Paroxysmal nocturnal hemoglobinuria (PNH) is a rare acquired clonal stem cell disorder. Eculizumab and bone marrow transplantation are disease-modifying treatments for PNH but may not be readily available in resource-constrained settings. Of 52 pediatric patients with PNH, 20 had classical PNH and 32 had PNH/aplastic anemia (PNH/AA). Median time to diagnosis was 30 months in classical PNH patients. Renal failure was present in four patients (20%). Six (30%) achieved complete response, 10 (50%) achieved partial response with androgens in classical PNH. Two underwent allogenic stem cell transplantation. In the PNH/AA group, 16 (50%) were in CR and seven (21%) were in PR with anti-thymocyte globulin ± cyclosporine.
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http://dx.doi.org/10.1002/pbc.27712 | DOI Listing |
Zhonghua Xue Ye Xue Za Zhi
December 2024
State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China Tianjin Institutes of Health Science, Tianjin 301600, China.
This study enrolled five patients with classic paroxysmal nocturnal hemoglobinuria (cPNH) who underwent allogeneic hematopoietic stem cell transplantation in our hospital from 2019 to 2023. All five patients were male, with a median age of 26 (range: 26-46) years. The median time from diagnosis to allo-HSCT was 5.
View Article and Find Full Text PDFAnn Hematol
September 2024
Division of Hematology, Hospital A Beneficiência Portuguesa, São Paulo, Brazil.
Paroxysmal nocturnal haemoglobinuria (PNH) is a rare, complement-associated, haematological disorder. The level of knowledge about the disease and its management varies around the world. This narrative review provides an overview of available clinical data on PNH in Latin America (LATAM).
View Article and Find Full Text PDFZhonghua Xue Ye Xue Za Zhi
June 2024
The First Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou 310003, China.
To further improve the understanding of paroxysmal nocturnal hemoglobinuria (PNH), we retrospectively analyzed and summarized the clinical characteristics, treatment status, and survival status of patients with PNH in Zhejiang Province. This study included 289 patients with PNH who visited 20 hospitals in Zhejiang Province. Their clinical characteristics, comorbidity, laboratory test results, and medications were analyzed and summarized.
View Article and Find Full Text PDFOrphanet J Rare Dis
July 2024
Department of Hematological and Transfusion Immunology, Institute of Hematology and Transfusion Medicine, Chocimska 5, Warsaw, 00-791, Poland.
Background: Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired hematopoietic stem cell disorder characterized by PIG-A mutations, leading to glycophosphatidylinositol (GPI)-anchored proteins deficiency that triggers hemolysis - a hallmark of the disease. PNH diagnostics is based on high-sensitivity multicolor flow cytometry (MFC), enabling to detect even small populations of PNH cells. In this single-center, retrospective study, we aimed to characterize a cohort of PNH clone-positive patients first time screened from January 1st, 2013 until December 31st, 2022 with MFC according to International Clinical Cytometry Society PNH Consensus Guidelines.
View Article and Find Full Text PDFAnn Acad Med Singap
June 2024
Department of Haematology, Singapore General Hospital, Singapore.
Introduction: Paroxysmal nocturnal haemoglobinuria (PNH) is a rare haematologic disease characterised by intravascular haemolysis, thrombophilia and bone marrow failure. There is a lack of established clinical guidance on the screening, diagnosis and manage-ment of PNH in Singapore. A relatively low level of awareness among healthcare professionals regarding PNH manifestations further contributes to diagnostic delays.
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