PMID- 34166370 OWN - NLM STAT- MEDLINE DCOM- 20211004 LR - 20211210 IS - 1549-1676 (Electronic) IS - 1549-1277 (Print) IS - 1549-1277 (Linking) VI - 18 IP - 6 DP - 2021 Jun TI - Mycophenolate mofetil versus azathioprine in kidney transplant recipients on steroid-free, low-dose cyclosporine immunosuppression (ATHENA): A pragmatic randomized trial. PG - e1003668 LID - 10.1371/journal.pmed.1003668 [doi] LID - e1003668 AB - BACKGROUND: We compared protection of mycophenolate mofetil (MMF) and azathioprine (AZA) against acute cellular rejection (ACR) and chronic allograft nephropathy (CAN) in kidney transplant recipients on steroid-free, low-dose cyclosporine (CsA) microemulsion maintenance immunosuppression. METHODS AND FINDINGS: ATHENA, a pragmatic, prospective, multicenter trial conducted by 6 Italian transplant centers, compared the outcomes of 233 consenting recipients of a first deceased donor kidney transplant induced with low-dose thymoglobulin and basiliximab and randomized to MMF (750 mg twice/day, n = 119) or AZA (75 to 125 mg/day, n = 114) added-on maintenance low-dose CsA microemulsion and 1-week steroid. In patients without acute clinical or subclinical rejections, CsA dose was progressively halved. Primary endpoint was biopsy-proven CAN. Analysis was by intention to treat. Participants were included between June 2007 and July 2012 and followed up to August 2016. Between-group donor and recipient characteristics, donor/recipient mismatches, and follow-up CsA blood levels were similar. During a median (interquartile range (IQR)) follow-up of 47.7 (44.2 to 48.9) months, 29 of 87 biopsied patients on MMF (33.3%) versus 31 of 88 on AZA (35.2%) developed CAN (hazard ratio (HR) [95% confidence interval (CI)]: 1.147 (0.691 to 1.904, p = 0.595). Twenty and 21 patients on MMF versus 34 and 14 on AZA had clinical [HR (95% CI): 0.58 (0.34 to 1.02); p = 0.057) or biopsy-proven subclinical [HR (95% CI): 1.49 (0.76 to 2.92); p = 0.249] ACR, respectively. Combined events [HR (95% CI): 0.85 (0.56 to 1.29); p = 0.438], patient and graft survival, delayed graft function (DGF), 3-year glomerular filtration rate (GFR) [53.8 (40.6;65.7) versus 49.8 (36.8;62.5) mL/min/1.73 m2, p = 0.50], and adverse events (AEs) were not significantly different between groups. Chronicity scores other than CAN predict long-term graft outcome. Study limitations include small sample size and unblinded design. CONCLUSIONS: In this study, we found that in deceased donor kidney transplant recipients on low-dose CsA and no steroids, MMF had no significant benefits over AZA. This finding suggests that AZA, due to its lower costs, could safely replace MMF in combination with minimized immunosuppression. TRIAL REGISTRATION: ClinicalTrials.gov NCT00494741; EUDRACT 2006-005604-14. FAU - Ruggenenti, Piero AU - Ruggenenti P AUID- ORCID: 0000-0002-8394-0879 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. AD - Unit of Nephrology and Dialysis, ASST Papa Giovanni XXIII, Bergamo, Italy. FAU - Cravedi, Paolo AU - Cravedi P AUID- ORCID: 0000-0001-7837-0923 AD - Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America. FAU - Gotti, Eliana AU - Gotti E AD - Unit of Nephrology and Dialysis, ASST Papa Giovanni XXIII, Bergamo, Italy. FAU - Plati, Annarita AU - Plati A AD - Unit of Nephrology and Dialysis, ASST Papa Giovanni XXIII, Bergamo, Italy. FAU - Marasa, Maddalena AU - Marasa M AUID- ORCID: 0000-0003-0712-2329 AD - Unit of Nephrology and Dialysis, ASST Papa Giovanni XXIII, Bergamo, Italy. FAU - Sandrini, Silvio AU - Sandrini S AD - Unit of Nephrology, ASST degli Spedali Civili di Brescia, Brescia, Italy. FAU - Bossini, Nicola AU - Bossini N AD - Unit of Nephrology, ASST degli Spedali Civili di Brescia, Brescia, Italy. FAU - Citterio, Franco AU - Citterio F AUID- ORCID: 0000-0003-0489-6337 AD - Unit of Kidney Transplantation, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy. FAU - Minetti, Enrico AU - Minetti E AUID- ORCID: 0000-0001-9143-8021 AD - Unit of Nephrology, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy. FAU - Montanaro, Domenico AU - Montanaro D AD - SOC di Nefrologia, Dialisi e Trapianto Renale della Azienda Ospedaliero Universitaria "S. Maria della Misericordia," Udine, Italy. FAU - Sabadini, Ettore AU - Sabadini E AD - Unit of Nephrology and Dialysis, ASST Papa Giovanni XXIII, Bergamo, Italy. FAU - Tardanico, Regina AU - Tardanico R AD - Unit of Nephrology, ASST degli Spedali Civili di Brescia, Brescia, Italy. FAU - Martinetti, Davide AU - Martinetti D AUID- ORCID: 0000-0001-5839-1612 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. FAU - Gaspari, Flavio AU - Gaspari F AUID- ORCID: 0000-0001-5941-3481 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. FAU - Villa, Alessandro AU - Villa A AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. FAU - Perna, Annalisa AU - Perna A AUID- ORCID: 0000-0002-9257-0283 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. FAU - Peraro, Francesco AU - Peraro F AUID- ORCID: 0000-0002-5569-5300 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. FAU - Remuzzi, Giuseppe AU - Remuzzi G AUID- ORCID: 0000-0002-6194-3446 AD - Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy. LA - eng SI - ClinicalTrials.gov/NCT00494741 SI - EudraCT/2006-005604-14 PT - Clinical Trial, Phase III PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Pragmatic Clinical Trial PT - Research Support, Non-U.S. Gov't DEP - 20210624 PL - United States TA - PLoS Med JT - PLoS medicine JID - 101231360 RN - 0 (Immunosuppressive Agents) RN - 83HN0GTJ6D (Cyclosporine) RN - HU9DX48N0T (Mycophenolic Acid) RN - MRK240IY2L (Azathioprine) SB - IM MH - Adult MH - Aged MH - Azathioprine/*administration & dosage/adverse effects MH - Cyclosporine/*administration & dosage/adverse effects MH - Drug Therapy, Combination MH - Female MH - Graft Rejection/diagnosis/immunology/*prevention & control MH - Graft Survival/*drug effects MH - Humans MH - Immunosuppressive Agents/*administration & dosage/adverse effects MH - Italy MH - *Kidney Transplantation/adverse effects MH - Male MH - Middle Aged MH - Mycophenolic Acid/*administration & dosage/adverse effects MH - Prospective Studies MH - Time Factors MH - Treatment Outcome PMC - PMC8224852 COIS- The authors have declared that no competing interests exist. EDAT- 2021/06/25 06:00 MHDA- 2021/10/05 06:00 PMCR- 2021/06/24 CRDT- 2021/06/24 17:23 PHST- 2020/02/27 00:00 [received] PHST- 2021/05/23 00:00 [accepted] PHST- 2021/06/24 17:23 [entrez] PHST- 2021/06/25 06:00 [pubmed] PHST- 2021/10/05 06:00 [medline] PHST- 2021/06/24 00:00 [pmc-release] AID - PMEDICINE-D-20-00648 [pii] AID - 10.1371/journal.pmed.1003668 [doi] PST - epublish SO - PLoS Med. 2021 Jun 24;18(6):e1003668. doi: 10.1371/journal.pmed.1003668. eCollection 2021 Jun.