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Search for Transcriptional Biomarkers in a Conversion Protocol From Calcineurin Inhibitors to Mycophenolate Mofetil

NCT01321112 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2012-05-10

No results posted yet for this study

Summary

As is well known, immunosuppressive treatment (IS) after liver transplantation has several and frequents adverse effects that limit the survival of the graft and recipients. Because of that, it is desirable that these recipients were able to receive a mild IS regime with a better safety profile. An attempt to get that aim has been evaluated in several trials in the past, and consist in to change the IS regime from an calcineurin inhibitors (CNI) based to another less intense and with less adverse effects based on mycophenolate mofetil (MMF), which is known to have a better safety profile. The success rate of this strategy(i.e. complete conversion in absence of rejection) has a wide range from 100% to 50% approximately. However it is accepted that this strategy is associated with the improvement of several adverse effects of CNIs such as renal failure and dyslipemia. This study's aim is to perform IS conversion from CNI to MMF monotherapy and look for transcriptional biomarkers employing a whole genome expression study performed with microarrays at baseline on liver tissue and/or PBMCs to try to find a differential gene expression able to correlate with a successful conversion and thus, to generate a set of transcriptional biomarkers potentially able to predict the result of the IS conversion on an independent cohort of liver recipients.

Conditions

  • Gene Expression
  • Immunosuppression Conversion
  • Liver Transplantation

Interventions

DRUG

conversion from CNI to MMF

After screening procedure mycophenolate mofetil will be started (week -4) at a dose of 500 mg twice a day for two weeks and then (week -2) increased to 1000 mg twice a day and CNI will be reduced at the 50% of the initial dose. After two weeks (week 0) CNI will be completely discontinued (complete IS conversion). The investigators will follow up patients every 4 weeks up to 48 weeks after the complete IS conversion.

Sponsors & Collaborators

  • Pontificia Universidad Catolica de Chile

    lead OTHER

Principal Investigators

  • Carlos E Benitez, MD · Gastroenterology Department. Pontificia Universidad Católica de Chile

Study Design

Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-02-28
Primary Completion
2014-03-31
Completion
2014-03-31

Countries

  • Chile

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01321112 on ClinicalTrials.gov