New York University Langone Transplant Institute, New York, NY, USA.; Columbia Center for Translational Immunology, Department of Medicine, Columbia University, New York, NY, USA.
Dr. Aljabban studies the complex relationship between transplanted pig organs and the human immune system. This includes examining how the human body reacts to these foreign organs over time. He works with specific conditions related to organ transplants, including kidney and heart transplants, and employs advanced techniques to analyze immune responses. By exploring both pre-existing immune reactions and how they can be managed, his research aims to develop methods that can extend the life of transplanted organs, making this revolutionary treatment more viable for patients in need.
Key findings
In a study with over 58,000 patients, those who took cilostazol before surgery had a 44% lower risk of dying over five years compared to those who did not.
Tracking specific T cell clones in the blood showed they expanded before rejection events in pig kidney transplants, providing a potential early warning system for rejection.
Pig kidneys transplanted into a brain-dead human maintained stable function for 61 days, but rejection started at day 33, highlighting the significance of managing pre-existing immune memory.
Using unused clinical blood samples during a study significantly reduced blood drawn from research subjects, providing 62% of plasma needed for the research efficiently.
A review identified that as transplant patients live longer, routine screening for aortic or iliac artery aneurysms is crucial, with an overall development rate of 0.48% in solid organ transplant recipients.
Frequently asked questions
Does Dr. Aljabban study pig-to-human transplants?
Yes, he focuses on xenotransplantation, specifically the transplantation of genetically modified pig organs into humans.
What are the main challenges in Dr. Aljabban's research?
Major challenges involve preventing immune rejection of pig organs, including both antibody-based and T cell-driven rejection.
Is Dr. Aljabban's work relevant for patients needing organ transplants?
Yes, his research aims to improve the success rates of organ transplants, potentially benefiting patients on waiting lists for human organ donations.
What treatments has Dr. Aljabban researched?
He has researched the use of cilostazol as a pre-operative treatment to improve survival rates in patients with severe leg artery disease.
What findings does Dr. Aljabban have regarding immune responses in organ transplants?
His studies have shown that specific immune cell behaviors can indicate impending rejection of transplanted organs, which can be used as an early warning system.
Publications in plain English
Pre-operative Cilostazol in Patients with Chronic Limb Threatening Ischaemia Associated with Improved Survival after Endovascular Revascularisation.
2026
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery
Sansosti AA, Choi B, Munoz J, Aljabban I, Morrissey NJ +2 more
Plain English Researchers analyzed registry data from over 58,000 patients with severe leg artery disease who had minimally invasive procedures, comparing those who took the drug cilostazol before surgery to those who did not. Patients who took cilostazol beforehand had a 44% lower risk of dying over five years and were less likely to lose a limb. These findings support testing cilostazol as a routine pre-operative treatment in this high-risk patient group.
Physiology and immunology of a pig-to-human decedent kidney xenotransplant.
2026
Nature
Montgomery RA, Stern JM, Fathi F, Suek N, Kim JI +48 more
Plain English A gene-edited pig kidney was transplanted into a brain-dead human and kept functioning for a planned 61-day study using only standard approved anti-rejection drugs. The kidney maintained stable electrolyte balance and eliminated the need for dialysis, but antibody-mediated rejection emerged on day 33 and was reversed with plasma exchange and complement inhibition. The study shows a minimally modified pig kidney can sustain human-equivalent kidney function and identifies pre-existing immune cells reactive to pig tissue as a key obstacle to long-term success.
Multi-omics analysis of a pig-to-human decedent kidney xenotransplant.
2026
Nature
Schmauch E, Piening BD, Dowdell AK, Mohebnasab M, Williams SH +68 more
Plain English Researchers studied how the human immune system reacts to a pig kidney transplant in a brain-dead human. They found that specific immune cells in the blood increased significantly, leading to rejection of the kidney by day 33 after the transplant. This research is important because it helps identify ways to improve the success of pig organ transplants in humans, potentially addressing the shortage of available human organs for transplantation.
Prevalence of aortoiliac aneurysms in solid organ transplant recipients using the National Inpatient Sample database.
2025
Journal of vascular surgery
Aljabban I, Sansosti A, Wang P, Camacho GA, Zhang M +5 more
Plain English Using a national hospital database of 34 million patients, researchers measured how often solid organ transplant recipients develop aortic or iliac artery aneurysms. The overall rate was 0.48%, with heart and lung transplant recipients having higher rates than kidney or liver recipients. As transplant patients live longer, routine screening for these aneurysms in high-risk transplant groups becomes increasingly important.
Cardiac Xenotransplantation: Current State and Future Directions.
2025
Circulation
Phillips KG, Aljabban I, Wolbrom DH, Griesemer A, Leacche M +2 more
Plain English This review summarizes the current state of transplanting genetically modified pig hearts into humans, including two cases where patients survived 40 and 60 days. Hyperacute rejection has been largely solved through genetic engineering, but antibody-based and T cell-driven rejection remain major obstacles. The review outlines the experimental models being used to bridge the gap between animal studies and clinical trials.
Xenotransplantation: future frontiers and challenges.
2025
Current opinion in organ transplantation
Jaffe IS, Aljabban I, Stern JM
Plain English Pig organ transplantation into humans has advanced rapidly from animal studies to a handful of compassionate-use cases, with early results revealing key obstacles including antibody-mediated rejection, dangerous drops in platelet counts, and unknown long-term immune responses. As formal clinical trials approach, major decisions remain unresolved: which pig genetic modifications to use, how to suppress the immune system without leaving patients vulnerable to infection, and which patients are appropriate candidates. Addressing these challenges through coordinated, multidisciplinary work will determine whether xenotransplantation can realistically close the gap between organ supply and demand.
Unused Samples from Clinical Blood Draws as a Resource for Maximizing Research Samples while Mitigating Iatrogenic Anemia Risks: A Pilot Study.
2025
medRxiv : the preprint server for health sciences
Jaffe IS, Aljabban I, Kim JI, Dundas N, Khalil K +7 more
Plain English Clinical research draws large volumes of blood from study subjects, but most blood collected for routine clinical tests goes unused and is discarded after analysis. In a 61-day xenotransplant experiment, researchers collected leftover clinical samples from the hospital lab twice weekly, recovering enough plasma to supply 62% of all research plasma needs without taking additional blood from the subject. This recycling approach can meaningfully reduce unnecessary blood loss in patients enrolled in intensive research studies.
Donor-reactive T cells and innate immune cells promote pig-to-human decedent xenograft rejection.
2025
Research square
Fathi F, Suek N, Vermette B, Breen K, Saad YS +14 more
Plain English This study tracked how donor-reactive immune cells behaved during a 61-day pig-to-human decedent kidney transplant. Specific T cell clones that attack pig tissue were detected expanding in blood and the organ, and innate immune cells also contributed to rejection. The findings clarify the combined immune barriers that must be overcome before pig-to-human transplants can succeed in living patients.
Coordinated circulating and tissue-based T cell responses precede xenograft rejection.
2025
bioRxiv : the preprint server for biology
Novikova E, Severa E, Chen H, Doepke E, Chacon F +24 more
Plain English Researchers transplanted a pig kidney-thymus combination into a deceased human and tracked the immune response over 61 days. T cells from the recipient infiltrated the organ and specific clones expanded in blood, tissue, and lymph nodes around rejection events. This reveals that T cell-driven rejection of pig organs in humans closely mirrors what happens with human-to-human transplants, informing how future immunosuppression strategies must be designed.
Practice patterns in utilization of atherectomy and embolic protection devices in inpatient and outpatient treatment settings.
2024
Journal of vascular surgery
Sansosti AA, Munoz J, Lazar AN, Zenilman AL, Mehta A +6 more
Plain English This study compared use of atherectomy (plaque-removal devices) and embolic protection devices in hospitals versus office-based labs for treating blocked leg arteries, using registry data from nearly 2,850 matched patient pairs. Embolic protection devices were used far less often in office labs (4.4%) than in hospitals (40%), yet immediate complications were similar between settings. Patients treated in office labs were 18% more likely to need a repeat procedure within two years, raising questions about long-term outcomes as more of these procedures shift outside hospitals.
Single center utilization and post-transplant outcomes of thoracoabdominal normothermic regional perfusion deceased cardiac donor organs.
2024
Clinical transplantation
Motter JD, Jaffe IS, Moazami N, Smith DE, Kon ZN +9 more
Plain English A technique called thoracoabdominal normothermic regional perfusion (TA-NRP) restores blood flow to organs in donors who die after cardiac arrest before the organs are removed, potentially improving their quality. In 22 such donors at a single center, organ use rates were high across all organ types, and kidney recipients had a lower rate of delayed graft function compared to standard cardiac-death donors. The results support TA-NRP as a promising procurement method, with comparable recipient outcomes to traditional donation approaches.
Novel intragraft regulatory lymphoid structures in kidney allograft tolerance.
2022
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons
Rosales IA, Yang C, Farkash EA, Ashry T, Ge J +13 more
Plain English In a mouse kidney transplant model, researchers discovered that accepted grafts rapidly develop specialized clusters of regulatory immune cells around blood vessels inside the organ itself, which they named TOLS. These structures form independently of lymph nodes, spleen, and thymus, and their molecular signature at one week after transplant can predict whether a graft will be accepted or rejected long-term. TOLS represent a previously unrecognized mechanism by which the transplanted organ actively promotes its own tolerance.
Internal Hernia With Incarceration of the Cecum: A Case Report After Simultaneous Kidney-Pancreas Transplant.
2022
Transplantation proceedings
Aljabban I, Llore-Holzner N, Ratner L, McCune K
Plain English A case report describes a patient who developed a rare surgical complication after receiving a simultaneous kidney and pancreas transplant: the large intestine became trapped in a gap created by the transplanted ureter and the abdominal wall. The bowel was freed and the ureteral connection was revised to close the space and prevent recurrence. Prompt surgical recognition avoided serious harm, and the case adds to the literature on post-transplant complications.
Pediatric whole body MRI detects causative ovarian teratoma in opsoclonus myoclonus syndrome.
2020
Radiology case reports
Park C, Aljabban I, Fanburg-Smith JC, Grant C, Moore M
Plain English A 16-year-old with opsoclonus myoclonus syndrome — a neurological condition involving abnormal eye movements, imbalance, and limb movements — was evaluated with whole-body MRI, which identified an ovarian teratoma as the cause. Surgical removal of the tumor led to complete resolution of neurological symptoms. The case supports using whole-body MRI in children with this condition to find hidden tumors without exposing them to radiation.
Precision annotation of digital samples in NCBI's gene expression omnibus.
2017
Scientific data
Hadley D, Pan J, El-Sayed O, Aljabban J, Aljabban I +14 more
Plain English Researchers built a web platform called STARGEO that lets users add standardized labels to the millions of genomic data samples stored in the public Gene Expression Omnibus database, which are otherwise hard to search due to inconsistent descriptions. Graduate students using the platform rapidly produced accurate, consistent annotations across diverse diseases, and the curated data were used to identify reliable genomic signatures of breast cancer. The tool makes a massive public genomics resource far more useful for large-scale disease research.
A Defective Meiotic Outcome of a Failure in Homologous Pairing and Synapsis Is Masked by Meiotic Quality Control.
2015
PloS one
Mei F, Chen PF, Dombecki CR, Aljabban I, Nabeshima K
Plain English In roundworm studies, researchers found that a mutation in the gene mrg-1 causes most reproductive cells to fail at pairing and aligning chromosomes during cell division, yet the worms still produce functional eggs because the body's quality control system eliminates most of the defective cells. Only when that quality control was disabled did the full extent of the chromosome-pairing failure become visible. This reveals that meiotic quality control can mask genetic defects, meaning similar mutations in other organisms may have been missed in past genetic screens.