NCT00670774

Dosing Regimen of Eculizumab Added to Conventional Treatment in Positive Cross Match Living Donor Kidney Transplant

A Single Center, Open-label Study to Determine the Safety and Efficacy of a Dosing Regimen of Eculizumab Added to Conventional Treatment in the Prevention of Antibody-mediated Rejection (AMR) in Positive Crossmatch Living Donor Kidney Transplantation

• Status: Completed
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 31 (actual)
• Sponsor: Mark Stegall · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

A strongly positive crossmatch has long been considered an absolute contraindication to kidney transplantation and most patients with anti-human leukocyte antigen (HLA) antibody never were able to receive a kidney transplant. Over the past decade, significant progress has been made in overcoming early antibody-mediated renal allograft injury. Our group has performed more than 200 such transplants providing the possibility of transplant to previously untransplantable patients. Despite our best efforts, transplantation in these patients is still complicated by a high rate of acute humoral rejection (AHR). Patients included in this study will be those who have demonstrable anti-HLA antibody specific for their living donor. It is our hypothesis that blockade of terminal complement activation at the time of transplant in combination with our current protocols will reduce the incidence of AHR in patients with anti-donor HLA antibody.

Detailed description

The eculizumab dosing regimen was modified from that used in the treatment of paroxysmal nocturnal hemoglobinuria and consisted of 1200 mg immediately prior to transplantation, 600 mg on postoperative day 1, and 600 mg weekly thereafter for 4 weeks. At week 4, assessment of DSA levels was performed. Eculizumab was discontinued in patients whose DSA had significantly decreased (B flow crossmatch channel shift\<200). In patients with persistently high DSA and thus believed to have continued high risk for AMR, eculizumab treatment continued (1200 mg week 5, and then every 2 weeks). Another DSA assessment was performed at week 9 and eculizumab was discontinued if the B flow crossmatch channel shift was \<200. The eculizumab group were compared to a historical control group consisting of consecutive transplants between 1/1/2005 and 1/10/2017 who met the inclusion criteria. The historical control group had been treated with a similar plasma exchange based protocol without eculizumab.

Conditions

• Kidney Transplant

Interventions

Type	Name	Description
DRUG	Eculizumab	* Patients will be given 1200 mg of eculizumab intravenously over 30 minutes, 1 hour prior to surgery. * Patients will be given 900 mg of eculizumab on Day 1 post-transplant. * Patients will then be given 900 mg of eculizumab weekly through 4 weeks post-transplant * At week 4, patients will be assessed for B cell flow cytometry cross match (FCXM). Patients with B cell FCXM less than 200 will stop eculizumab treatment. Patients with B cell FCXM greater than or equal to 200 will continue eculizumab treatment every 14 days from week 5 through week 9. The dose will be increased to 1200 mg and dosing will now be every 2 weeks instead of weekly. Similar "discontinuation assessments" will be performed at week 9, 26, 39 and 52. * In addition, eculizumab 600 mg will be administered immediately after each plasmapheresis (PP) and immediately after any fresh frozen plasma (FFP) that is given post-transplant during the treatment period

Timeline

• Start date: 2008-03-01
• Primary completion: 2017-05-01
• Completion: 2017-08-01
• First posted: 2008-05-02
• Last updated: 2018-06-26
• Results posted: 2018-06-26

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study