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  • Title: [Prevention of platelet transfusion refractoriness and HLA alloimmunization by leukocyte filtered platelet transfusion: a meta analysis].
    Author: Yuan Q, Chen X, Cheng L, Zhou CH, Fu XM, Li YP, Wang NH, Wang L.
    Journal: Zhongguo Yi Xue Ke Xue Yuan Xue Bao; 2011 Aug; 33(4):412-20. PubMed ID: 21906451.
    Abstract:
    OBJECTIVE: To compare and assess the effectiveness of leukocyte-filtered platelet and standard platelet concentrates transfusion in preventing platelet transfusion refractoriness (PTR) and human leukocyte antigen (HLA)-alloimmunization. METHODS: Randomized controlled trials (RCTs) or quasi-RCTs comparing leukocyte-filtered platelet with standard platelet concentrates transfusion (up to December 31, 2009) were searched and identified from Medline, EMBASE, The Cochrane Library, and CBM. A meta-analysis was conducted with Cochrane Collaboration's RevMan 5. 0. RESULTS: The search identified 558 citations in total, in which 7 articles in English were finally included in the meta-analysis. The analysis showed that compared with standard platelet concentrates transfusion, leukocyte-filtered platelet transfusion significantly decreased PTR [ RR = 0. 59, 95% CI (0. 42, 0. 82) , P = 0. 002 ] and HLA-alloimmunization [ RR = 0. 49,95% CI (0. 33, 0. 74) , P =0. 0006]. Subgroup analysis showed that HLA-alloimmunization was significantly reduced by leukocyte-filtered platelet transfusion among the patients with acute myelocytic leukemia [ RR =0.42, 95% CI (0.32, 0.56), P <0. 00001], while no significant difference was detected in patients with acute lymphoblastic leukemia because of the limited sample size [ RR = 0. 50, 95% CI (0. 10, 2.41) , P =0. 39]. CONCLUSIONS: The current evidence shows that leukocyte-filtered platelet transfusion can prevent PTR and HLA-alloimmunization more effectively than standard platelet transfusion. Well-designed large-scale RCTs are still needed to further confirm this finding.
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