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AllograftsPhase 2NCT04046549

A Study to Evaluate the Safety and Efficacy of Dual Costimulation Blockade With VIB4920 and Belatacept for Prophylaxis of Allograft Rejection in Adults Receiving a Kidney Transplant

A Phase 2 study testing Belatacept, VIB4920 and Thymoglobulin in people with Allografts and Rejection; Transplant, Kidney, run by Amgen at 4 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to evaluate the efficacy, safety and tolerability of dual costimulation blockade with VIB4920 in combination of belatacept in adult male or female recipients of a renal allograft from a deceased, living unrelated or human leukocyte antigen (HLA) non-identical living related donor. Read more about this study

Who is it for?
Ages 18 to 70 years
What is being tested?
Belatacept, VIB4920 and Thymoglobulin
Could I receive a placebo?
No, everyone receives an active treatment
How many people
25 participants
Where
4 sitesUnited States
Study dates
30 Oct 2019to 22 Mar 2023
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Recipients of a first renal transplant from standard criteria deceased, living unrelated or HLA non-identical living related donor.
  • Recipients who are at low immunologic risk:
  • No donor specific antibodies (DSA), and
  • Negative cross-match testing.
  • Recipients with up to date vaccination as per local immunization schedules.
  • Male and female participants who agree to follow protocol defined contraceptive methods.

Who cannot join

  • Participants receiving an allograft from an ABO-incompatible donor.
  • Participants treated with systemic immunosuppressive drug therapy for more than a total of 2 weeks within 24 weeks prior to informed consent form signature.
  • Participants who have undergone lymphodepleting therapy.
  • Participants with medical history of confirmed venous thromboembolism, arterial thrombosis, coagulopathy or known platelet disorders.
  • Participants with risk factors for venous thromboembolism or arterial thrombosis, prothrombotic status.
  • Participants requiring treatment with antithrombotic drugs (clopidogrel, prasugrel, warfarin, others).
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  • Participants requiring long-term systemic anticoagulation after transplantation, which would interfere with obtaining biopsies.
  • Participants with any contraindication to kidney biopsy.
  • Cytomegalovirus (CMV)-seronegative recipients of a CMV-seropositive donor kidney, or unknown CMV serostatus.
  • Epstein-Barr virus (EBV)-seronegative or with unknown EBV serostatus.
  • Receipt of live (attenuated) vaccine within the 4 weeks before screening.
  • Participants with high potential of graft loss due to recurrence of underlying kidney disease.
  • Prior solid organ transplant or potential to require a concurrent organ or cell transplant.
  • Previous treatment with belatacept and cluster of differentiation 40 (CD40) or anti-CD40L agents.
  • Use of B cell depleting therapy, non-depleting B cell directed therapy e.g., belimumab or abatacept within 1 year prior to enrolment.
  • At screening blood tests any of the following:
  • Aspartate aminotransferase (AST) > 2.5 × upper limit of normal (ULN)
  • Alanine aminotransferase (ALT) > 2.5 × ULN
  • Alkaline phosphatase (ALP) > 2.5 × ULN
  • Total bilirubin (TBL) > 2 × ULN
  • Hemoglobin < 75 g/L
  • Neutrophils < 1.5 × 10^9/L
  • Platelets < 100 × 10^9/L
  • Participants with severe systemic infections, current or within the 2 weeks prior to transplant surgery.
  • Positive test for chronic hepatitis B infection at screening or within the last 12 months.
  • Positive test for hepatitis C virus antibody at screening or within the last 12 months.
  • Positive test for human immunodeficiency viruses antibody at screening or within the last 12 months.
  • History of or active tuberculosis (TB), or a positive QuantiFERON®-TB Gold test at screening, unless previously treated for latent tuberculosis.
  • History of cancer, except as follows:
  • In situ carcinoma of the cervix treated with apparent success with curative therapy > 12 months prior to screening; or
  • Cutaneous basal cell or squamous cell carcinoma treated with apparent success with curative therapy.
  • Lactating or pregnant females.

Trial locations and contacts

4 sites in 1 country.

United States4 sites
  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390

  • Duke University School of Medicine

    Durham, North Carolina, 27710

  • Keck Medical Center of USC

    Los Angeles, California, 90033

  • University of California, San Francisco

    San Francisco, California, 94143

Other trials in United States

About this study

Official title: A Phase 2a Single-arm, Prospective, Open-label Pilot Study to Evaluate the Safety and Efficacy of Dual Costimulation Blockade With VIB4920 and Belatacept for Prophylaxis of Allograft Rejection in Adults Receiving a Kidney Transplant

The purpose of this study is to evaluate the efficacy, safety and tolerability of dual costimulation blockade with VIB4920 in combination of belatacept in adult male or female recipients of a renal allograft from a deceased, living unrelated or human leukocyte antigen (HLA) non-identical living related donor.

Read the detailed description

Study with completed results acquired from Horizon in 2024.

Being tested
Belatacept, VIB4920, Thymoglobulin, Methylprednisolone
Keywords
Renal allograft dysfunction, Cell-mediated rejection, Antibody mediated rejection, Immunosuppression, Acute rejection, VIB4920, MEDI4920, Belatacept, Thymoglobulin, Methylprednisolone, Corticosteroids
Medical subject headings
Rejection, Psychology

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • BelataceptDrug

    Protocol versions 1 through 4: Belatacept 10 mg/kg by intravenous (IV) infusion on post-op Day 1, repeated on post-op Day 3 or 4 (timing is at investigator's discretion), and at the end of Weeks 2, 4, 8 and 12; then 5 mg/kg IV every 4 weeks from Week 16 to Week 48.

  • VIB4920Drug

    Protocol versions 1 and 2: VIB4920 1500 mg by IV infusion on post-op Days 1 and 14, and at the end of Weeks 4, 6, 8 and 10; then 1500 mg every 4 weeks from Week 12 to Week 48.

    Protocol versions 3 and 4: VIB4920 1500 mg by IV infusion on post-op Days 1, repeated on post-op Day 3 or 4 (timing is at investigator's discretion), Week 2, and at the end of Weeks 4, 6, 8, and 10; then 1500 mg every 4 weeks from Week 12 to Week 48.

  • ThymoglobulinDrug

    Protocol versions 1 and 2: Thymoglobulin 3.0 mg/kg by intravenous (IV) infusion prior to reperfusion of the allograft on the day of transplantation surgery (Day 0) (1 dose).

    Protocol versions 3 and 4: Thymoglobulin 1.5 mg/kg by intravenous infusion prior to reperfusion of the allograft on the day of transplantation surgery (Day 0), prior to VIB4920+belatacept infusion on post-op Day 1, on post-op Day 2, and prior to VIB4920+belatacept infusion on post-op Day 3 or 4.

  • MethylprednisoloneDrug

    Protocol versions 1 and 2: Methylprednisolone by IV infusion (500, 250, 125 and 60 mg on Days 0, 1, 2 and 3, respectively) followed by oral administration of prednisone 30 mg per day on Days 4, 5, and 6.

    Protocol versions 3 and 4: Methylprednisolone by IV infusion (500, 250, 125 and 60 mg on Days 0, 1, 2 and 3, respectively) followed by oral administration of prednisone 30 mg per day on Days 4, 5, 6 and 7. Participants may be tapered to at least 20 mg per day on Day 8, to at least 10 mg per day on Day 15, and to at least 5 mg per day on Day 22. Discontinuation of prednisone following the post-op Day 28 visit.

Study groups in NCT04046549
Study groupRoleWhat they receive
Belatacept+VIB4920ExperimentalParticipants will be admitted to the transplant center for the administration of VIB4920 and belatacept (with Thymoglobulin and corticosteroids) and will be discharged on Day 3/4 at the discretion of the investigator. Participants will return to the study center to receive study drugs (VIB4920 and /or belatacept) weekly for 2 visits, then every 2 weeks for 5 visits, and then monthly for 9 visits for safety monitoring.
Receives: Drug: Belatacept; Drug: VIB4920; Drug: Thymoglobulin; Drug: Methylprednisolone

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants With Treated Biopsy-proven Acute Rejection (tBPAR) of Grade 1A or Higher, Graft Loss or Death at Week 24

    Histological grading of acute allograft rejection from biopsy specimens was based on Banff criteria 2017. Grade IA: Moderate tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade IB: Severe tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade II. Arterial intimal fibrosis with mononuclear cell inflammation, formation of neointima.

    Measured: Week 24

Secondary outcomes (7)
  1. Percentage of Participants With Treated Biopsy-proven Acute Rejection (tBPAR) of Grade 1A or Higher, Graft Loss or Death at Weeks 12 and 48

    Histological grading of acute allograft rejection from biopsy specimens was based on Banff criteria 2017. Grade IA: Moderate tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade IB: Severe tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade II. Arterial intimal fibrosis with mononuclear cell inflammation, formation of neointima.

    Measured: Weeks 12 and 48

  2. Percentage of Participants With Treated Biopsy-proven Acute Rejection (tBPAR), Graft Loss, Death or Loss to Follow-up (LTFU)

    Histological grading of acute allograft rejection from biopsy specimens was based on Banff criteria 2017. Grade IA: Moderate tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade IB: Severe tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade II. Arterial intimal fibrosis with mononuclear cell inflammation, formation of neointima.

    Measured: Week 12, 24, 48

  3. Percentage of Participants With Antibody-Mediated Rejection

    The diagnosis of antibody-mediated rejection was based on Banff criteria 2017 - a set of standardized guidelines used by pathologists and clinicians to diagnose and classify rejection based on specific features observed in biopsy samples from the transplanted organ, such as the presence of certain types of immune cells, inflammation, and injury patterns.

    Measured: Week 12, 24, 48

  4. Percentage of Participants With Treated Biopsy-proven Acute Rejection (tBPAR)

    Histological grading of acute allograft rejection from biopsy specimens was based on Banff criteria 2017. Grade IA: Moderate tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade IB: Severe tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade II. Arterial intimal fibrosis with mononuclear cell inflammation, formation of neointima. tBPAR was defined as a BPAR which was treated with anti-rejection therapy.

    Measured: Week 12, 24, 48

  5. Percentage of Participants With Biopsy Proven Acute Rejection (BPAR)

    Histological grading of acute allograft rejection from biopsy specimens was based on Banff criteria 2017. Grade IA: Moderate tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade IB: Severe tubulitis and at least moderate total cortical inflammation and at least moderate scarred cortical inflammation and other known causes ruled out. Grade II. Arterial intimal fibrosis with mononuclear cell inflammation, formation of neointima.

    Measured: Week 12, 24, 48

  6. Percentage of Participants With Treated Acute Rejections

    Acute rejections, per clinical judgement of the investigator followed by confirmatory biopsy, were treated with bolus methylprednisolone (other corticosteroids were acceptable at an equivalent dose) according to local practice.

    Measured: Week 12, 24, 48

  7. Percentage of Participants With De Novo Donor-specific Antibodies (dnDSA)

    Serum samples were collected for de novo donor-specific antibodies (dnDSA) using solid phase (bead-based) assays.

    Measured: Week 12, 24, 48

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Aug 2019
  2. Study start30 Oct 2019
  3. Primary completion18 Jul 2022
  4. Study completion22 Mar 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
25 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04046549
Sponsor's protocol ID
VIB4920.P2.S1
Status last verified
Dec 2024
First submitted
2 Aug 2019
Last updated
27 Dec 2024
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Belatacept, VIB4920 and Thymoglobulin in people with Allografts and Rejection; Transplant, Kidney, run by Amgen at 4 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 32 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 10 Oct 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants With Treated Biopsy-proven Acute Rejection (tBPAR) of Grade 1A or Higher, Graft Loss or Death at Week 24 (time frame: Week 24). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Dec 2024.

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