Establishing the First Glomerulonephritis Registry in Lebanon: Preliminary Findings from AUBMC

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Establishing the First Glomerulonephritis Registry in Lebanon: Preliminary Findings from AUBMC

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Co-author 1

Karima Wehbe kw20@aub.edu.lb American University of Beirut Internal Medicine-Nephrology and Hypertension Beirut Lebanon -

Co-author 2

Abdelkader Addam aa571@aub.edu.lb American University of Beirut Internal Medicine-Nephrology and Hypertension Beirut Lebanon -

Co-author 3

Jamila Kaakour jk124@aub.edu.lb American University of Beirut Internal Medicine-Nephrology and Hypertension Beirut Lebanon -

Co-author 4

Hala Kfoury Kassouf hk113@aub.edu.lb American University of Beirut Pathology and Laboratory Medicine Beirut Lebanon -

Co-author 5

Ali Abu-Alfa abualfa@aub.edu.lb American University of Beirut Internal Medicine-Nephrology and Hypertension Beirut Lebanon *

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Introduction

Glomerular diseases are common causes of CKD and ESKD in the Middle East, with consanguinity being prevalent in the region. Lebanon lacks a national a glomerular disease or kidney biopsy registry, despite wide availability of tissue diagnosis. We launched the first glomerular disease registry in Lebanon at the American University of Beirut Medical Center (AUBMC), the largest academic medical center in the country and present a first report of its inaugural cohort.

Methods

The registry’s goal is to include all patients with a kidney biopsy done at AUBMC after January 2000 using an IRB-approved informed consent for all alive patients at time of entry in the registry. As an initial step, 132 biopsies done between January and October 2025 were identified and the patients enrolled in the registry. Final diagnoses made by a nephropathologist were entered, with many biopsies evaluated using electron microscopy (EM) in addition to light and immunofluorescence (IF) microscopy.

Results

The cohort’s mean age was 53.9±15.9 years with 57.5 % being male. The three most common diagnoses were: Focal Segmental Glomerulosclerosis (33.6 %), IgA nephropathy (18.2 %) and membranous nephropathy (12.4 %). Rarer entities comprised 17.5 % of the cohort and included Thin Basement Membrane Disease, Alport syndrome, fibrillary glomerulonephritis, C3 glomerulopathy and AL renal amyloidosis. Median estimated glomerular filtration rate (eGFR) at biopsy was 48.5 ml/min/1.73 m² and median proteinuria was 2.65 g/24 h.

Conclusion

The AUBMC Glomerular Disease registry provides the first systematic description of glomerular diseases in Lebanon. These findings highlight the need for robust, multicenter data collection and support expansion of this registry into a national consortium to improve diagnosis, management and research of glomerular disease in Lebanon.

Kewords