4.5 Article

Efficacy of eltrombopag with immunosuppressive therapy for children with acquired aplastic anemia

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Efficacy of combined immunosuppression with or without eltrombopag in children with newly diagnosed aplastic anemia

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Summary: This study compared the efficacy and safety of eltrombopag combined with immunosuppressive therapy and immunosuppressive therapy alone in treatment-naive children with severe and very severe aplastic anemia. The results showed that adding eltrombopag to standard immunosuppressive therapy increased the complete response rate and overall response rate compared to immunosuppressive therapy alone. The greatest benefit from eltrombopag combined with immunosuppressive therapy was observed in patients with severe aplastic anemia, but not in those with very severe aplastic anemia.

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Aplastic anemia: Pathophysiology

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Summary: Bone marrow failure syndromes are a group of hematological conditions characterized by low blood cell counts, which can be classified as constitutional or acquired based on the underlying causes. Constitutional syndromes result from genetic mutations in the hematopoietic stem cells, while acquired syndromes can be caused by external cytotoxic agents or autoimmune attacks. Aplastic anemia is an acquired autoimmune syndrome in which immune cells attack the hematopoietic stem cells, leading to marrow disruption.

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Summary: Severe aplastic anemia, a disease characterized by pancytopenia and a hypocellular marrow, can be treated with immunosuppressive therapy (IST) or hematopoietic stem cell transplant. Adding eltrombopag (EPAG) to the IST regimen improves treatment response rates without increasing the risk of myeloid malignancies. However, relapse remains a challenge, and further optimization of treatment protocols is needed.

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Summary: Patients with severe aplastic anemia (SAA) are treated with bone marrow transplant (BMT) or immunosuppression (IST) depending on individual factors. The addition of eltrombopag (EPAG) to standard IST for SAA improves hematologic responses. However, the rates and characteristics of long-term complications, relapse, and clonal evolution with this new regimen are not yet known. This study reports a cumulative relapse rate of 39% in responding patients and a clonal evolution rate of 15% in all treated patients at 4 years. Relapse occurred at distinct timepoints and most relapsed patients responded to retreatment. Clonal evolution to high-risk abnormalities was noted in 5.7% of patients and was associated with poorer overall survival.
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Eltrombopag added to immunosuppression for children with treatment-naive severe aplastic anaemia

Emma M. Groarke et al.

Summary: The study compared pediatric patients under 18 years of age who received EPAG plus standard IST with a historical cohort who received IST alone, indicating that EPAG did not improve outcomes in children with treatment-naive SAA. However, in adults, EPAG significantly improved overall response rate. Younger children had lower response rates compared to adolescents.

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Summary: The advances in the management of aplastic anaemia (AA) have been successful, with better understanding of the mechanisms underlying the reduction of hematopoietic stem cells (HSCs) and improvements in supportive care. Efforts to increase immunosuppression potency and stimulate HSCs have not achieved better outcomes, but the use of thrombopoietin receptor agonists (Tpo-RA) has been effective in stimulating early HSCs despite high endogenous Tpo levels.

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Summary: This study evaluated the efficacy and safety of standard immunosuppressive therapy and combination therapy with eltrombopag in pediatric severe aplastic anemia patients. The results showed a higher objective response rate in the treatment group with eltrombopag added, and no significant differences in infections between the two therapies.

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Efficacy and safety of eltrombopag in the first-line therapy of severe aplastic anemia in children

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Summary: The study evaluated the efficacy and safety of eltrombopag as a first-line therapy in pediatric patients with aplastic anemia. Results showed significantly increased complete response rates without intolerable side effects compared to historical cohort after 6 months of treatment.

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Efficacy and safety of immunosuppressive therapy with or without eltrombopag in pediatric patients with acquired aplastic anemia: A Chinese retrospective study

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Summary: The study found that the combination of E-PAG and IST therapy was more effective than IST alone in the treatment of pediatric SAA after 6 months, with good tolerability and compliance.

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Role of eltrombopag in severe aplastic anemia treatment in children

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Longitudinal evaluation of eltrombopag in paediatric acquired severe aplastic anaemia

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