicines, Aptivus may reduce the amountof HIV in your blood and increase the number of CD4+ cells. Reducingthe amount of HIV in the blood may keep your immune system healthy,so it can help fight infections.
Aptivus is always taken with NORVIR® (ritonavir)and at the same time as NORVIR. When you take Aptivus with NORVIR,you must always use at least 2 other anti-HIV medicines.
Does Aptivus cure HIV orAIDS?
APTIVUSdoes not cure HIV infection or AIDS and you may continue to experienceillnesses associated with HIV-1 infection, including opportunisticinfections. You should remain under the care of a doctor when usingAPTIVUS.
Avoid doing things thatcan spread HIV-1 infection.
Do not take Aptivus if you:
Tell your healthcareprofessional about all of your medical conditions, including if you:
Women taking birth control pills need to use another birth controlmethod. Aptivus makes birth control pills work less well.
If you are taking Aptivus oral solution,which contains vitamin E, you should not take additional vitamin Eother than that contained in a standard multivitamin.
Know all the medicines you take andkeep a list of them with you. Show this list toall your healthcare professionals and pharmacists anytime you geta new medicine you take. They will tell you if you can take theseother medicines with Aptivus. Do not start any newmedicines while you are taking Aptivus without first talking withyour healthcare professional or pharmacist. Youcan ask your healthcare professional or pharmacist for a list of medicinesthat can interact with Aptivus.
How should I take Aptivus?
Aptivus may cause serious side effects,including:
It may be hard to tell the difference betweenside effects caused by Aptivus, by the other medicines you are alsotaking, or by the complications of HIV infection. For this reasonit is very important that you tell your healthcare professional aboutany changes in your health. You should report any new or continuingsymptoms to your healthcare professional right away. Your healthcareprofessional may be able to help you manage these side effects.
The list of side effects is not complete. Ask your healthcare professionalor pharmacist for more information.
How should I store Aptivus?
Medicinesare sometimes prescribed for purposes other than those listed in aPatient Information leaflet. Do not use Aptivus for a condition forwhich it was not prescribed. Do not give Aptivus to other people,even if they have the same condition you have. It may harm them.
This leaflet summarizes the most importantinformation about Aptivus. If you would like more information, talkwith your healthcare professional. You can ask your pharmacist orhealthcare professional for information about Aptivus that is writtenfor health professionals.
For current prescribing information, scan the code below or for additionalinformation, you may also call Boehringer Ingelheim Pharmaceuticals,Inc. at 1-800-542-6257, or 1-800-459-9906 TTY.
What are the ingredients in Aptivus?
Capsules:
ActiveIngredient: Aptivus
Major Inactive Ingredients: dehydrated alcohol, polyoxyl 35 castor oil, propylene glycol,mono/diglycerides of caprylic/capric acid and gelatin.
Oral Solution:
ActiveIngredient: Aptivus
Major Inactive Ingredients: polyethylene glycol 400, vitamin E polyethylene glycol succinate,purified water, and propylene glycol.
Scan Here Distributed by:
Boehringer Ingelheim Pharmaceuticals, Inc.
Ridgefield,CT 06877 USA
Aptivus® is a registered trademark used under license fromBoehringer Ingelheim International GmbH
Copyright © 2016 Boehringer Ingelheim InternationalGmbH
ALL RIGHTS RESERVED
OT2000SI212016
10003515/15
Revised: September 2016
Aptivus Oral Solution 100 mg/mL Label
NDC 0597–0002–01
Aptivus Capsules 250 mg Label
NDC: 0597–0003–02
Aptivus OralSolution 100 mg/ML Carton
NDC: 0597–0002–01
Aptivus Carton
Depending on the reaction of the Aptivus after taken, if you are feeling dizziness, drowsiness or any weakness as a reaction on your body, Then consider Aptivus not safe to drive or operate heavy machine after consumption. Meaning that, do not drive or operate heavy duty machines after taking the capsule if the capsule has a strange reaction on your body like dizziness, drowsiness. As prescribed by a pharmacist, it is dangerous to take alcohol while taking medicines as it exposed patients to drowsiness and health risk. Please take note of such effect most especially when taking Primosa capsule. It's advisable to consult your doctor on time for a proper recommendation and medical consultations.
Is Aptivus addictive or habit forming?Medicines are not designed with the mind of creating an addiction or abuse on the health of the users. Addictive Medicine is categorically called Controlled substances by the government. For instance, Schedule H or X in India and schedule II-V in the US are controlled substances.
Please consult the medicine instruction manual on how to use and ensure it is not a controlled substance.In conclusion, self medication is a killer to your health. Consult your doctor for a proper prescription, recommendation, and guidiance.
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The information was verified by Dr. Rachana Salvi, MD Pharmacology