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Rosskopf, K; Helmberg, W; Schlenke, P.
Pathogen reduction of double-dose platelet concentrates from pools of eight buffy coats: Product quality, safety, and economic aspects.
Transfusion. 2020; 60(9):2058-2066 Doi: 10.1111/trf.15926 [OPEN ACCESS]
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Führende Autor*innen der Med Uni Graz
Rosskopf Konrad
Schlenke Peter
Co-Autor*innen der Med Uni Graz
Helmberg Wolfgang

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Pathogen reduction (PR) of platelet concentrates (PCs) contributes to the safety of platelet (PLT) transfusion by reducing the risk of transfusion-transmitted infections and transfusion-associated graft-versus-host disease. In vitro quality of pathogen-reduced double-dose PC (PR-PC) made of eight whole blood (WB)-derived buffy coats (BCs) were evaluated. Eight small-volume WB BCs from donors with at least 200 × 109 PLT/L were pooled with an additive solution to produce double-dose PCs (DD-PCs), which were treated with amotosalen/ultraviolet A light in a dual storage processing set, yielding 2 units of PR-PC. Quality controls were undertaken as per European Directive for the Quality of Medicines (EDQM) guidelines. PLT recovery rates were measured. Production costs and savings were compared over the 3 years before and after PR implementation. In the pre-PR period, 19 666 PCs were produced, compared to 17 307 PCs in the PR period. Single BC in the PR period had 41 ± 2 mL, hematocrit 0.39 ± 0.04 and 1.06 ± 0.18 × 1011 PLTs, and showed a recovery of 91% ± 8%. After pooling, separation, PR treatment of DD-PC, and splitting, each single PC had 189 ± 6 mL with 2.52 ± 0.34 × 1011 PLTs, compared to 2.48 ± 0.40 in the pre-PR period. The PLT recovery rate after PR was 87% ± 14%. EDQM requirements were met. An increase of about €12 (+7.5%) per PC from the pre-PR to the PR period was identified. A new production method resulting in two PR-PCs made from pools of 8 BCs with use of one PR set was successfully introduced, and our experience of nearly 3 years demonstrated the high efficacy and in vitro quality of the PR-PCs obtained. © 2020 The Authors. Transfusion published by Wiley Periodicals LLC. on behalf of AABB.

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