Eltrombopag

(Promacta®)

Promacta®

Drug updated on 9/4/2024

Dosage FormTablet (oral; 12.5 mg, 25 mg, 50 mg, and 75 mg); Oral suspension (oral; 12.5 mg, 25 mg)
Drug ClassThrombopoietin receptor agonists
Ongoing and
Completed Studies
ClinicalTrials.gov

Indication

  • Indicated for the treatment of thrombocytopenia in adult and pediatric patients 1 year and older with persistent or chronic immune thrombocytopenia (ITP) who have had an insufficient response to corticosteroids, immunoglobulins, or splenectomy. PROMACTA should be used only in patients with ITP whose degree of thrombocytopenia and clinical condition increase the risk for bleeding.
  • Indicated for the treatment of thrombocytopenia in patients with chronic hepatitis C to allow the initiation and maintenance of interferon-based therapy. PROMACTA should be used only in patients with chronic hepatitis C whose degree of thrombocytopenia prevents the initiation of interferon-based therapy or limits the ability to maintain interferon-based therapy.
  • Indicated in combination with standard immunosuppressive therapy for the first-line treatment of adult and pediatric patients 2 years and older with severe aplastic anemia.
  • Indicated for the treatment of patients with severe aplastic anemia who have had an insufficient response to immunosuppressive therapy.

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Summary
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  • Promacta (eltrombopag) is indicated for the treatment of thrombocytopenia in adult and pediatric patients 1 year and older with persistent or chronic immune thrombocytopenia (ITP) who have had an insufficient response to corticosteroids, immunoglobulins, or splenectomy; the treatment of thrombocytopenia in patients with chronic hepatitis C to allow the initiation and maintenance of interferon-based therapy; the first-line treatment of adult and pediatric patients 2 years and older with severe aplastic anemia in combination with standard immunosuppressive therapy; and the treatment of patients with severe aplastic anemia who have had an insufficient response to immunosuppressive therapy.
  • This summary is based on the review of 13 systematic review(s)/meta-analysis(es). [1-13]
  • Immune Thrombocytopenic Purpura (ITP): Eltrombopag significantly improved platelet response in adults (RR, 3.65; 95% CI, 2.39-5.55) and reduced bleeding in children (RR, 0.47; 95% CI, 0.27-0.83).
  • Severe Aplastic Anemia (SAA): Eltrombopag combined with IST increased overall response rate at 3 and 6 months (OR at 3 months = 2.73, 95% CI 1.83-4.09).
  • Chemotherapy-Induced Thrombocytopenia (CIT): Thrombopoietic agents, including eltrombopag, did not significantly affect chemotherapy dose delays/reductions, grade 3/4 thrombocytopenia, platelet transfusions, or bleeding events.
  • Immune Thrombocytopenic Purpura (ITP): No significant increase in thromboembolic events was observed in patients treated with eltrombopag compared to controls (OR=2.32, 95% CI: 0.64-8.47, P=0.20). The incidence of adverse events was similar to placebo in adults (RR, 0.99; 95% CI, 0.55-1.78) and in children (RR, 0.99; 95% CI, 0.25-1.49).
  • Severe Aplastic Anemia (SAA): No significant increase in clonal evolution or other adverse events was observed when eltrombopag was added to IST, with a good safety profile in the pediatric population.
  • General Thrombopoietic Agents: There was no evidence of an increased risk of thrombosis with thrombopoietic agents, including eltrombopag.
  • Eltrombopag shows increased thrombotic risk in ITP patients with advanced age or a history of thrombosis, while efficacy and safety outcomes are mixed in pediatric populations, especially in SAA with IST and ITP, showing heterogeneity by age. No gender-specific differences were reported.

Product Monograph / Prescribing Information

Document TitleYearSource
Promacta (eltrombopag) Prescribing Information.2023Novartis Pharmaceuticals Corporation, East Hanover, NJ

Systematic Reviews / Meta-Analyses

Document TitleYearSource
Thrombopoietin receptor agonists use and risk of thrombotic events in patients with immune thrombocytopenic purpura: a systematic review and meta analysis of randomized controlled trials.2024Biomedical Reports
Efficacy and safety of immunosuppressive therapy combined with eltrombopag for severe aplastic anemia: a systematic review and meta-analysis.2024Systematic Reviews
Thrombopoietin receptor agonists use and risk of thrombotic events in patients with immune thrombocytopenic purpura: a systematic review and meta analysis of randomized controlled trials.2024Biomedical Reports
Eltrombopag for adults and children with immune-refractory thrombocytopenic purpura: a systematic review.2023Journal of Clinical Medicine
The efficacy and the safety of eltrombopag in pediatric patients with severe aplastic anemia: a systematic review.2023Frontiers in Pediatrics
Safety of non peptide thrombopoietin receptor agonists in patients with immune thrombocytopenia: a systematic review and meta analysis of short term double blind randomized clinical trials.2023Experimental and Therapeutic Medicine
Risk of thrombotic events in immune thrombocytopenia patients treated with thrombopoietic agents: a systematic review and meta-analysis. 2023Thrombosis Journal
Safety of non‑peptide thrombopoietin receptor agonists in patients with immune thrombocytopenia: a systematic review and meta‑analysis of short‑term double‑blind randomized clinical trials.2023Experimental and Therapeutic Medicine
Systematic literature review and meta-analysis on use of Thrombopoietic agents for chemotherapy-induced thrombocytopenia.2022PloS one
Efficacy and safety of avatrombopag in patients with chronic immune thrombocytopenia: a systematic literature review and network meta-analysis. 2021Advances in Therapy
Eltrombopag effectiveness and tolerability in chronic immune thrombocytopenia: a meta-analysis.2021Clinical and Applied Thrombosis/Hemostasis
Treatment efficacy for adult persistent immune thrombocytopenia: a systematic review and network meta-analysis.2020British Journal of Haematology
Therapeutic options for adult patients with previously treated immune thrombocytopenia – a systematic review and network meta-analysis.2019Hematology

Clinical Practice Guidelines