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Background There is limited current knowledge on feasibility and safety of kidney transplantation in COVID-19 survivors. Methods We present a retrospective cohort study of 75 kidney transplants in patients who recovered from polymerase chain reaction (PCR) confirmed COVID-19 performed across 22 transplant centers in India from July 3, 2020 to January 31, 2021. We detail demographics, clinical manifestations, immunosuppression regimen, laboratory findings, treatment and outcomes. Patients with a previous diagnosis of COVID-19 were accepted after documenting 2 negative SARS-CoV-2 PCR tests, normal chest imaging with complete resolution of symptom for at least 28 days and significant social distancing for 14 days prior to surgery. Results Clinical severity in patients ranged from asymptomatic (n=17, 22.7%), mild(n=36,48%), moderate(n=15,20%) and severe(n=7,9.3%) disease. Median duration between PCR positive to transplant was 60 days (overall) and, increased significantly from asymptomatic, mild, moderate and severe disease (49,57,83,94 days, P-value 0.019) respectively. All recipients and donors were asymptomatic with normal creatinine after surgery at a median (interquartile range) follow up of 81 (56-117) days without any complications relating to surgery or COVID-19. Patient and graft survival was 100%, and acute rejection was reported in 6.6%. Conclusions Prospective kidney transplant recipients post-COVID-19 can be considered for transplantation after comprehensive donor and recipient screening before surgery using a combination of clinical, radiologic, and laboratory criteria, careful pre-transplant evaluation, and individualized risk-benefit analysis. Further large-scale prospective studies with longer follow-up will better clarify our initial findings. Till date, this remains the first largest study of kidney transplantation in COVID-19 survivors.Supplemental Visual Abstract; http://links.lww.com/TP/C180.

BACKGROUND: We undertook this study to define the role of stem cell transplantation (SCT) versus donor-specific transfusion (DST) in tolerance induction and sustenance in living donor renal transplantation (LDRT). METHODS: In this prospective three-armed trial in LDRT with 13 patients each in demographically well-balanced groups, tolerance induction protocol (TIP) was used with SCT in group 1, DST in group 2, and no induction in group 3. Tolerance induction protocol consisted of SCT/DST under conditioning with bortezomib, methylprednisone, rituximab, and rabbit antithymocyte globulin. Transplantation was performed with prednisone in groups 1 and 2 and with triple immunosuppression in group 3, if lymphocyte/flow crossmatch was negative; and if donor-specific antibodies (DSAs) were absent in the first 2 groups. Posttransplant monitoring included serum creatinine (SCr), peripheral T-regulatory cells (pTregs)(127/CD4+/25), and DSA for groups 1 and 2; DSA was eliminated in group 3. Rescue IS was started with rise of SCr/DSA/ rejection. RESULTS: Tolerance induction protocol was safe. Over a mean follow-up of 2 years, no patient/graft was lost in groups 1 and 2. One patient of group 3 lost graft to noncompliance. Protocol biopsies were unremarkable. Rejections were noted in six patients of group 1, five of group 2, and seven of group 3. Donor-specific antibodies were elevated in three patients of both groups. Mean SCr of all groups was similar; however, pTregs were increased posttransplant in groups 1 and 2 versus group 3. Group 1 had sustained rise in pTregs. CONCLUSION: Stem cell transplantation and DST are useful for immunosuppression minimization in LDRT with sustained generation of pTregs with SCT.