Abstract:
:Some prospective studies showed that rabbit antithymocyte globulin was inferior to horse antithymocyte globulin as first-line therapy for patients with severe aplastic anemia. We retrospectively analyzed the clinical outcome of 455 children with severe aplastic anemia who received horse antithymocyte globulin (n=297) or rabbit antithymocyte globulin (n=158) combined with cyclosporine as first-line therapy between 1992 and 2010. The response rates were comparable between the horse and rabbit antithymocyte globulin groups at 3 months [46% (136/294) versus 42% (66/153), P=0.55] and 6 months [60% (178/292) versus 55% (87/143), P=1.0]. Using multivariate analysis, differences in antithymocyte globulin preparations were not associated with response rates. However, 2-year and 10-year overall survival rates in the horse antithymocyte globulin group were significantly better than those in the rabbit antithymocyte globulin group (2-year overall survival: 96% versus 87%, 10-year overall survival: 92% versus 84%, P=0.004). On the basis of multivariate analysis, use of rabbit antithymocyte globulin was a significant adverse factor for overall survival (hazard ratio = 3.56, 95% confidence interval, 1.53 - 8.28, P=0.003). Rabbit antithymocyte globulin caused more profound immunosuppression, which might be responsible for the higher incidence of severe infections. Considering that there are no studies showing the superiority of rabbit antithymocyte globulin over horse antithymocyte globulin, horse antithymocyte globulin should be recommended as a first-line therapy. However, our results justify the use of rabbit antithymocyte globulin as first-line therapy if horse antithymocyte globulin is not available.
journal_name
Haematologicajournal_title
Haematologicaauthors
Jeong DC,Chung NG,Cho B,Zou Y,Ruan M,Takahashi Y,Muramatsu H,Ohara A,Kosaka Y,Yang W,Kim HK,Zhu X,Kojima Sdoi
10.3324/haematol.2013.089268subject
Has Abstractpub_date
2014-04-01 00:00:00pages
664-71issue
4eissn
0390-6078issn
1592-8721pii
haematol.2013.089268journal_volume
99pub_type
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