This trial is active, not recruiting.

Condition antibody mediated rejection
Treatment cyclophosphamide
Phase phase 2
Sponsor University of Manitoba
Start date June 2013
End date April 2018
Trial size 4 participants
Trial identifier NCT01630538, TMCT-01


The study hypothesis is that short-term low dose cyclophosphamide therapy will be effective in resolving inflammation in patients with late phase antibody-mediated rejection refractory to current standard of care treatment.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Intervention model single group assignment
Primary purpose treatment
Masking no masking
Cyclophosphamide 1.5 mg/kg orally daily for 180 days (26 weeks) adjusted for renal function.
cyclophosphamide Procytox
Cyclophosphamide 1.5 mg/kg orally daily for 180 days adjusted for renal function

Primary Outcomes

Microvascular inflammation
time frame: month 6

Secondary Outcomes

titre of donor specific antibody (DSA)
time frame: 6 and 12 months
antibody-mediated tissue injury
time frame: month 6
Urine Albumin/Creatinine ratios
time frame: month 6 and 12
Creatinine Clearance and estimated GFR
time frame: month 6 and 12
Graft Survival
time frame: month 6 and 12
Patient Survival
time frame: month 6 and 12

Eligibility Criteria

All participants at least 18 years old.

Inclusion Criteria: - Patients with a living or deceased donor kidney transplant - Failed current standard of care for late antibody-mediated rejection - Persistent de novo donor specific antibody and a concurrent biopsy with histologic evidence of acute antibody-mediated inflammation - Adults with reproductive potential must agree to use approved methods of birth control while in the study Exclusion Criteria: - Leukopenia (WBC) < 3.0 x 109/L - Creatinine Clearance less than or equal to 25 ml/min/1.73m2 - HCV or HBV positive - BKV or CMV viremia assessed by PCR - Any active infection - Use of other investigational drugs within 4 weeks of study - Pregnancy/breast feeding/unwilling or unable to take birth control - Active malignancy - de novo DSA occurring equal to or greater than15 years after kidney transplant - Screening biopsy with equal to or greater than cg2 on Banff criteria - Cumulative/lifetime dose of cyclophosphamide, including anticipated total study dose (calculated according to Creatinine Clearance and mg/kg/day) equal to or greater than 36 g. - Any condition that, in the opinion of the investigator, would pose risk to the subject's safe participation in the study

Additional Information

Official title Phase II Pilot Study of Cyclophosphamide Therapy for Refractory Antibody-Mediated Rejection in Kidney Transplantation
Principal investigator Peter W Nickerson, MD
Description There is no consensus on the optimal treatment of de novo donor specific antibody-mediated rejection. Optimizing baseline immunosuppression (calcineurin inhibitor (CNI), anti-proliferative agent, and anti-inflammatory) is considered foundational but is insufficient. Pulse steroids are routinely used. A number of immunosuppressive approaches have been tried in uncontrolled trials. The strongest evidence, at least for early antibody-mediated rejection (< 6 months from transplant), exists for plasmapheresis, with or without low dose IVIg, or high dose IVIg alone. However, as noted in a recent FDA workshop, "while the literature suggests that [these agents] have evidence of efficacy for the management of acute antibody-mediated rejection, and could be considered as standard of care, treatment regimes have not been standardized or optimized." Moreover the evidence supporting efficacy of this approach in late, as opposed to early antibody-mediated rejection is distinctly lacking.
Trial information was received from ClinicalTrials.gov and was last updated in April 2017.
Information provided to ClinicalTrials.gov by University of Manitoba.