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Paroxysmal nocturnal hemoglobinuria (PNH) is a debilitating and life-threatening disease in which lysis of PNH red blood cells frequently manifests with chronic hemolysis, anemia, and thrombosis. Renal damage in PNH is associated with chronic hemosiderosis and/or microvascular thrombosis. We determined the incidence of renal dysfunction or damage, defined by stages of chronic kidney disease (CKD), in a large cohort of PNH patients and evaluated the safety and efficacy of the complement inhibitor eculizumab in altering its progression. Renal dysfunction or damage was observed in 65% of the study population at baseline with 21% of patients with later stage CKD or kidney failure (glomerular filtration rate [GFR]
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http://dx.doi.org/10.1002/ajh.21757 DOI Listing Publication Analysis
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Neurol Neuroimmunol Neuroinflamm
November 2025
Department of Neurology, UC Davis Medical Center, Sacramento, CA.
Objectives: Complement factor I (CFI) deficiency is a rare condition that can present with fulminant relapsing CNS autoinflammation. In this report, we highlight the utility of genetic testing in unexplained CNS autoinflammation.
Methods: This case report describes a young adult with partial CFI deficiency, presenting with acute hemorrhagic leukoencephalitis and longitudinally extensive transverse myelitis.
EMBO Mol Med
September 2025
Department of Neurology, Columbia University, New York, NY, 10032, USA.
Spinal muscular atrophy (SMA) is a neurodegenerative disease caused by ubiquitous deficiency in the SMN protein. The identification of disease modifiers is key to understanding pathogenic mechanisms and broadening the range of targets for developing SMA therapies that complement SMN upregulation. Here, we report a cell-based screen that identified inhibitors of p38 mitogen-activated protein kinase (p38 MAPK) as suppressors of proliferation defects induced by SMN deficiency in mouse fibroblasts.
View Article and Find Full Text PDFParoxysmal Nocturnal Hemoglobinuria (PNH) clones are frequently found in hypoplastic myelodysplastic syndromes (hMDS), though less commonly than in aplastic anemia. In contrast, the coexistence of hemolytic PNH with large clones and classical, hypercellular MDS (non-hMDS) is rare and likely underrecognized in clinical practice. Since 2014, 229 MDS patients have been seen at our department.
View Article and Find Full Text PDFFront Immunol
September 2025
Department of Pediatric Nephrology, Radboud University Medical Centre, Amalia Children's Hospital, Nijmegen, Netherlands.
Hemolytic uremic syndrome caused by an invasive infection (SP-HUS) is a rare and severe disease that primarily affects children under two years of age. The pathophysiology of SP-HUS remains poorly understood, and treatment is largely supportive. Complement factor H (FH) is a key regulator of the alternative pathway of the complement system.
View Article and Find Full Text PDFCurr Opin Immunol
September 2025
Univ. Grenoble Alpes, CNRS, CEA, UMR5075, IBS, Laboratoire d'Immunologie, CHU Grenoble Alpes, 38000 Grenoble, France.
C1 Inhibitor (C1INH) is a crucial regulator of multiple plasmatic pathways, including complement, coagulation, kallikrein-kinin systems, and fibrinolysis. C1INH deficiency results in the downstream overproduction of the vasoactive peptide bradykinin (BK), the primary mediator of angioedema (AE), a rare disease characterized by unpredictable attacks of swelling in various locations of the body. C1INH deficiency can be hereditary (caused by a mutation in SERPING1 gene) or acquired (frequently underlying lymphoproliferative disease); C1INH level and functional assays are the golden standard for biological diagnosis of C1INH deficiency.
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