4.2 Article

Benefits and risks of Hematopoietic Stem Cell Transplantation for Systemic Sclerosis: A Systematic Review and Meta-Analysis

Journal

MODERN RHEUMATOLOGY
Volume 33, Issue 2, Pages 330-337

Publisher

OXFORD UNIV PRESS
DOI: 10.1093/mr/roac026

Keywords

systemic sclerosis; stem cell transplantation; long-term outcomes; meta-analysis

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Hematopoietic stem cell transplantation (HSCT) is an effective treatment for systemic sclerosis (SSc), although it is associated with higher treatment-related deaths. However, patients who undergo HSCT have a high survival rate post-transplant.
Objectives We aimed to evaluate the efficacy and safety of hematopoietic stem cell transplantation (HSCT) in patients with systemic sclerosis (SSc). Methods A systematic literature review and meta-analysis were carried out. We compared survival outcomes using the Kaplan-Meier method with patient-level data between HSCT and intravenous pulse cyclophosphamide (IVCY). Additionally, the incidence rate of treatment-related deaths with HSCT was pooled using a random-effect model. Results Of the 2,091 articles screened, 22 were included: 3 randomized controlled trials and 19 observational studies. HSCT studies showed significant improvement in the skin thickness score and lung function. Despite treatment-related deaths being higher in HSCT than in IVCY, the Kaplan-Meier analysis showed a high survival rate 2 years post-transplant (log-rank, P=0.004). The pooled frequency of transplant-related death from 700 SSc patients was 6.30% (95% confidence interval 4.21-8.38). However, the estimated frequency of treatment-related deaths has been reducing over the last decade. Conclusion HSCT is an effective treatment for SSc, but the optimal indications must be carefully determined by balancing the risks.

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