TruGraf Utilization in High IPV Levels

NCT ID: NCT04280276

Last Updated: 2024-12-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

13 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-03-02

Study Completion Date

2022-03-01

Brief Summary

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Intra-patient variability (IPV) in tacrolimus is associated with premature graft loss. The rate of acute rejection episodes is higher in these patients, and acute rejection impacts negatively on graft survival. The prevalence of patients with high IPV is higher in African American patients (1-5). At the kidney transplant program of the University of Maryland, our investigators follow over 2.800 patients, with approximately 50% of the patients being of African American heritage, thus an ideal setting for the study.

Detailed Description

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Study Population: Kidney transplant recipients with stable renal function with regular follow-up at the University of Maryland post-transplant clinic with at least 3 levels deemed as appropriately 12-hour trough levels within 3-36 months post-transplant.

Group 1 - patients with high IPV (designated as ≥ 30%). Group 2 - patients with normal IPV (\< 30%). Will assess risk of subclinical acute rejection in patients with high IPV compared to normal IPV. All tacrolimus 12 h trough levels in patients with stable allograft function at least 3 months post-transplant.

Calculation of IPV: CV (%) = (SD/mean Tac trough concentration) x 100 (if stable total daily dose). To take into account dose changes, obtained levels will be corrected for the corresponding daily dose of tacrolimus to help correctly calculate IPV (CV C0/D-IPV) (6-7).

Patients will be tested with TruGraf one time during the study.

Conditions

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Kidney Transplant; Complications

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Group 1 - Patients with high IPV (designated as ≥ 30%).

Patients with high IPV (designated as ≥ 30%).

Group Type ACTIVE_COMPARATOR

TruGraf test

Intervention Type DIAGNOSTIC_TEST

To obtain longitudinal TruGraf testing in patients with stable creatinine, high and normal IPV in tacrolimus levels, between 3 and 18 months post-transplant at the University of Maryland post-transplant clinic.

Group 2 - patients with normal IPV (< 30%).

Patients with normal IPV (\< 30%). Will assess risk of subclinical acute rejection in patients with high IPV compared to normal IPV. All tacrolimus 12 h trough levels in patients with stable allograft function at least 3 months post-transplant.

Group Type ACTIVE_COMPARATOR

TruGraf test

Intervention Type DIAGNOSTIC_TEST

To obtain longitudinal TruGraf testing in patients with stable creatinine, high and normal IPV in tacrolimus levels, between 3 and 18 months post-transplant at the University of Maryland post-transplant clinic.

Interventions

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TruGraf test

To obtain longitudinal TruGraf testing in patients with stable creatinine, high and normal IPV in tacrolimus levels, between 3 and 18 months post-transplant at the University of Maryland post-transplant clinic.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

1. Are males or females of at least 18 years of age.
2. Have the ability to understand the requirements of the study and are able to provide written informed consent.
3. Recipient of a primary or subsequent deceased-donor or living donor kidney transplantation.
4. Stable serum creatinine (current serum creatinine \<2.3 mg/dl, \<20% increase compared to the average of the previous 3 serum creatinine levels)
5. Kidney transplant patients who \>90 days (+/- 2 weeks) post-transplant will be included in this study
6. Patients with at least 3 tacrolimus trough levels( deemed as appropriately 12-hour trough levels) within 3-36 months post-transplant

Exclusion Criteria

1. Inability or unwillingness to provide informed consent.
2. Need for combined organ transplantation with an extra-renal organ and/or islet cell transplant.
3. Recipients of previous non-renal solid organ and/or islet cell transplantation.
4. Infection with HIV.
5. Infection with BK nephropathy.
6. Patients that have nephrotic range proteinuria (urine protein \>3 gm/day).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Transplant Genomics, Inc.

INDUSTRY

Sponsor Role collaborator

University of Maryland, Baltimore

OTHER

Sponsor Role lead

Responsible Party

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Roberto Kalil

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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University of Maryland Medical Center

Baltimore, Maryland, United States

Site Status

Countries

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United States

Other Identifiers

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HP-00089343

Identifier Type: -

Identifier Source: org_study_id