Intravenous Immunoglobulins for Prevention of BKV Infection in Kidney Transplant Recipients According to BKV Genotype-specific Neutralizing Antibody Titers at the Day of Transplantation.

NCT04222023 | Completed Phase 4

• 1 other identifier: 6997
• Study Type: interventional
• Target: 359
• Locations: 1 country
• Sites: 1

Brief Summary

BK virus-associated nephropathy (BKVAN), a consequence of the strong immunosuppressive therapy given after kidney transplantation (KT), represents a growing medical problem in the KT setting. BKV replication occurs in 30-50% of recipients with progression to BKVAN in up to 10% of patients which ultimately leads to graft dysfunction and loss. Furthermore, early BKV replication after transplantation increases the risk of late acute rejection. At present, there are no BKV-specific antiviral therapies available. The current management of BKVAN relies on preemptive adaptation of immunosuppression according to viral load monitoring. However, due to its delayed nature, this empirical strategy is not always successful, and can increase the risk of donor specific antibodies, graft rejection and death. In a prospective longitudinal study, the investigators have demonstrated that the amount and kinetics of BKV genotype-specific neutralizing antibody (NAb) titers influence BKV disease severity after KT; and defined a cutoff NAb titer value of 4 log10 that allows stratification of recipients into lower and higher BKV disease risk groups prior to KT. Furthermore, our data on donor/recipient pairs provide support for the view reported by recent studies that early BKV replication in kidney transplant recipients is of donor origin. These data support the potential benefit of administering NAbs as a preventive strategy against BKV infection. The investigators and others have demonstrated the presence of high titers of BKV NAbs in commercial intravenous immunoglobulins (IVIG). The investigators further evaluated the titer of BKV NAbs in plasma samples of transplant recipients after administration of IVIG. The investigators demonstrated that all patients show an increase of NAb titers in plasma after IVIG administration. The aim of the investigators study is to investigate the efficacy of IVIG for prevention of BKV viremia after KT according to pre-transplant BKV genotype-specific NAb titers against the donor's BKV strain. The study is a multicentric prospective randomized open trial evaluating the impact of administration of IVIG for prevention of BKV viremia compared to no specific treatment in kidney transplant recipients harboring neutralizing antibody titers (NAbs) ≤ 4log10 against the BKV donor's genotype. Recipients harboring BKV NAb titer ≤ 4log10 against the BKV genotype of their matched donor and negative or non-detectable BKV load in blood at day of transplantation will be randomized to receive (experimental group) or not (control group) IVIG treatment. In the experimental group, patients will receive a single dose of IVIG at day 10+/- 4 days, day 41 +/- 7 days and day 62 +/- 7 days. The dose of IVIG is defined according the donor BKV genotype: genotype I: 0.4 g/Kg/day; genotype II and IV: 1g/kg/day. The incidence of BKV viremia (\> 4 log10 copies/mL) 6 months after transplantation will be evaluated and compared between the two groups.

Conditions

Kidney Transplantation

Outcome Measures

Primary Outcomes (6)

• The incidence of BKV viremia

  BKV viremia will be measured at the day of transplantation at day 10

• The incidence of BKV viremia

  BKV viremia will be measured at the day of transplantation at day 41

• The incidence of BKV viremia

  BKV viremia will be measured at the day of transplantation at day 62

• The incidence of BKV viremia

  KV viremia will be measured at the day of transplantation at months 3

• The incidence of BKV viremia

  BKV viremia will be measured at the day of transplantation at months 6

• The incidence of BKV viremia

  BKV viremia will be measured at the day of transplantation at months 12

Study Arms (2)

IVIG group

EXPERIMENTAL

Administration of a single dose of IVIG at day 10+/- 4 days, day 41 +/- 7 days and day 62 +/- 7 days. The dose of IVIG is defined according the donor BKV genotype: genotype I: 0.4 g/Kg/day; genotype II and IV: 1g/kg/day.

Drug: Intravenous immunoglobulins (IVIG)

Control group

NO INTERVENTION

Interventions

Intravenous immunoglobulins (IVIG) DRUG

Experimental group: administration of a single dose of IVIG at: * Day 10+/- 4 days * Day 41 +/- 7 days * Day 62 +/- 7 days The dose of IVIG is defined according the donor BKV genotype: genotype I: 0.4 g/Kg/day; genotype II and IV: 1g/kg/day.

IVIG group

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Adult patients (\> 18 years)
• Kidney transplant recipients, including multiple organ transplant patients
• Patients able to understand the purpose and the risks of the study, fully informed and having written informed consent
• Negative pregnancy test
• Affiliated to a medical insurance scheme

You may not qualify if:

• BKV nephropathy during a previous transplantation in the past 5 years
• HLA and ABO-incompatible kidney transplant recipients undergoing desensitization with rituximab and/or plasmapheresis before transplantation or susceptible to receive such therapy after transplantation
• Patients with high risk of post- transplant Focal Segmental glomerulosclerosis recurrence
• Patient with hyperprolinemia
• Allergy or known intolerance to IVIG
• Pregnant or breast feeding women
• Adults under guardianship or limited guardianship

Sponsors & Collaborators

• University Hospital, Strasbourg, France: lead

Study Sites (1)

Les Hôpitaux Universitaires de Strasbourg

Strasbourg, 67000, France

Location

Related Publications (1)

• Helle F, Aubry A, Morel V, Descamps V, Demey B, Brochot E. Neutralizing Antibodies Targeting BK Polyomavirus: Clinical Importance and Therapeutic Potential for Kidney Transplant Recipients. J Am Soc Nephrol. 2024 Oct 1;35(10):1425-1433. doi: 10.1681/ASN.0000000000000457. Epub 2024 Jul 9.

  PMID: 39352862 DERIVED

MeSH Terms

Interventions

Immunoglobulins, Intravenous

Intervention Hierarchy (Ancestors)

Immunoglobulin G; Immunoglobulin Isotypes; Antibodies; Immunoglobulins; Immunoproteins; Blood Proteins; Proteins; Amino Acids, Peptides, and Proteins; Serum Globulins; Globulins

Study Design

• Study Type: interventional
• Phase: phase 4
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: December 19, 2019
• First Posted: January 9, 2020
• Study Start: August 21, 2022
• Primary Completion: August 1, 2025
• Study Completion: August 1, 2025
• Last Updated: August 6, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

FR (1)