MO921PROGNOSTIC OUTCOMES OF TRANSPLANTED KIDNEY USING SOLUBLE CD30 AND Β2- MICROGLOBULIN
Authors: Abo omar Ahmed , Saadi Gamal 
Published: May 2021

Abstract

Background and Aims
Transplantation is the first successful modality of renal replacement therapy (RRT) for irreversible chronic kidney disease (CKD; stage 5). Identifying additional factors associated with poor long-term prognosis after transplantation may provide clues regarding the pathophysiological mechanisms involved in allograft failure and identify high-risk patients who may benefit from additional monitoring or interventions. Successful kidney transplantation results in a substantial decrease in β2M levels, but a delayed decrease or increasing levels after transplantation may serve as a marker of acute rejection or inflammation. Several reports show that elevated sCD30 levels, pre and post transplantation are associated with a poor prognosis for long term kidney graft survival. These studies found higher CD30 levels in allograft recipients and a good predictor of impending acute rejection.
The aim of the work is to study the prognostic outcomes of transplanted kidney using CD30 and β2-Microglobulin

Method
prospective study was conducted in nephrology unit –internal medicine department at Tanta and Kasr El Ainy university ,over 1 year.20 patients subjected to primary Tx.participated in this study.Cd30 and β2M.at day -1,2weeks and 3 months,with clinical follow up after 1 year to detect graft survival

Results
At day -1,level of cd30 was higher in rejection group than the other patient group.2 weeks post transplantation ,level of cd30 was higher in rejection group than the other patient group and at 3 monthes post transplantation level of cd30 was higher in rejection group than the other patient group,and these differences are statistically highly significant.(p values :0.003 ,0.005 and 0.002 respectively)
Successful transplantation leads to significant decrease in serum cd30 at 2 weeks post tx.(P1 &lt;0.005) and at 3 monthes post tx. (P1&lt;0.001) although in rejection group, significant decrease in cd30 was at 2 weeks post tx.only(P1&lt;0.005) and at 3 monthes serum cd30 began to rise again with( P1 0.157). At day -1,level of β2microglobulin was higher in rejection group than the other patient groupwith statistically significant difference (p. 0.01).2 weeks post transplantation ,level of β2microglobulin was higher in rejection group than the other patient groupbut statistically not significant(p. 0.18 ) and at 3 monthes post transplantation level of β2microglobulin was higher in rejection group than the other patient group but statistically non significant(p. 0.18 ).
Successful transplantation leads to significant decrease in serum β2microglobulin at 2 weeks post tx.(P1 &lt;0.002) and at 3 monthes post tx. (P1&lt;0.001) although in rejection group ,significant decrease in β2microglobulin was at 3 monthes post tx.only(P1&lt;0.005) and at 2 weeks no significant decrease(p1 0.15)

Conclusion
pre transplantation high Cd30 and β2M is associated with poor outcome.failure of decrease of cd30 and β2M post Tx. also associated with poor outcome or infection. Successful transplantation leads to significant decrease in serum cd30 and β2M. which can be used as predictors of graft survival with better sensitivity and specificity than serum creatinin.