PMID- 36102144 OWN - NLM STAT- MEDLINE DCOM- 20221202 LR - 20230413 IS - 1098-1101 (Electronic) IS - 0733-2459 (Print) IS - 0733-2459 (Linking) VI - 37 IP - 6 DP - 2022 Dec TI - The safety and performance of the Spectra Optia apheresis system platelet depletion protocol in patients with elevated platelet counts. PG - 544-552 LID - 10.1002/jca.22009 [doi] AB - BACKGROUND: Thrombocytosis is a presenting and progressive clinical feature found in multiple disease states. It is characterized by high platelet (PLT) counts (>450 x 10(9) /L) and can lead to thrombohemorrhagic events. Thrombocytapheresis or platelet depletion (PLTD) can be performed in acutely symptomatic patients suffering from thrombocytosis and may reduce or prevent acute serious complications associated with thrombocythemia thereby enabling patients to receive potentially curative high-dose chemotherapy. METHODS: This report details the results from 2 clinical studies, one conducted in the European Union (EU) and one in the People's Republic of China, assessing the PLTD procedure on the Spectra Optia Apheresis System. The primary objective of both studies was to assess the safety and performance of the PLTD procedure in patients with elevated PLT counts. RESULTS: Data were collected from 56 participants completing 64 PLTD procedures. The mean percent change in PLT count and collection efficiency (CE1) was 55.1% and 68.5%, respectively. In the EU study, 6 participants experienced a total of 9 adverse events (AEs) and in the China study, 44 participants reported a total of 212 AEs. In both studies, the majority of AEs reported were Grade 2 or lower and no serious AEs, unanticipated adverse device effects, or AEs leading to death were reported. CONCLUSIONS: The data collected within these studies indicate that the PLTD procedure is well tolerated and effective at reducing circulating PLTs in patients suffering from thrombocytosis as evaluated by a percent decrease in PLT count, CE1, and AE incidence. CI - (c) 2022 Terumo BCT Ltd. Inc. Journal of Clinical Apheresis published by Wiley Periodicals LLC. FAU - Lopert, Pamela AU - Lopert P AUID- ORCID: 0000-0002-6625-7832 AD - Terumo BCT, Inc., Lakewood, Colorado, USA. FAU - Abdelrahman, Sohair AU - Abdelrahman S AD - Terumo BCT, Inc., Lakewood, Colorado, USA. FAU - Graybill, Christopher A AU - Graybill CA AD - Terumo BCT, Inc., Lakewood, Colorado, USA. FAU - Rhodes, Jack AU - Rhodes J AD - Terumo BCT, Inc., Lakewood, Colorado, USA. FAU - Sorensen, Betina AU - Sorensen B AD - Aarhus University Hospital Skejby, Aarhus, Denmark. FAU - Li, Ming AU - Li M AD - The Second People's Hospital of Shenzhen, Shenzhen, China. FAU - Hu, Yu AU - Hu Y AD - Wuhan Union Hospital, Wuhan, China. FAU - Wu, Depei AU - Wu D AD - The First Affiliated Hospital of Soochow University, Suzhou, China. FAU - Liu, Ligen AU - Liu L AD - Tongren Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China. FAU - He, Pengcheng AU - He P AD - The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China. FAU - Zhang, Xuejun AU - Zhang X AD - The Second Hospital of Hebei Medical University, Xi'an, China. FAU - Huang, Fen AU - Huang F AD - Nanfang Hospital, Guangzhou, China. FAU - Hu, Jianda AU - Hu J AD - Fujian Medical University Union Hospital, Fujian, China. FAU - Bill, Jerry AU - Bill J AD - Terumo BCT, Inc., Lakewood, Colorado, USA. LA - eng GR - Terumo BCT/ PT - Journal Article DEP - 20220914 PL - United States TA - J Clin Apher JT - Journal of clinical apheresis JID - 8216305 SB - IM MH - Humans MH - Platelet Count MH - *Thrombocytosis/therapy MH - Plateletpheresis/methods MH - China PMC - PMC10087614 OTO - NOTNLM OT - collection efficiency OT - essential thrombocythemia OT - myeloproliferative neoplasm OT - platelets OT - therapeutic apheresis OT - thrombocytapheresis OT - thrombocytosis COIS- Pamela Lopert, Sohair Abdelrahman, Christopher A. Graybill, Jack Rhodes, and Jerry Bill were, at the time of the studies, employees of Terumo BCT. The institutions that conducted these clinical trials received support from Terumo BCT. EDAT- 2022/09/15 06:00 MHDA- 2022/12/03 06:00 PMCR- 2023/04/11 CRDT- 2022/09/14 04:32 PHST- 2022/07/11 00:00 [revised] PHST- 2022/03/23 00:00 [received] PHST- 2022/08/18 00:00 [accepted] PHST- 2022/09/15 06:00 [pubmed] PHST- 2022/12/03 06:00 [medline] PHST- 2022/09/14 04:32 [entrez] PHST- 2023/04/11 00:00 [pmc-release] AID - JCA22009 [pii] AID - 10.1002/jca.22009 [doi] PST - ppublish SO - J Clin Apher. 2022 Dec;37(6):544-552. doi: 10.1002/jca.22009. Epub 2022 Sep 14.