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Systematic review and meta-analysis of anti-thymocyte globulin dosage as a component of graft-versus-host disease prophylaxis

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  • Joice Zuckermann
  • Bruno Mateus de Castro
  • Thiago Almirante Cunha
  • Alessandra Paz
  • Leila Beltrami Moreira

Abstract

Rabbit anti-thymocyte globulin (ATG) has been used in allogeneic hematopoietic stem cell transplantation (Allo-HSCT) for graft-versus-host disease (GvHD) prophylaxis. Since the best dose has not been defined yet, this study aimed to determine the efficacy and safety of different doses of ATG in Allo-HSCT. Data sources were MEDLINE/PUBMED, EMBASE, Cochrane Library, Web of Science, LILACS, and SciELO. Studies were eligible when comparing doses of ATG. The higher dose was in the intervention group. A total of 22 articles (2002–2022) were included. Higher doses (4–12 mg/kg) of ATG-T reduced the incidence of grade III-IV acute GvHD (RR 0.60; 95%CI 0.42–0.84) and limited chronic GvHD (RR 0.64 95%CI 0.45–0.92) compared with lower doses (2–7.5 mg/kg). Higher doses increased the Epstein-Barr virus (RR 1.90 95% CI 1.49–2.42) and Cytomegalovirus reactivation (RR, 1.30; 95% CI 1.03–1.64). Relapse rates were higher in the higher dose group (RR 1.34, 95% CI 1.07–167). The ATG-T dose ≥7mg/kg versus the lower dose showed a number needed to treat 7.4 for acute GvHD III-IV, with a number to harm of 7.7 for relapse at one year in the higher dose group. A dose lower than 7 mg/kg suggests a better risk-benefit ratio than a higher one. Well-designed RCT is needed to define the best risk-benefit doses.Trial registration: Trial registration number: PROSPERO: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42020173449.

Suggested Citation

  • Joice Zuckermann & Bruno Mateus de Castro & Thiago Almirante Cunha & Alessandra Paz & Leila Beltrami Moreira, 2023. "Systematic review and meta-analysis of anti-thymocyte globulin dosage as a component of graft-versus-host disease prophylaxis," PLOS ONE, Public Library of Science, vol. 18(4), pages 1-18, April.
    • Handle: RePEc:plo:pone00:0284476
    DOI: 10.1371/journal.pone.0284476
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