Faculty Bibliography

BACKGROUND/UNASSIGNED:Vascularized composite allotransplantation (VCA) has achieved significant advancements in reconstructive surgery through pioneering efforts in face, upper extremity, and whole-eye transplantations. The VCA program at New York University Langone Health has pursued these efforts since its inception in 2013. METHODS/UNASSIGNED:This review documents the evolution of the VCA program, highlighting 4 critical cases that demonstrate the program's innovative approach to surgical challenges and patient care. Each case study reveals the integration of computerized surgical planning, meticulous preoperative preparations, postoperative outcomes, and key institutional metrics. RESULTS/UNASSIGNED:Notable achievements include the first successful combined face and bilateral hand transplantation, and the first combined face and whole-eye transplantation, with improved procedural efficiencies such as reduced hospital and intensive care unit length of stay and operative durations over time. Furthermore, the program's focus on multidisciplinary collaboration has enhanced patient outcomes and operational procedures. CONCLUSIONS/UNASSIGNED:These efforts not only mark significant milestones in VCA but also contribute to the broader surgical and microsurgical fields by refining techniques that minimize resource use and optimize patient recovery and quality of life.

BACKGROUND/UNASSIGNED:As anatomy curricula in medical schools transition from cadaveric dissection to digital alternatives, medical educators must seek novel strategies to maintain student engagement. To address this challenge, we aimed to integrate an online module and lecture on facial transplantation (FT) into the head and neck anatomy medical school curriculum and assess its effectiveness. METHODS/UNASSIGNED:An online learning module paired with a lecture was created, with shared learning objectives based on the principles of FT. Through multimedia learning, clinically relevant content was used to teach anatomy through surgical videos supplemented with animations. Knowledge assessments followed National Board of Medical Examiners guidelines and were validated by 4 experts. Pre- and posttests evaluated confidence, knowledge, and satisfaction. RESULTS/UNASSIGNED:< 0.001). Students agreed that the module was stimulating, interesting, clear, effective, and allowed for better learning, and stated that they would recommend it to others. Eighty-five percent of students rated the lecture overall as excellent. CONCLUSIONS/UNASSIGNED:FT provides an engaging and effective application for preclinical medical students to integrate curricular content. Involvement of plastic surgeons in the curriculum can create motivating opportunities for students to enhance their medical education and anatomical knowledge, while receiving an early introduction to fundamental principles of plastic and reconstructive surgery.

BACKGROUND/UNASSIGNED:Vascularized composite allotransplantation (VCA) restores complex defects when conventional reconstruction is not feasible. However, lifelong immunosuppression introduces substantial risks, including posttransplant malignancies. This study aims to characterize the incidence, timing, management, and outcomes of posttransplant malignancies in VCA recipients to inform future surveillance and management guidelines. METHODS/UNASSIGNED:A systematic review was conducted according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 guidelines using PubMed, Scopus, Web of Science, and Cochrane. Eligible studies included patients who underwent VCA and developed a subsequent malignancy. Collected data included demographics, transplant and malignancy details, and survival. RESULTS/UNASSIGNED:Fifteen studies comprising 15 unique VCA recipients were included. Transplants involved the face (37.5%), upper extremity (37.5%), scalp (12.5%), lower extremity (6.25%), and abdominal wall (6.25%). Median time to first malignancy was 1.89 years posttransplant. Across all cases, 24 malignancies were reported, most commonly nonmelanoma skin cancer (60%) and posttransplant lymphoproliferative disorder (33%). Notably, 85% of skin cancers developed at nonallograft sites. Overall survival was 53.3%. All patients with skin cancer alone survived, whereas posttransplant lymphoproliferative disorder carried a 50% mortality rate. Median time from malignancy to death was 5.5 years, and from transplant to death, 10.1 years. CONCLUSIONS/UNASSIGNED:Recipients of VCA demonstrate increased malignancy risk, particularly nonmelanoma skin cancers and lymphoma, with a typical onset of 2 years posttransplant. Dermatologic surveillance focusing on native skin, Epstein-Barr virus viral load monitoring in high-risk recipients, and regular follow-up are essential and may aid early detection.

Vascularized composite allotransplantation (VCA) is increasingly recognized as a reconstructive option that offers substantial benefits for patients with severe tissue loss, including injuries affecting the face and hand. Despite its clinical promise, VCA remains limited by surgical complexity, the need for long-term immunosuppression, and associated morbidity. Preclinical models are therefore essential for refining surgical techniques, testing novel immunomodulatory approaches, and investigating ischemia/reperfusion injury. Compared with large-animal models, rodent models offer advantages in accessibility and cost while adhering more closely to the 3Rs principles of Replacement, Reduction, and Refinement. Among them, the mouse offers unique advantages, including the availability of humanized strains, a broad panel of well-characterized antibodies, and compatibility with advanced immunological assays. These features make the mouse particularly valuable for translational VCA research. Murine VCA, however, requires demanding supermicrosurgical skills, as vascular anastomoses are performed on vessels measuring approximately 0.3-0.5 mm in diameter. To enhance reproducibility, we provide technical tips that have proven critical to the success of these procedures. These include the insertion of a nylon filament into the vessel lumen to stabilize the anastomosis, careful separation of the artery and vein over a sufficient distance along the pedicle, precise anesthetic dosing, and specific maneuvers to prevent pedicle twisting. We also highlight common pitfalls and errors, offering practical guidance to improve outcomes. Here, we describe a comprehensive, stepwise protocol for mouse heterotopic hindlimb-to-neck transplantation, accompanied by instructional video material. This non-functional model minimizes postoperative morbidity compared with orthotopic transplantation while providing robust and reproducible results. It is ideally suited for training in supermicrosurgery and for addressing key experimental questions in VCA, including immune tolerance, graft preservation, and ischemia/reperfusion mechanisms. This methodology provides investigators with a reliable murine platform to advance translational VCA research and to develop innovative strategies aimed at improving outcomes in reconstructive transplantation.

Vascularized composite allotransplantation (VCA) involves immunologically heterogeneous tissues with a high incidence of acute rejection. Reliable and timely detection of rejection onset remains a major unmet challenge in VCA management. This longitudinal exploratory case study assessed blood- and tissue-derived biomarkers for acute rejection monitoring in a full-face and bilateral hand transplant recipient over 4.6 years. Of these biomarkers, donor-derived cell-free DNA (dd-cfDNA) and short tandem repeats (STR) showed trends toward elevated recipient levels during acute rejection, though differences were not statistically significant. CD8⁺ T-cell percentages increased before acute rejection onset, highlighting a temporal association. Anti-angiotensin II type 1 receptor antibody (AT1R-Ab) levels did not differ significantly between acute rejection and non-rejection episodes, possibly due to prophylactic immune cell depletion. While dd-cfDNA and STR levels correlate with rejection episodes and reflect key graft cellular events, CD8⁺ T-cell dynamics demonstrated the strongest temporal association with rejection episodes in this patient, though no biomarker showed statistically significant differences. These exploratory findings support the need for further longitudinal, multi-patient studies to validate emerging biomarkers and refine rejection monitoring strategies in VCA.

BACKGROUND:Facial transplantation offers transformative solutions for patients with severe facial disfigurements. Minimizing ischemia time is critical for preserving tissue viability, and prioritizing facial allograft recovery during multiorgan procurement aims to optimize outcomes. This study evaluates whether prioritizing facial allograft procurement affects the outcomes of non-vascularized composite allotransplantation (VCA) organ transplants. METHODS:This retrospective study analyzed 4 VCA donor recoveries and face transplants at our center. Perioperative data, including operation times, blood pressure, oxygenation, urine output, and blood product administration, were recorded. Donor data were verified using the United Network for Organ Sharing database, institutional records, and data from LiveOnNY and Gift of Life organ procurement organizations to assess recipient and graft survival. RESULTS:Twenty-one allografts (VCAs and organs) were transplanted into 16 patients. The 1-year patient survival rate was 92% (11 of 12) among non-VCA recipients. One patient died during surgery, and 2 patients died more than 3 years after transplantation from unrelated causes. Three non-VCA graft failures occurred within the first year, resulting in an 87% graft survival rate. The median ischemia time for face transplants was 3 hours 18 minutes. Preoperative planning, including cadaveric rehearsals, computerized surgical plans, and 3-dimensionally printed cutting guides, contributed to stable perioperative parameters and reduced blood loss. CONCLUSIONS:This study suggests that prioritizing facial allograft procurement is feasible and does not appear to compromise non-VCA organ transplant outcomes. Further multicenter studies are needed to validate these findings and further refine protocols.

BACKGROUND/UNASSIGNED:Citation analysis is a useful bibliometric tool to identify impactful publications and trace the evolution of a specialty or a technique. In the past three decades, the research on vascularized composite allotransplantation (VCA) has grown exponentially but very few studies have examined the most influential papers in this field. METHODS/UNASSIGNED:The Web of Science Core Collection database was searched for articles published from inception to August 4th, 2025. Titles, full authors' names, years of publication, source journals, regions of origin, and numbers of citations were recorded. VCA anatomical location, main topics, and citation density were determined. Articles were ranked based on number of citations and citation density; they were then categorized based on methodology, study design, and main topic. RESULTS/UNASSIGNED: = 51) were classified as level 4. DISCUSSION/UNASSIGNED:This list of the top 100 most-cited articles highlights seminal and influential papers in VCA. It also demonstrates the relative novelty of this field with ongoing efforts in immunological research to allow its further expansion. The present study provides an understanding of VCA evolution while directing future clinical and preclinical studies.

PURPOSE/OBJECTIVE:To describe the first successful whole eye transplantation (WET) in a human, performed with concurrent partial face transplantation, and to characterize postoperative outcomes. DESIGN/METHODS:Case report. PARTICIPANT/METHODS:A 46-year-old male with severe facial and ocular deficits following high-voltage electrical injury, including left eye enucleation and extensive soft tissue and aesthetic deformities. METHODS:Comprehensive preoperative evaluation, precise microsurgical techniques including vascular anastomosis and optic nerve coaptation, and serial postoperative assessments with optical coherence tomography (OCT), fluorescein angiography (FA), electroretinography (ERG), and visual evoked potentials (VEP). MAIN OUTCOME MEASURES/METHODS:Sustained globe viability, vascular perfusion, retinal structural integrity, and electrophysiological function. RESULTS:The transplanted globe demonstrated robust vascular perfusion and structural preservation over 12 months. Outer retinal function was maintained, as indicated by ERG, despite retinal nerve fiber layer loss and optic nerve transection. VEP confirmed absence of visual perception. The procedure achieved substantial aesthetic restoration. CONCLUSIONS:This study establishes the feasibility of WET in humans, with sustained globe viability and preserved outer retinal function. These findings serve as a critical step toward future exploration of ocular transplantation.

BACKGROUND:Composite allotransplantation has become a viable reconstructive option for selected patients, but preservation remains a major barrier to broader clinical application. Static cold storage is the current gold standard, yet ischemia reperfusion injury and limited preservation times restrict its effectiveness. Recent advances in machine perfusion and subzero nonfreezing storage (or supercooling) have prompted renewed interest in optimizing graft viability. METHODS:Following PRISMA guidelines, we systematically searched PubMed, EMBASE, and Cochrane, covering studies published from June 2022 to August 2025 for studies on ex vivo preservation of vascularized composite allotransplantations. Eligible articles included original studies in English evaluating postharvest, pretransplant preservation strategies. Data extracted were study design, preservation methods, perfusates, and primary outcomes. Risk of bias was assessed using SYRCLE for animal studies and Joanna Briggs Institute for human/cadaver studies. RESULTS:Seventeen studies met the inclusion criteria: 1 on static cold storage, 13 on machine perfusion, and 3 on supercooling. Static cold storage research has declined, with the only recent study investigating subnormothermic machine perfusion as a recovery adjunct. Machine perfusion studies focused on the optimization of perfusion parameters, perfusate composition, and circuit design. Red blood cell-based perfusates remained common, but alternative oxygen carriers such as polymerized hemoglobin-based oxygen carrier-201 and dextran oxygen microcarriers showed promise despite edema-related challenges. Supercooling studies demonstrated the feasibility of multiday preservation in rodent and porcine models. Overall, risk of bias was high or unclear across animal studies, mainly due to selection and performance bias, whereas the single human ex vivo study showed low risk of bias. CONCLUSIONS:The field of vascularized composite allograft preservation is expanding rapidly, with a combination of static and dynamic techniques emerging as a promising option to extend graft viability beyond the current limits. However, translation to clinical setting remains limited by small preclinical studies, methodological heterogeneity, and the paucity of functional endpoints. Standardized protocols, robust large-animal models, and eventual human feasibility trials are needed to establish clinically applicable preservation strategies.

BACKGROUND/UNASSIGNED:This study aimed to develop a machine learning model to predict seroma risk following prepectoral breast reconstruction. METHODS/UNASSIGNED:-nearest neighbors, decision tree, and random forest. RESULTS/UNASSIGNED:Chart review identified 318 breasts that underwent prepectoral reconstruction, with a seroma rate of 25.58%. Univariate analysis found that body mass index, mastectomy specimen weight, hypertension, neoadjuvant chemotherapy, and skin-sparing mastectomy were positively associated with seroma. Method 1 identified the decision tree to have the highest accuracy (0.81) and area under the receiver operating characteristic curve (0.81). Method 2 improved model performance. The random forest achieved the best results, with an accuracy of 0.81 and an area under the receiver operating characteristic curve of 0.83. A web application was then created using the random forest model to provide real-time seroma risk predictions. CONCLUSIONS/UNASSIGNED:Machine learning models offer a valuable tool for improving clinical decision-making by accurately predicting patient-specific seroma risk in breast reconstruction. Our models outperformed traditional methods in identifying high-risk patients, allowing for tailored surgical techniques and intensified follow-up care.