MR-proADM as a Early Biomarker for DGF and AR in Kidney and Liver Transplantation

Overview

To define the sensibility and the specificity of increased levels of MR-proADM for early, non-invasive, diagnosis of AR and DGF after kidney and liver transplantation creating a predictive model for related complications after kidney and liver transplantation based on the pre-operative and post-operative levels of MR-proADM and by a machine learning process.

Detailed description

Despite long-term outcomes of kidney and liver transplantation significantly improved in the last decades, high morbidity and mortality is still an issue at short term after transplantation. Specifically, occurrence of delayed graft function (DGF) and early acute rejection (AR) may cause multi-organ failure or graft failure, admission to intensive care unit, prolonged hospitalization and high-dosage immunosuppressive therapy which might expose patients to several further complications such as infections, neoplasm, and metabolic disease. Consequently, solid organ transplant recipients represent a very frail population at high risk of complications. Therefore, development of new biomarkers for the prevention and early diagnosis of the major post-transplant complications influencing the morbidity and mortality of solid organ transplant recipients are needed. Adrenomedullin (ADM) is a 52-amino acid peptide with a variety of physiologic functions such as immunemodulating activity, direct bactericidal activity, maintenance of renal homeostasis, and vasodilatory activity. Recent study has shown that midregional proADM (MR-proADM) is co-synthesized with ADM in equimolar amounts and has the advantages of a longer half-life, lack of bioactivity and lack of protein binding. MR-proADM has been recognized as a prognostic marker, stratifying the mortality risk in patients with sepsis in intensive care units. Moreover, recently MD-proADM has been also associated with risk of specific organ failure such as acute kidney injury, acute liver damage, acute respiratory distress syndrome and acute cardiac injury. Literature results suggest that recovery of graft function after KT may lead to decrease in plasma MR-proADM level in patients with ESRD, and that plasma MR-proADM level may could increase in the early phases of DGF and AR after KT and LT as a response damage and to the immune activation. The study will allow to evaluate the utility MR-proADM as an early biomarker of DGF and AR in patients undergoing kidney and liver transplantation at our Institution. Also, the study aims to analyze how the value of this biomarker can change in association with post-transplant complication and to create a predicting model by machine cut-off values of references for MR-proADM.

Interventions

• Biological MR-proADM dosage
  Dosage of MR proADM at OLT/KT, 1, 3, 5, 15 POD and 1, 3, 6, 9, 12 months F-U

Primary outcome measures

• Accuracy of MR-proADM as biomarker of DGF and AR in OLT/KT [Time frame: 3 years]

Secondary outcome measures (4)

• Accuracy of MR-proAMD for early detection of other complications in OLT/KT [Time frame: 3 years]
• Algorithm for risk prediction [Time frame: 3 years]
• Digital Pathology Dataset [Time frame: 3 years]
• MR-proADM Online Dataset [Time frame: 3 years]

Eligibility criteria

Inclusion criteria

• Kidney transplant recipient at our Institution
• Liver transplant recipient at our Institution

Exclusion criteria

• Re-transplantation
• Dual kidney transplantation
• Combined transplant (kidney-liver, kidney-pancreas)
• Autoimmune disease as indication to transplant

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model

Cohort

Study locations

Italy · 1 center

• University of Rome Tor Vergata — Rome

Publications

• Legramante JM, Mastropasqua M, Susi B, Porzio O, Mazza M, Miranda Agrippino G, D Agostini C, Brandi A, Giovagnoli G, Di Lecce VN, Bernardini S, Minieri M. Prognostic performance of MR-pro-adrenomedullin in patients with community acquired pneumonia in the Emergency Department compared to clinical severity scores PSI and CURB. PLoS One. 2017 Nov 21;12(11):e0187702. doi: 10.1371/journal.pone.0187702 PMID 29161297
• Minieri M, Di Lecce VN, Lia MS, Maurici M, Bernardini S, Legramante JM. Role of MR-proADM in the risk stratification of COVID-19 patients assessed at the triage of the Emergency Department. Crit Care. 2021 Nov 26;25(1):407. doi: 10.1186/s13054-021-03834-9. No abstract available. PMID 34836547
• Manzia TM, Lai Q, Hartog H, Aijtink V, Pellicciaro M, Angelico R, Gazia C, Polak WG, Rossi M, Tisone G. Graft weight integration in the early allograft dysfunction formula improves the prediction of early graft loss after liver transplantation. Updates Surg. 2022 Aug;74(4):1307-1316. doi: 10.1007/s13304-022-01270-0. Epub 2022 Mar 19. PMID 35306614
• Angelico R, Gerlach UA, Gunson BK, Neil D, Mergental H, Isaac J, Muiesan P, Mirza D, Perera MTP. Severe Unresolved Cholestasis Due to Unknown Etiology Leading to Early Allograft Failure Within the First 3 Months of Liver Transplantation. Transplantation. 2018 Aug;102(8):1307-1315. doi: 10.1097/TP.0000000000002139. PMID 29470351
• Marutsuka K, Nawa Y, Asada Y, Hara S, Kitamura K, Eto T, Sumiyoshi A. Adrenomedullin and proadrenomudullin N-terminal 20 peptide (PAMP) are present in human colonic epithelia and exert an antimicrobial effect. Exp Physiol. 2001 Sep;86(5):543-5. doi: 10.1113/eph8602250. PMID 11571480
• Minamino N, Kikumoto K, Isumi Y. Regulation of adrenomedullin expression and release. Microsc Res Tech. 2002 Apr 1;57(1):28-39. doi: 10.1002/jemt.10048. PMID 11921354
• Kita T, Kitamura K. Translational studies of adrenomedullin and related peptides regarding cardiovascular diseases. Hypertens Res. 2022 Mar;45(3):389-400. doi: 10.1038/s41440-021-00806-y. Epub 2022 Jan 6. PMID 34992239
• Ueda S, Nishio K, Minamino N, Kubo A, Akai Y, Kangawa K, Matsuo H, Fujimura Y, Yoshioka A, Masui K, Doi N, Murao Y, Miyamoto S. Increased plasma levels of adrenomedullin in patients with systemic inflammatory response syndrome. Am J Respir Crit Care Med. 1999 Jul;160(1):132-6. doi: 10.1164/ajrccm.160.1.9810006. PMID 10390390

Identifiers

NCT: NCT06130046 · DARE

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗