Korean J Transplant.  2020 Dec;34(Supple 1):S74. 10.4285/ATW2020.OP-1265.

Outcomes of renal transplantation in children with cystinosis

Affiliations
  • 1Department of Pediatric Nephrology, Baskent University Hospital, Ankara, Turkey
  • 2Department of General Surgery, Baskent University Hospital, Ankara, Turkey

Abstract

Background
Cystinosis is a rare lysosomal storage disease due to mutations in the CTNS gene. Although systemic disease manifestations continue, renal disease recurrence is not expected after transplant. We evaluate outcomes of renal transplant in children with cystinosis.
Methods
We retrospectively evaluated the data files from 165 pediatric renal transplant patients. Patients with cystinosis and patients with other etiologies of chronic renal failure were divided into two groups. Demographics of the patients, graft functions, infections, acute rejection episodes, and graft loss were recorded.
Results
One hundred sixty-five children (92 males and 73 females) with kidney transplant were enrolled to the study, eight of them had cystinosis. Although patients with cystinosis were youngest at the time of diagnosis when compared other patients (0.69±0.42 years vs. 7.76±5.20 years; P=0.00), mean ages at the time of the transplantation were similar (12.28±4.57 years vs. 12.95±4.75 years; P=0.69). Mean follow-up time after transplantation was 6.36±4.45 years. Acute rejection episode rate was two times higher in patients with other etiologies (12.55% vs. 24.87%). Glomerular filtration rate values at 3 years (73.90±43.62 mL/ min vs. 76.61±30.08 mL/min; P=0.84) and 5 years of follow-up (62.37±41.42 mL/min vs. 62.82±32.82 mL/min, p=0.98) of two groups was similar. Eight patients (4.84%) were lost their graft during 5 years of follow-up. One of these patients was in cystinosis group.
Conclusions
Renal transplant has similar outcomes, with lowest acute rejection episode rate in children with cystinosis when compared with other patients with different etiology of chronic renal failure.

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