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CNS Study of Patients Switching From Tacrolimus to Envarsus

A Pilot Study of Stable Kidney Transplant Recipients Taking Tacrolimus With CNS Symptoms Switched to Envarsus

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03270462
Enrollment
20
Registered
2017-09-01
Start date
2017-12-01
Completion date
2020-06-02
Last updated
2022-06-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Renal Transplant Patients

Brief summary

This is a pilot study documenting the neurotoxic side effects including tremors in patients with a stable graft who are receiving Tacrolimus following kidney transplantation. A standardized questionnaire will be used to document these symptoms.

Detailed description

Immunosuppressive therapies have burdensome side effects which may lead to sub-therapeutic dosing and non-compliance. This study provides renal transplant patients the opportunity for an alternative treatment using tacrolimus, with possible less Central Nervous Symptom (CNS) side effects. CNS side effects are one of the main reasons that patients complain about after having a kidney transplant while on tacrolimus (Prograf). The side effects can be debilitating and can affect the patient's overall well-being. In severe cases it may lead to non-compliance. The advantage of the study of using Envarsus is the ability to avoid these debilitating CNS side effects and afford better compliance with the patients taking the medicine.

Interventions

Pilot study documenting the neurotoxic side effects including tremors in patients with stable graft who are receiving Tacrolimus (Envarsus XR) following kidney transplantation. Standardized questionnaire will be used to document these symptoms.

Sponsors

University of Colorado, Denver
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Kidney transplant recipients with stable graft function. * More than 1 months post-transplant. * 18+ years of age with some CNS problems secondary to Prograf (tacrolimus).

Exclusion criteria

* Multi-organ patients (kidney/pancreas, kidney/liver). * Evidence of graft rejection or treatment of acute rejection within 14 days prior to baseline visit. * Inability to self-administer the QOL questionnaires.

Design outcomes

Primary

MeasureTime frameDescription
Change in Quality of LifeBaseline, 1 Month, 6 MonthsThe Investigators will evaluate the quality of life between baseline and 6 months related to sleep disturbance and upper extremity fine motor skills/ADL (activities of daily living), with the goal to be an improvement in their quality of life. This was assessed via a study-specific clinical assessment that evaluated patient reports of hand tremor and related complaints, and scored in a range of 0 to 3, with higher scores indicating worse symptoms of hand tremor, and a lower QOL.

Secondary

MeasureTime frameDescription
Therapeutic Tacrolimus Drug LevelsBaseline, 1 Month, 6 MonthsThe Investigators will evaluate Tacrolimus drug levels and will document any adverse events associated with this measure.
Kidney Function: Serum Creatinine LevelsBaseline, 1 Month, 6 MonthsThe Investigators will evaluate serum creatinine levels and will document any adverse events associated with this measure.

Countries

United States

Participant flow

Participants by arm

ArmCount
Envarsus XR
A form of the anti-rejection drug, tacrolimus, for people who have had a kidney transplant. Envarsus XR: Pilot study documenting the neurotoxic side effects including tremors in patients with stable graft who are receiving Tacrolimus (Envarsus XR) following kidney transplantation. Standardized questionnaire will be used to document these symptoms.
20
Total20

Baseline characteristics

CharacteristicEnvarsus XR
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
5 Participants
Age, Categorical
Between 18 and 65 years
15 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
19 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
15 Participants
Region of Enrollment
United States
20 participants
Sex: Female, Male
Female
10 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 20
other
Total, other adverse events
0 / 20
serious
Total, serious adverse events
0 / 20

Outcome results

Primary

Change in Quality of Life

The Investigators will evaluate the quality of life between baseline and 6 months related to sleep disturbance and upper extremity fine motor skills/ADL (activities of daily living), with the goal to be an improvement in their quality of life. This was assessed via a study-specific clinical assessment that evaluated patient reports of hand tremor and related complaints, and scored in a range of 0 to 3, with higher scores indicating worse symptoms of hand tremor, and a lower QOL.

Time frame: Baseline, 1 Month, 6 Months

ArmMeasureGroupValue (MEAN)
Envarsus XRChange in Quality of LifeBaseline2.7 score on a scale
Envarsus XRChange in Quality of LifeMonth 11.35 score on a scale
Envarsus XRChange in Quality of LifeMonth 60.2 score on a scale
Secondary

Kidney Function: Serum Creatinine Levels

The Investigators will evaluate serum creatinine levels and will document any adverse events associated with this measure.

Time frame: Baseline, 1 Month, 6 Months

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Envarsus XRKidney Function: Serum Creatinine LevelsMonth 11.14 mg/dlStandard Deviation 0.34
Envarsus XRKidney Function: Serum Creatinine LevelsMonth 61.11 mg/dlStandard Deviation 0.35
Envarsus XRKidney Function: Serum Creatinine LevelsBaseline1.19 mg/dlStandard Deviation 0.31
Secondary

Therapeutic Tacrolimus Drug Levels

The Investigators will evaluate Tacrolimus drug levels and will document any adverse events associated with this measure.

Time frame: Baseline, 1 Month, 6 Months

ArmMeasureGroupValue (MEAN)Dispersion
Envarsus XRTherapeutic Tacrolimus Drug LevelsBaseline8.66 ng/mlStandard Deviation 2.71
Envarsus XRTherapeutic Tacrolimus Drug LevelsMonth 18.58 ng/mlStandard Deviation 1.75
Envarsus XRTherapeutic Tacrolimus Drug LevelsMonth 68.48 ng/mlStandard Deviation 2.43

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026