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Paroxysmal nocturnal hemoglobinuria: a rare acquired hematologic disorder
Mónica Santiago Casiano1, Liza M Paulo Malavé, Omayra González Rodríguez
1Hematology-Oncology Section, VA Caribbean Healthcare System and San Juan City Hospital. mscasiano002@yahoo.com
Boletin De La Asociacion Medica De Puerto Rico
|December 6, 2012
Summary
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare blood disorder causing hemolysis and thrombosis. This case report details a successful treatment of PNH in a young female patient using eculizumab.
Area of Science:
- Hematology
- Rare diseases
- Immunology
Background:
- Paroxysmal nocturnal hemoglobinuria (PNH) is a rare acquired clonal hematopoietic stem cell disorder.
- It is characterized by complement-mediated intravascular hemolysis, a propensity for thrombosis, and bone marrow failure.
- PNH results from somatic mutations in the PIGA gene, leading to a deficiency of glycosylphosphatidylinositol (GPI)-anchored proteins.
Observation:
- A 19-year-old female presented with pancytopenia, a significant decrease in all blood cell types.
- Diagnostic workup revealed paroxysmal nocturnal hemoglobinuria as the underlying cause of her pancytopenia.
- The patient exhibited symptoms consistent with this rare hematological condition.
Findings:
- The patient received a combination of treatments, including blood transfusions, corticosteroids, and eculizumab.
- Significant clinical improvement was observed following the initiation of this therapeutic regimen.
- Eculizumab, a complement inhibitor, proved effective in managing the patient's condition.
Implications:
- This case highlights the importance of considering PNH in young patients presenting with unexplained pancytopenia.
- Early diagnosis and prompt treatment, particularly with targeted therapies like eculizumab, can lead to favorable outcomes.
- Understanding the pathophysiology of PNH is crucial for developing effective management strategies for this rare disorder.
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