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2018 ; 4
(7
): e362
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Kidney Dysfunction After Vascularized Composite Allotransplantation
#MMPMID30046652
Krezdorn N
; Tasigiorgos S
; Wo L
; Lopdrup R
; Turk M
; Kiwanuka H
; Ahmed S
; Petruzzo P
; Bueno E
; Pomahac B
; Riella LV
Transplant Direct
2018[Jul]; 4
(7
): e362
PMID30046652
show ga
BACKGROUND: Kidney dysfunction is a major complication after nonrenal solid organ
transplants. Transplantation of vascularized composite allografts (VCA) has
yielded successful midterm outcomes despite high rates of acute rejection and
greater requirements of immunosuppression. Whether this translates in higher
risks of kidney complications is unknown. METHODS: Ninety-nine recipients of
facial or extremity transplants from the Brigham and Women's Hospital (BWH) and
the International Registry on Hand and Composite Tissue Transplantation (IR) were
reviewed. We assessed immunosuppression, markers of renal function over time, as
well as pretransplant and posttransplant renal risk factors. RESULTS: Data were
obtained from 10 patients from BWH (age at transplant, 42.5 ± 13.8 years) and 89
patients (37.8 ± 11.5 years) from IR. A significant rise in creatinine levels
(BWH, P = 0.0195; IR, P < 0.0001) and drop in estimated glomerular filtration
rate (GFR) within the first year posttransplant was observed. The BWH and IR
patients lost a mean of 22 mL/min GFR and 60 mL/min estimated GFR in the first
year, respectively. This decrease occurred mostly in the first 6 months
posttransplant (BWH). Pretransplant creatinine levels were not restored in either
cohort. A mixed linear model identified multiple variables correlating with renal
dysfunction, particularly tacrolimus trough levels. CONCLUSIONS: Kidney
dysfunction represents a major complication posttransplantation in VCA recipients
early on. Strategies to mitigate this complication, such as reducing calcineurin
inhibitor trough levels or using alternative immunosuppressive agents, may
improve long-term patient outcomes. Standardizing laboratory and data collection
of kidney parameters and risk factors in VCA patients will be critical for better
understanding of this complication.