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Envarsus Neurotoxicity Burden in Liver Transplant Patients

The Effect of Conversion to Once-Daily Envarsus® on the Neurologic Toxicity Burden in Liver Transplant Recipients

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03823768
Enrollment
30
Registered
2019-01-30
Start date
2020-01-31
Completion date
2024-01-30
Last updated
2025-03-30

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

Conditions

Liver Transplant; Complications, Neurotoxicity

Brief summary

This study will compare neurologic side effects associated with two immunosuppressant medications used in liver transplant patients. The standard therapy of twice daily immediate release Tacrolimus will be compared to Envarsus once daily. We hypothesize that Envarsus will show a lower rate of neurologic side effects than immediate release tacrolimus.

Interventions

Subjects in this group will take Envarsus daily for 6 months of treatment (goal 24 hour trough: 3-10 ng/mL) +/- adjunctive agent and prednisone.

Subjects in this group will take Tacrolimus immediate release for 6 months of treatment (goal 12 hour trough: 3-10 ng/mL) +/- adjunctive agent and prednisone.

Sponsors

Veloxis Pharmaceuticals
CollaboratorINDUSTRY
Medical University of South Carolina
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Male or female adult (≥18 years old) with a history of liver or liver/kidney transplant within the first 6 months of transplant. 2. Patients must be capable of understanding the purposes and risks of the study and have the ability to give written informed consent and be willing to participate and comply with the study.

Exclusion criteria

1. Patients will be excluded if they are pregnant or nursing females or males with a pregnant female partner 2. HIV positive (HIV ab +) 3. Unable to tolerate oral medications 4. Use of another investigational product within thirty days prior to receiving study medication 5. Moderate acute cellular rejection (RAI ≥ 5) within the past month 6. A condition that is known to cause tremor such as essential tremor, Parkinson disease, or enhanced physiologic tremor. 7. Patients taking medications known to induce tremors or dopamine blocking agents 8. A condition or disorder that, in the opinion of the investigator, may adversely affect the outcome of the study or the safety of the subject

Design outcomes

Primary

MeasureTime frameDescription
Change in Neurotoxicity Burden6 monthsEstimate the change from baseline to six months in neurotoxicity burden measured by a composite Patient Global Impression of Improvement score (PGI-I, with a range of 4-28) The PGI-I is a global index that may be used to rate the response of a condition to a therapy (transition scale). Scale min=4, scale max=28. The scale is made up of four questions, each question has a total of 7 responses, the total score is the sum of each questions choice (1-7). Higher values represent a worsening condition. A score of 16 would indicate no overall change. A score of 15 or lower indicates improvement in the condition and a score of 17 or higher indicates a worsening of the condition. A score of 28 would indicate very much worse, while a score of 4 would indicate very much better. A relative change of 2 points would be considered a significant change from baseline.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm 1: Control
Tacrolimus immediate release twice daily for 6 months Tacrolimus Immediate release: Subjects in this group will take Tacrolimus immediate release for 6 months of treatment (goal 12 hour trough: 3-10 ng/mL) +/- adjunctive agent and prednisone.
15
Arm 2: Intervention
Envarsus daily for 6 months. Envarsus: Subjects in this group will take Envarsus daily for 6 months of treatment (goal 24 hour trough: 3-10 ng/mL) +/- adjunctive agent and prednisone.
15
Total30

Baseline characteristics

CharacteristicArm 2: InterventionTotalArm 1: Control
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
1 Participants2 Participants1 Participants
Age, Categorical
Between 18 and 65 years
14 Participants28 Participants14 Participants
Age, Continuous52 years
STANDARD_DEVIATION 9
52 years
STANDARD_DEVIATION 11
51 years
STANDARD_DEVIATION 13
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants3 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
13 Participants27 Participants14 Participants
Region of Enrollment
United States
15 participants30 participants15 participants
Sex: Female, Male
Female
13 Participants22 Participants9 Participants
Sex: Female, Male
Male
2 Participants8 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 150 / 15
other
Total, other adverse events
0 / 150 / 15
serious
Total, serious adverse events
0 / 151 / 15

Outcome results

Primary

Change in Neurotoxicity Burden

Estimate the change from baseline to six months in neurotoxicity burden measured by a composite Patient Global Impression of Improvement score (PGI-I, with a range of 4-28) The PGI-I is a global index that may be used to rate the response of a condition to a therapy (transition scale). Scale min=4, scale max=28. The scale is made up of four questions, each question has a total of 7 responses, the total score is the sum of each questions choice (1-7). Higher values represent a worsening condition. A score of 16 would indicate no overall change. A score of 15 or lower indicates improvement in the condition and a score of 17 or higher indicates a worsening of the condition. A score of 28 would indicate very much worse, while a score of 4 would indicate very much better. A relative change of 2 points would be considered a significant change from baseline.

Time frame: 6 months

ArmMeasureValue (MEDIAN)
Arm 1: ControlChange in Neurotoxicity Burden-5 score on a scale
Arm 2: InterventionChange in Neurotoxicity Burden-4 score on a scale

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