PMID- 35213773 OWN - NLM STAT- MEDLINE DCOM- 20220407 LR - 20220407 IS - 1399-3062 (Electronic) IS - 1398-2273 (Linking) VI - 24 IP - 2 DP - 2022 Apr TI - Viral-specific cytotoxic T-cell responses in HLA-sensitized kidney transplant patients maintained on everolimus and low-dose tacrolimus. PG - e13805 LID - 10.1111/tid.13805 [doi] AB - BACKGROUND: Maintenance with "everolimus + reduced dose tacrolimus" (Ev + Tac(low) ) was reported to reduce the risk of viral infections compared to "tacrolimus + mycophenolate mofetil" (Tac + MMF). Here we examined viremia and viral-specific T-cell (viral-Tc) responses in patients treated with Ev + Tac(low) versus Tac + MMF in highly-human leukocyte antigen (HLA)-sensitized patients. METHODS: HLA-sensitized (HS) kidney transplant patients were monitored pre- and post-transplant for viremia (cytomegalovirus (CMV), BK, and Epstein-Barr virus (EBV)) by polymerase chain reaction (PCR) in 19 Ev + Tac(low) and 48 Tac + MMF patients. For CMV PCR analysis, we compared infection rates in 19 Ev + Tac(low) patients to 48 CMV D+/R- (#28) or CMV D-/R- (#20) Tac + MMF patients. CMV-specific cytotoxic T cell (CMV-Tc) and EBV-specific cytotoxic T cell (EBV-Tc) were evaluated by cytokine flow cytometry, and donor-specific antibody (DSA) levels by Luminex for selected patients in both groups. RESULTS: CMV and EBV viremia rates were similar in Ev + Tac(low) versus Tac + MMF patients, but BK virus (BKV) rates were significantly higher in Ev + Tac(low) patients. No patient in either group developed BK virus-associated allograft nephropathy (BKAN) or post-transplant lymphoproliferative disorders (PTLD). CMV-Tc and EBV-Tc decreased significantly after alemtuzumab induction but returned to pre-treatment levels 1-2 months post-transplant in most patients. de novo DSA was similar in both groups as were patient and graft survival and graft rejection. CONCLUSIONS: CMV-Tc and EBV-Tc were similar in Ev + Tac(low) and Tac + MMF patients. EBV and CMV viremia rates were similar over 1 year. BKV rates were significantly higher in Ev + Tac(low) patients suggesting no benefit for Ev + Tac(low) in enhancing viral-Tc effector functions or limiting viral infections. CI - (c) 2022 Wiley Periodicals LLC. FAU - Ge, Shili AU - Ge S AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Chu, Maggie AU - Chu M AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Tang, Jacqueline AU - Tang J AD - Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Kahwaji, Joseph AU - Kahwaji J AD - Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Karasyov, Artur AU - Karasyov A AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Lovato, Darly AU - Lovato D AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Vo, Ashley AU - Vo A AD - Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Choi, Jua AU - Choi J AD - Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Jordan, Stanley C AU - Jordan SC AD - Comprehensive Transplant Center, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Zhang, Ruan AU - Zhang R AUID- ORCID: 0000-0003-2297-6613 AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. FAU - Toyoda, Mieko AU - Toyoda M AD - Transplant Immunology Laboratory, Cedars-Sinai Medical Center, Los Angeles, California, USA. LA - eng GR - Novartis Institute for Biomedical Research/ PT - Journal Article DEP - 20220303 PL - Denmark TA - Transpl Infect Dis JT - Transplant infectious disease : an official journal of the Transplantation Society JID - 100883688 RN - 0 (Immunosuppressive Agents) RN - 9HW64Q8G6G (Everolimus) RN - HU9DX48N0T (Mycophenolic Acid) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - *Epstein-Barr Virus Infections/drug therapy MH - Everolimus/therapeutic use MH - Graft Rejection MH - Herpesvirus 4, Human MH - Humans MH - Immunosuppressive Agents/therapeutic use MH - *Kidney Transplantation/adverse effects MH - Mycophenolic Acid/therapeutic use MH - T-Lymphocytes MH - Tacrolimus/therapeutic use OTO - NOTNLM OT - BKV OT - CMV OT - EBV OT - HLA sensitized OT - everolimus OT - kidney transplant OT - tacrolimus EDAT- 2022/02/26 06:00 MHDA- 2022/04/08 06:00 CRDT- 2022/02/25 17:17 PHST- 2022/01/21 00:00 [revised] PHST- 2021/10/13 00:00 [received] PHST- 2022/01/31 00:00 [accepted] PHST- 2022/02/26 06:00 [pubmed] PHST- 2022/04/08 06:00 [medline] PHST- 2022/02/25 17:17 [entrez] AID - 10.1111/tid.13805 [doi] PST - ppublish SO - Transpl Infect Dis. 2022 Apr;24(2):e13805. doi: 10.1111/tid.13805. Epub 2022 Mar 3.