Serum β2-Microglobulin Predicts Time to Recovery of Delayed Graft Function in Kidney Transplant Recipients
Background
Delayed graft function (DGF) after kidney transplantation can lead to negative patient and allograft outcomes. Prolonged DGF is linked to worse graft outcomes. The relationship between posttransplant serum β2-microglobulin (B2M) and DGF recovery is not well understood.
Methods
All kidney-only transplant recipients with DGF from the E-DGF trial were included. DGF duration was defined as the time between transplant and the last dialysis session. The association of standardized serum creatinine (Scr) and B2M on postoperative Days 1-7 with DGF recovery was analyzed.
Results
97 recipients with DGF were included, with a mean DGF duration of 11.0 ± 11.2 days. Higher Scr was not associated with DGF duration, but higher standardized B2M was linked to a prolonged DGF duration. This association remained even after adjusting for baseline characteristics.
Conclusion
B2M is more strongly associated with DGF recovery than Scr. Posttransplant B2M may be an important biomarker to monitor during DGF.
Trial Registration
ClinicalTrials.gov identifier: NCT03864926
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