Comparing the Immunologic Responses Between Kidney Transplant Recipients Receiving Standard Immunosuppression and CNI Reduction After Two Doses of ChAdOx-1 and a Booster Dose BNT162b2
American Journal of Transplantation
; 22(Supplement 3):597-598, 2022.
Article
in English
| EMBASE | ID: covidwho-2063379
ABSTRACT
Purpose:
Immunosuppression can impair immunological responses after vaccination in kidney transplant recipients (KTR). However, little is known about the effect of the booster dose of COVID-19 vaccination, with BNT162b2, after two doses of ChAdOx-1 and its response especially comparing among KTR with different immunosuppressive regimen. Method(s) KTRs who had stable allograft function with the regimen of calcineurin inhibitor (CNI) reduction (sirolimus, tacrolimus [Ctrough 2-4 ng/mL], prednisolone;group A) and the standard regimen (tacrolimus [Ctrough 4-7 ng/mL], mycophenolate mofetil, prednisolone;group B) were enrolled for two doses of ChAdOx-1 (three months apart) and a booster dose with BNT162b2 (1 month after ChAdOx-1). KTRs who had history of COVID-19, anti-SARS-CoV-2 antibody positive at baseline, and positive for donor specific antibody (DSA) were excluded. The immune response for vaccination was measured by anti-SARS-CoV-2 antibody one month after two doses of ChAdOx-1 and BNT162b2. DSA (Luminex) was measured at one month after BNT162b2. Result(s) Forty KTR were enrolled with mean age of 47.52 +/- 10.86 years old. There were 21 KTR in group A and 19 KTR in group B. The group A has significantly higher anti-SARS-CoV-2 antibody after 2 doses of ChAdOx-1 (502.05 +/- 612.87 BAU/ml and 66.69 +/-143.01 BAU/ml for group A and B, p < 0.05) and after a booster dose of BNT162b2 (10,291.04 +/- 12,803.95 BAU/ml and 1,264.94 +/-1,935.50 BAU/ml for group A and B, p < 0.05). None of KTRs developed DSA after completing all vaccination including the booster dose. Conclusion(s) The KTR with CNI reduction regimen has significantly higher immunologic response to COVID-19 vaccination. The booster dose of COVID-19 vaccination provides significantly improve in immunological response in both standard and CNI reduction regimens. Two doses of ChAdOx-1 and a booster dose of BNT162b2 did not lead to DSA production in both regimens.
adult; allograft; antibody production; clinical article; conference abstract; controlled study; coronavirus disease 2019; drug megadose; drug therapy; female; human; immune response; immunosuppressive treatment; kidney graft; male; middle aged; surgery; trough concentration; vaccination; mycophenolate mofetil; prednisolone; SARS-CoV-2 antibody; sirolimus; tacrolimus; tozinameran; vaxzevria
Full text:
Available
Collection:
Databases of international organizations
Database:
EMBASE
Topics:
Vaccines
Language:
English
Journal:
American Journal of Transplantation
Year:
2022
Document Type:
Article
Similar
MEDLINE
...
LILACS
LIS