Table of Content

Open Access Editorial

Acknowledgment to Reviewers of OBM Transplantation in 2025

Received: 03 January 2026;  Published: 04 January 2026;  doi: 10.21926/obm.transplant.2601263

Abstract

The editors of OBM Transplantation would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2025. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to the Web [...]

38 104

Open Access Review

Pharmacological Strategies to Enhance Bone Graft Integration: Emerging Agents and Molecular Pathways

Received: 15 May 2025;  Published: 31 December 2025;  doi: 10.21926/obm.transplant.2504262

Abstract

Bone grafting remains a cornerstone technique in orthopedic and reconstructive surgery, yet achieving successful graft integration continues to pose significant challenges, particularly in conditions such as osteoporosis, diabetes mellitus, and large bone defects. Traditional graft materials such as autografts, allografts, xenografts, and synthetics, often encounter limitations including immune rejection, poor vascularization, and insufficient osteogenic support. Emerging pharmacological strategies have shown promi [...]

89 317

Open Access Review

Optimizing Donor Management Strategies for DCD Lung Procurement

Received: 30 June 2025;  Published: 30 December 2025;  doi: 10.21926/obm.transplant.2504261

Abstract

Donation after circulatory death (DCD) offers a vital strategy to expand the donor lung pool; however, DCD lungs are uniquely susceptible to warm ischemic injury during procurement. This chapter reviews evidence-based and emerging donor management strategies aimed at mitigating ischemic damage and optimizing the suitability of DCD lungs for transplantation, encompassing hemodynamic and ventilatory optimization, bronchoscopic clearance, targeted pharmacological interventions, and strategies to minimize transfusion r [...]

59 316

Open Access Review

Risk Assessment in Clinical Histocompatibility Testing: Challenges, Strategies, and Future Directions

Received: 15 July 2025;  Published: 25 November 2025;  doi: 10.21926/obm.transplant.2504260

Abstract

Though the role of clinical histocompatibility testing is fundamental to successful transplant, systematic risk assessment and mitigation strategies remain underutilised in this domain. This review addresses risk identification, analysis, and control measures across the pre-analytical, analytical, and post-analytical phases of clinical histocompatibility testing, in line with international standards such as ISO 15189:2022. A structured, risk-based quality management system (QMS) is imperative for ensuring accurate [...]

214 970

Open Access Original Research

Immunologic Response after COVID-19 Vaccination in Heart Transplant Recipients

Received: 30 June 2025;  Published: 21 October 2025;  doi: 10.21926/obm.transplant.2504259

Abstract

To date, all large-scale randomized controlled trials for COVID-19 vaccines have excluded solid organ transplant recipients; therefore, the effectiveness and safety of COVID-19 vaccines in preventing coronavirus infection using COVID-19 vaccines in patients with heart transplants have not been sufficiently studied. This paper presents the characteristics of humoral and cellular immunity in heart transplant recipients following vaccination against coronavirus infection. The study group consisted of 40 patients who u [...]

332 1661

Open Access Review

Antibody-Mediated Rejection in Kidney Transplantation: Immunopathogenesis, Innate–Adaptive Crosstalk, and Therapeutic Advances

Received: 17 April 2025;  Published: 10 September 2025;  doi: 10.21926/obm.transplant.2503258

Abstract

Antibody-mediated rejection (ABMR) remains a major barrier to long-term graft survival in kidney transplantation. Defined by the presence of donor-specific antibodies (DSAs) and characteristic histological changes, such as C4d deposition in peritubular capillaries, ABMR can present acutely, chronically, or subclinically, often manifesting as graft dysfunction. Recent advances in genomic profiling and diagnostic assays have improved our understanding of its pathophysiology, yet therapeutic strategies remain limited. [...]

859 9712

Open Access Review

Precision Medicine in Liver and Lung Transplantation: Integrating Immunology, Regenerative Therapies, and Computational Advances

Received: 25 May 2025;  Published: 09 September 2025;  doi: 10.21926/obm.transplant.2503257

Abstract

Liver and lung transplantation remain among the most intricate and resource-intensive arenas in modern medicine, challenged by organ scarcity, immunological complexities, and the persistent threat of rejection. According to recent WHO and UNOS reports, approximately 100,000 patients globally await liver transplants annually, with only 30-40% receiving transplants, resulting in waitlist mortality rates of 15-20%. Similarly, lung transplant demand exceeds supply by a factor of 4:1, with 5-year survival rates remainin [...]

602 3180

Open Access Review

The Essentials of Cell-Mediated Immunity Assays for the Management of CMV Infection after Solid Organ Transplantation

Received: 12 March 2025;  Published: 04 September 2025;  doi: 10.21926/obm.transplant.2503256

Abstract

Provided that cell-mediated immunity (CMI) is known to be vital in managing CMV infection post-transplant along with improving methods to predict the development of cytomegalovirus (CMV) following transplant, CMV-specific-cell-mediated immunoassays have been developed, commercially and research based, to be used in conjunction with pre-transplant CMV serological testing and prophylaxis to help tailor an individual care plan post-transplant. In this review, we assess the status of CMV CMI assays, and their potential [...]

417 2678

Open Access Original Research

Duration of Hospitalization is Associated with the Gut Microbiome in Patients Undergoing Hematopoietic Stem Cell Transplantation: Early Results from a Randomized Trial of Home Versus Hospital Transplantation

Received: 24 April 2025;  Published: 25 August 2025;  doi: 10.21926/obm.transplant.2503255

Abstract

Home-based hematopoietic stem cell transplantation (HCT) is an innovative care model with growing interest, but its impact on the gut microbiome remains unexplored in a randomized setting. We present interim results from the first randomized controlled trials (RCT) evaluating the effect of HCT location—home versus hospital—on gut microbial diversity and antimicrobial resistance (AMR) gene carriage. We hypothesize that patients randomized to undergo home HCT would have higher gut taxonomic diversity and lower AMR ge [...]

1156 3787

Open Access Short Report

Donor-Derived Cell-Free DNA Assessment in a Predominantly Hispanic/Latino Lung Transplant Population: Single-Center Analysis

Received: 31 March 2025;  Published: 21 July 2025;  doi: 10.21926/obm.transplant.2503254

Abstract

The demographics of lung transplant (LT) recipients show an evolution towards increased minority racial/ethnic representation, thanks to an increased focus on inclusion in LT access, healthcare and outcomes. Herein we assess potential differences in LT allograft health in a predominantly Hispanic/Latino (HL) vs Non-Latino/White (NLW) cohort during surveillance for acute rejection by analyzing the fraction of donor-derived cell-free DNA (dd-cfDNA%), a plasma biomarker of allograft injury. Of 245 LT recipients, media [...]

479 2645

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