Comparative Pharmacokinetics (PK) Study of Efavirenz or Lopinavir/Ritonavir Between Older and Younger HIV-Infected Adults

Completed

• Conditions: HIV Infections

• Registration Number: NCT00179335
• Lead Sponsor: Albert Einstein College of Medicine

Brief Summary

HIV infected patients, aged \</= 35 years and aged \>/= 55 years, who are regularly taking either efavirenz (EFV) or lopinavir/ritonavir (Lop/r) as part of their antiretroviral regimen are being asked to spend 12 hours at the researchers' clinic (the ACS clinic at Jacobi Medical Center, Bronx, New York) for an intensive pharmacokinetic study in which 5 cc of blood will be drawn 9 times over a 12 hour period. Patients taking EFV will return for one additional blood draw the following day.

Detailed Description

HIV infected patients, aged \</= 35 years and aged \>/= 55 years, who are regularly taking either efavirenz or lopinavir/ritonavir as part of their antiretroviral regimen are being asked to spend 12 hours at our clinic (the ACS clinic at Jacobi Medical Center, Bronx, NY) for an intensive pharmacokinetic study in which 5 cc of blood will be drawn 9 times over a 12 hour period. Patients taking EFV will return for one additional blood draw the following day.

Patients will be asked to come to the clinic at 7 am and bring their medication to the clinic. Blood will be drawn to obtain a trough level of either EFV or Lop/r after which the patient will be instructed to take their EFV or Lop/r. Then blood will be drawn 1 hour, 2 hours, 3 hours, 4 hours, 6 hours, 8 hours, 10 hours and 12 hours later. Patients on EFV will be asked to return the next morning for a 24 hour blood level.

The blood will be spun and the plasma frozen at - 70 C. The plasma samples, labelled with the patients' initials and the draw date, will be shipped to University of Alabama, Department of Pharmacology, where the drug levels will be measured.

Patients will be recruited from the ACS outpatient clinic. They will be identified by their providers.

Study Timeline

• Study Start: 2003-08
• Study First Submitted: 2005-09-10
• Study First Submitted QC: 2005-09-10
• Study First Posted: 2005-09-16
• Primary Completion: 2006-01
• Study Completion: 2006-09
• Status Verified: 2021-04
• Last Update Submitted: 2021-04-22
• Last Update Posted: 2021-04-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 45

Inclusion Criteria

• HIV+
• Taking lopinavir/ritonavir or efavirenz
• Age </= 35 years or >/= 55 years

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Exclusion Criteria

• Concurrent therapy with drugs that alter lopinavir/ritonavir levels.
• Other renal or kidney disease.
• Chronic hepatitis B or C

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Trial Locations

Locations (1)

Jacobi Medical Center ACS Clinic; 🇺🇸 Bronx, New York, United States