Journal
CURRENT RHEUMATOLOGY REPORTS
Volume 15, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1007/s11926-013-0326-2
Keywords
Systemic sclerosis; Therapies; Hematopoietic stem cell transplantation; Cyclophosphamide; Clinical trials; Anti-thymocyte globulin; G-CSF; CD34+stem cells; Immune ablation; ASTIS trial; ASSIST trial; SCOT trial
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Funding
- Amgen
- Roche
- Genentech
- Trubion
- Tonic
- Benecke
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Systemic sclerosis (SSc) is a heterogeneous condition characterized by the deposition of excess collagen in skin and internal organs due to vasculopathy, immune activation, low grade inflammation, and fibrosis. Progressive diffuse cutaneous SSc with organ involvement has a poor prognosis. The employment of autologous hematopoietic stem cell transplantation (HSCT) as a means to escalate immunosuppressive therapy has resulted in rapid and sustained improvement of skin thickening and functional ability, stabilization of major organ function with some improvement of vital capacity in pilot studies, registry analyses, and the phase II ASSIST trial. Results from the phase III ASTIS trial corroborate these findings and show long-termsurvival benefit of HSCT. The ASTIS and SCOT trials will determine whether the benefits of HSCT outweigh the risks of serious adverse events including treatment-relatedmortality of around 6-10% and potential long-term complications. Better patient selection and safer transplant regimens may improve the outcome of HSCT for SSc.
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