Pharmacokinetics of Atorvastatin With Tipranavir/Ritonavir and the Effect of Antacid on the Pharmacokinetics of Single-Dose Tipranavir/Ritonavir in Healthy Volunteers

Condition(s) targeted: Healthy

Intervention: Tipranavir (Drug); Ritonavir (Drug); Atorvastatin (Drug); Maalox (Drug)

Phase: Phase 1

Status: Completed

Sponsored by: Boehringer Ingelheim

Study to determine the effects of combined tipranavir and ritonavir treatment (at steady-state) on the single-dose pharmacokinetics of atorvastatin, the effects of single-dose atorvastatin on the steady-state pharmacokinetics of tipranavir, and the effects of antacid on the pharmacokinetics of tipranavir

Official title: A Two-way Pharmacokinetic Interaction Study of Single-Dose Atorvastatin (LIPITOR®) With Tipranavir/Ritonavir (500mg/200mg) at Steady-State and the Effect of Antacid (MAALOX®) on the Pharmacokinetics of Single-Dose Tipranavir/Ritonavir (500mg/200mg) in Healthy Volunteers

Study design: Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome:

Area under the plasma drug concentration-time curve from time zero to infinity of the analyte (AUC0-∞)

Maximum plasma concentration of the analyte (Cmax)

Drug concentration of the analyte in plasma at 12 hours after administration (Cp12h)

AUC0-12 hours of the analyte

Secondary outcome:

Oral clearance (CL/F)

Volume of distribution (V)

Time of maximum concentration (tmax)

Apparent terminal half life (t1/2)

Mean Residence Time (MRT)

Hepatic cytochrome P450 3A4 activity using the Erythromycin Breath Test

Number of patients with adverse events

Number of patients with clinically relevant changes in laboratory tests

Minimum age: 18 Years. Maximum age: 22 Years. Gender(s): Both.

Criteria:

Inclusion Criteria: 1. Male and female subjects between 18 and 60 years of age inclusive 2. A Body Mass Index (BMI) between 18 and 29 kg/m2 3. Signed informed consent prior to trial participation 4. Ability to swallow numerous study medications 5. Acceptable laboratory values that indicate adequate baseline organ function are required at the time of screening. Laboratory values are considered to be acceptable if severity is less than or equal to Grade 1, based on the AIDS Clinical Trials Group Grading Scale 6. Acceptable medical history, physical examination and ECG, and chest X-ray (if not conducted within the last 12 months) are required prior to entering the treatment phase of the study 7. Willingness to abstain from alcohol starting 2 days prior to any administration study drug up to the end of the study. Red wine must not be ingested within 5 days prior to treatment and throughout the study 8. Willingness to abstain from the following starting 10 days prior to any administration of study drug up until the end of the study: • Grapefruit or grapefruit juice or products containing grapefruit juice 9. Willingness to abstain from ingesting Seville oranges, garlic supplements, St. John's Wort, or Milk Thistle, within 5 days of treatment and for the duration of the study 10. Willingness to abstain from methylxanthine-containing drinks or foods (coffee, tea, cola, energy drinks, chocolate, etc.) within 72 hours of each pharmacokinetic (PK) sampling day and until after the last sample from each of the intensive sampling days is collected 11. Willingness to abstain from over the counter herbal medications for the duration of the study 12. Willingness to abstain from vigorous physical exercise during PK Days 13. Reasonable probability for completion of the study Exclusion Criteria: 1. Female subjects who are of reproductive potential who:

- Have positive serum β-human chorionic gonadotropin at Visit 1, or on Day 0

- Have not been using a barrier contraceptive method for at least 3 months prior

to Day 0 (Visit 2)

- Are not willing to use a reliable method of barrier contraception (such as

diaphragm or condoms), during the trial and 30 days after completion/termination

- Are breast-feeding

2. Use of any pharmacological contraceptive (including oral, patch or injectable contraceptives) for 1 month prior to study initiation and for the duration of the study 3. Use of hormone replacement therapy for 1 month prior to study initiation and for the duration of the study 4. Participation in another trial with an investigational medicine within 60 days prior to Day 0 (Visit 2) 5. Use of any medication listed in the protocol within 30 days prior to Day 0 (Visit 2) 6. Administration of antibiotics within 10 days prior to Day 0 (Visit 2) or during the trial 7. History of acute illness within the past sixty (60) days. Subjects will be excluded for these disorders greater than sixty days if, in the opinion of the investigator, the subject does not qualify as a healthy volunteer 8. Have serological evidence of Hepatitis B or C Virus 9. Have serological evidence of exposure to HIV 10. Recent history of alcohol or substance abuse (within 6 months of study period) 11. Smokers who smoke greater than 10 cigarettes or 3 cigars or 3 pipes per day; inability to refrain from smoking during the trial 12. Blood or plasma donations within 30 days prior to Day 0 (Visit 2) or during the trial 13. Subjects with a seated systolic blood pressure either <100 mm Hg or >150 mm Hg; resting heart rate either <50 beats/min or >90 beats/min 14. Subjects with a history of any illness or allergy that, in the opinion of the investigator,might confound the results of the study or pose additional risk in administering Tipranavir,Ritonavir, atorvastatin or erythromycin to the subject 15. Subjects who are currently taking any over-the-counter drug within 7 days prior to Day 0,(Visit 2) or who are currently taking any prescription drug that, in the opinion of the investigator in consultation with the clinical monitor, might interfere with either the absorption, distribution or metabolism of the test substances 16. Known hypersensitivity to Tipranavir,Ritonavir, sulfonamides, atorvastatin, erythromycin or saccharin 17. Inability to comply with the protocol

Starting date: July 2003
Last updated: September 18, 2014