Cited by 648Complement system in diseasesImmunodeficiency and Autoimmune DisordersBlood groups and transfusion

Paroxysmal nocturnal hemoglobinuria

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Brodsky, Robert A.·2014·Blood

Abstract

Paroxysmal nocturnal hemoglobinuria (PNH) is a rare bone marrow failure disorder that manifests with hemolytic anemia, thrombosis, and peripheral blood cytopenias. The absence of two glycosylphosphatidylinositol (GPI)-anchored proteins, CD55 and CD59, leads to uncontrolled complement activation that accounts for hemolysis and other PNH manifestations. GPI anchor protein deficiency is almost always due to somatic mutations in phosphatidylinositol glycan class A (PIGA), a gene involved in the first step of GPI anchor biosynthesis; however, alternative mutations that cause PNH have recently been discovered. In addition, hypomorphic germ-line PIGA mutations that do not cause PNH have been shown to be responsible for a condition known as multiple congenital anomalies-hypotonia-seizures syndrome 2. Eculizumab, a first-in-class monoclonal antibody that inhibits terminal complement, is the treatment of choice for patients with severe manifestations of PNH. Bone marrow transplantation remains the only cure for PNH but should be reserved for patients with suboptimal response to eculizumab.

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  • The PIGA gene is required for the synthesis of glycophosphotidylinositol (GPI) and its loss results in down-regulation of several cell surface proteins that are GPI anchored.

    “The PIGA gene is required for the synthesis of glycophosphotidylinositol (GPI) and its loss results in down-regulation of several cell surface proteins that are GPI anchored 60.”

    From Clonal hematopoiesis in human aging and disease (2019) · cites this paper as [60]

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Authors
Brodsky, R. A.
Affiliations
Johns Hopkins University (US)
Corresponding author
Brodsky, Robert A.
Venue
Blood
Published
2014-10-30
Volume
124
Issue
18
Pages
2804-2811
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1978700432
Cited by
648
References
90
Citations by year
2026: 60 · 2025: 64 · 2024: 64 · 2023: 50 · 2022: 68 · 2021: 66 · 2020: 60 · 2019: 52 · 2018: 39 · 2017: 38 · 2016: 29 · 2015: 41 · 2014: 8 · 2013: 8 · 2012: 1
FWCI
3.77
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Maryland Stem Cell Research Fund
  • National Institutes of Health
  • National Cancer Institute (P01-CA70970, P01CA070970)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Complement system in diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
  • Health Sciences › Medicine › Hematology › Blood groups and transfusion
Keywords
paroxysmal nocturnal hemoglobinuria, bone marrow failure, hemolytic anemia, thrombosis, CD55, CD59, complement activation, PIG-A mutation, glycosylphosphatidylinositol anchor biosynthesis, eculizumab, complement inhibition, bone marrow transplantation
MeSH terms
Hemoglobinuria, Paroxysmal, Humans, Monitoring, Physiologic, Mutation, Bone Marrow Transplantation, Glycosylphosphatidylinositols

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