Transplantation and the Use of Raltegravir in HIV-Infected Patients

August 14, 2017 updated by: Duke University

Solid Organ Transplantation and the Use of Raltegravir in HIV-Infected Patients: An Observational Study of Pharmacokinetics, Safety, Tolerability and Efficacy

Raltegravir (RAL) is a preferred option for initial antiretroviral therapy in the most recent HIV Treatment Guidelines and is emerging as a popular choice for use in the specialized population of HIV-infected patients being considered for solid organ transplantation. Data from HIV-infected persons with normal organ function have revealed few raltegravir-associated metabolic complications compared to older antiretrovirals, and in general, drug-drug interactions with raltegravir are infrequent. The absence of such concerns appears to make raltegravir a potentially appealing option for antiretroviral therapy in HIV-infected patients being considered for solid organ transplantation.

At present, however, little is known of the safety and long term tolerability of RAL-containing regimens in persons undergoing solid organ transplantation. As more HIV-infected patients undergo organ transplantation, there is a growing need for good data on such things as the effect of dialysis on RAL concentrations, the potential interactions with commonly used immunosuppressive drugs, and the pharmacokinetic (PK) /pharmacodynamic (PD) characteristics in those with end stage organ failure, as well as those with functioning grafts.

The proposed study will also examine transplant function and survival in HIV-infected patients receiving RAL-containing ART and will compare it to HIV negative historic controls.

Study Overview

Detailed Description

Pre-transplant:

  • Patients on stable antiretroviral regimens who undergo evaluation for transplantation and are subsequently placed on the transplant waiting list will be considered for inclusion in the study. The details of the cART for each patient will remain the sole purview of the patient and the patient's HIV care provider.
  • To be considered for solid organ transplantation, in addition to routine transplant listing criteria, the patient must fulfill the following criteria:

    1. non-pregnant adult patient with CD4 count >200/μL;
    2. no concurrent active AIDS-defining infections or malignancy;
    3. at least 24 months of well controlled HIV viremia, defined as <50 copies for the majority of the time.

After all screening procedures have been completed to ensure eligibility, a pre-transplant pharmacokinetic study will be done as described below. Using specimens obtained during 7 time points, patient-specific Cmax, Cmin and AUC determinations will be made using standard calculation approaches. The PK data will also include samples drawn on dialysis days for patients with End-stage renal failure:- pre-dialysis, arterial and venous concentrations (Cin and Cout) at the beginning of dialysis, and post dialysis levels (to determine individual hemodialysis extraction ratios).

Additional data to be collected include a Quality of Life questionnaire, SF-36, and a PHQ-9 depression screen which will be administered as a baseline test done at enrollment. Patients will be asked to have a dual-emission X-ray absorptiometry (DEXA) scan prior to transplant (unless this has been completed within two years of enrollment).

Peri-transplant Assessments:

In addition to the standard of care laboratory and imaging procedures that are done around the time of organ transplantation, the following research samples will be collected:

  • Pre-transplant - RAL concentrations
  • In addition, the following information will be recorded from the subject's medical record: full HIV and infective history and test results including CD4 count, and percentage, HIV viral load, electrocardiography (to assess QTc interval), CMV-IgG/IgM, Hepatitis B, C, D screens +/- viral loads if not already determined.

Post-transplant inpatient hospitalization

  • RAL concentrations as well as HIV viral load and CD4/CD8 lymphocyte populations.
  • In addition, the following information will be recorded from the subject's medical record: test results including EKG (to assess QTc interval).

Post-transplant:

  • RAL concentrations will be collected at Months 1 and 3 only.
  • In addition to the routine post-transplant care, the following information will be collected from the subject's medical records at study months 1, 3, 6, 9, 12, 24 post transplant: CD4 count and %, HIV viral load (+/- genotype and integrase mutation analysis if viral rebound occurs), Vitamin D, Basic Metabolic Panel (to calculate ClCr), quantitative urinary creatinine and protein excretion. Patient side-effect card will be ascertained by directed questioning from the study coordinator at each visit.

Repeat DEXA scan will be done at the 24 months post-transplant visit. Quality of Life assessment and depression screening tools will be administered at the 6 and 24 month marks.

Study Type

Observational

Enrollment (Actual)

17

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • North Carolina
      • Durham, North Carolina, United States, 277138270
        • Duke University Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

13 years to 80 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

HIV positive patients, awaiting or listed for organ transplantation, currently taking Raltegravir

Description

Inclusion Criteria:

  1. non-pregnant adult patient with CD4 count >200/μL
  2. no concurrent active AIDS-defining infections or malignancy
  3. at least 24 months of well controlled HIV viremia, defined as <50 copies for the majority of the time.
  4. otherwise suitable transplant candidates, actively listed
  5. currently taking Raltegravir for control of HIV infection

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
To examine raltegravir (RAL) in the management of HIV-infected persons listed for solid organ transplantation, with a focus on mortality and graft survival
Time Frame: 3+ years
3+ years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Assess Raltegravir viability as a long term HIV treatment drug for patients undergoing transplant
Time Frame: 3+ years
  1. Characterize the effect of raltegravir-based regimens on the pre and post-transplant endocrine and cardiovascular effects
  2. Evaluate drug-drug interactions between raltegravir and current transplant immunosuppressant regimens.
  3. Determine RAL pharmacokinetic (PK) profile in HIV-infected patients with end organ failure before and after organ transplantation.

a) Measure RAL PK in HIV-infected patients with end-stage renal failure (ESRF), who are receiving dialysis pre-transplant.

b) Assess raltegravir PK in patients with different severities of liver disease, including cirrhosis, when such patients are available.

d) Assess the ability of RAL-centered ART combinations to maintain HIV suppression and CD4 counts following solid-organ transplant.

3+ years
determine the viability of grafted organs in patients with HIV infections
Time Frame: 3+ years
  1. Track adverse events including those attributable to ART therapy, but also routine post-transplant events. Assess the safety and tolerability profile of RAL during the pre and post-transplant period.
  2. Determine graft survival and performance following transplantation in this population and compare to similar data in HIV-negative historical controls.
3+ years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Collaborators

Investigators

  • Principal Investigator: Cameron R Wolfe, MD, Duke University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2012

Primary Completion (Actual)

June 1, 2017

Study Completion (Actual)

June 1, 2017

Study Registration Dates

First Submitted

February 13, 2013

First Submitted That Met QC Criteria

February 13, 2013

First Posted (Estimate)

February 15, 2013

Study Record Updates

Last Update Posted (Actual)

August 16, 2017

Last Update Submitted That Met QC Criteria

August 14, 2017

Last Verified

July 1, 2017

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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