Tacrolimus in Allogeneic Hematopoietic Stem Cell Transplant (HCT)

NCT ID: NCT04645667

Last Updated: 2023-10-17

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

COMPLETED

Total Enrollment

38 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-02-01

Study Completion Date

2023-10-15

Brief Summary

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The purpose of this research study is to evaluate tacrolimus plasma concentrations in patients who will undergo an allogeneic hematopoietic stem cell transplant (HCT). The study aims to identify associations between plasma concentrations, baseline demographic characteristics, clinical lab parameters, and genetic factors. These associations will help clinicians determine the best starting dose for tacrolimus in order to minimize risks of aGVHD and tacrolimus-induced toxicities.

Detailed Description

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This study aims to evaluate tacrolimus concentration-time data to characterize tacrolimus inter-individual pharmacokinetic (PK) variability in adult patients who will receive HCT, and to associate concentration-time data, exposure and clearance data with important clinical endpoints such as acute graft-versus-host disease (aGVHD) and tacrolimus-induced toxicities. This study proposes to enroll 50 patients at University of North Carolina Medical Center (UNCMC) who will undergo allogeneic HCT, who will receive tacrolimus starting the third day prior to allogeneic HCT (Day -3) for aGVHD prophylaxis. This will be an observational study, and its goal will be to ideally collect baseline clinical and demographic data, concentration-time data for tacrolimus on Day -3 (3 days before the transplant), Day -2 (2 days before the transplant), Day -1 (one day before the transplant), and Day 0 (the day of the allogeneic HCT) for a full pharmacokinetic profile. A medical chart review will be conducted to extract data on tacrolimus-induced toxicities (i.e., acute kidney injury \[AKI\], hypertension, metabolic panel changes, etc.) and aGVHD incidence rate up to Day +100 (100 days post-allogeneic HCT). Blood will also be collected for genotyping and will also be collected after the transplant to obtain information for surrogate PD biomarkers of tacrolimus efficacy, such as interleukin 2 (IL2) production and quantifiable nuclear localization of the dephosphorylated nuclear-activated T cells (NFAT). These data will aid in the development of a population-based PK/pharmacodynamic (PD) model that will serve as the foundation for a proposed precision dosing approach to optimize tacrolimus dosing. One of the secondary endpoints will be time to aGVHD, which will be defined as the duration from D0 until the first occurrence of aGVHD, censored at 100 days post-allogeneic HCT (Day +100). In the case of haplo-transplant patients, they will receive tacrolimus starting on Day +5 (as opposed to on Day -3 in non-haplo-transplant recipients). Per standard of care, haplo-transplant patients are initiated on Day +5 (5 days after the transplant). Therefore, in these patients, serial blood draws will be collected on a similar timeline as the non-haplo-transplant patients, but in this case Day +5, Day +6 (6 days after the transplant), Day +7 (7 days after the transplant), and Day +8 (8 days after the transplant; Day +8 is when they reach steady-state). For the PD biomarker studies in haplo-transplant patients, blood draws will occur on Day +9 (9 days after the transplant), Day +16 (16 days after the transplant), and Day +23 (23 days after the transplant) (Figure 2). All other procedures will remain the same.

Conditions

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Acute GVHD

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Adult patients of allogeneic hematopoietic HCT

Patients who receive their first allogeneic HCT transplant and who receive tacrolimus for aGVHD prophylaxis per standard of care.

Tacrolimus

Intervention Type DRUG

Patients will be enrolled into this group if they receive tacrolimus per standard of care. This is an observational study and no interventions will be made.

Interventions

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Tacrolimus

Patients will be enrolled into this group if they receive tacrolimus per standard of care. This is an observational study and no interventions will be made.

Intervention Type DRUG

Other Intervention Names

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Prograf

Eligibility Criteria

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Inclusion Criteria

1. ≥18 years of age
2. Patients who will undergo their first HCT
3. Patients who will start tacrolimus for aGVHD prophylaxis
4. Patients who have provided written informed consent and Health Insurance Portability and Accountability Act (HIPAA) authorization for release of personal health information

Exclusion Criteria

1. Patients who have cognitive impairments that could affect informed decision-making
2. Patients who are incarcerated
3. Patients started on a strong CYP3A4 inhibitor (i.e. posaconazole)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of North Carolina, Chapel Hill

OTHER

Sponsor Role collaborator

UNC Lineberger Comprehensive Cancer Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Daniel J Crona, PharmD, PhD

Role: PRINCIPAL_INVESTIGATOR

UNC Lineberger Comprehensive Cancer Center

Locations

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University of North Carolina at Chapel Hill

Chapel Hill, North Carolina, United States

Site Status

Countries

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United States

References

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Dunlap TC, Zhu J, Weiner DL, Kemper RM, DeVane SC, Ma F, Nguyen V, Coghill JM, Dang V, Grgic T, Jamieson K, Miller J, Myers J, Patel T, Riches M, Serody JS, Trepte M, Vincent BG, Wood WA, Ptachcinski JR, Shaw JR, Weimer E, Armistead PM, Crona DJ. A Tacrolimus Population Pharmacokinetic Model for Adult Allogeneic Hematopoietic Cell Transplant Recipients Provides Clinical Opportunities for Precision Dosing. Clin Pharmacokinet. 2025 Aug 12. doi: 10.1007/s40262-025-01529-w. Online ahead of print.

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Other Identifiers

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IRB 19-3328

Identifier Type: OTHER

Identifier Source: secondary_id

LCCC2034

Identifier Type: -

Identifier Source: org_study_id

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