PMID- 38168737 OWN - NLM STAT- MEDLINE DCOM- 20240222 LR - 20240301 IS - 1537-2995 (Electronic) IS - 0041-1132 (Linking) VI - 64 IP - 2 DP - 2024 Feb TI - Differentiating patient characteristics between platelet refractory patients with and without antibodies to human leukocyte antigens. PG - 210-215 LID - 10.1111/trf.17609 [doi] AB - BACKGROUND: Predicting whether a patient's platelet refractoriness (PR) is due to immune or nonimmune causes can be challenging. This study compared the demographics and clinical history of PR patients with human leukocyte antigen (HLA) antibodies (HLA-PR) versus PR patients without HLA antibodies. MATERIALS AND METHODS: A retrospective review of all patients with PR consults at a single institution over a 3-year period was performed. Patient charts were reviewed for all patients with confirmed PR, and demographic information (e.g., sex, race and ethnicity, preferred language) and clinical history (e.g., pregnancy, transfusion, primary diagnosis) were collected. Patient characteristics were compared among the HLA and non-HLA cohorts. RESULTS: A total of 295 patients with confirmed PR were identified, of whom approximately 70% did not have HLA antibodies and 30% did. Approximately 84% of the HLA-PR cohort was female. A history of transfusions was not associated with HLA-PR (p = .1). A history of pregnancy was strongly associated with the occurrence of HLA-PR (p < .001). Splenomegaly was associated with PR in the absence of HLA alloimmunization whereas infection, fever, bleeding, and disseminated intravascular coagulation were not. CONCLUSION: In this single-institution retrospective review, a history of pregnancy was strongly associated with HLA-PR, whereas a history of transfusion was not. CI - (c) 2024 The Authors. Transfusion published by Wiley Periodicals LLC on behalf of AABB. FAU - Liu, Kelsey AU - Liu K AD - Department of Pathology and Laboratory Medicine, University of California San Francisco, San Francisco, California, USA. FAU - Stephens, Laura AU - Stephens L AUID- ORCID: 0000-0002-9101-9326 AD - Department of Pathology, University of California San Diego, San Diego, California, USA. FAU - Nedelcu, Elena AU - Nedelcu E AUID- ORCID: 0000-0001-5981-9633 AD - Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA. FAU - Bakhtary, Sara AU - Bakhtary S AUID- ORCID: 0000-0002-7896-2459 AD - Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA. LA - eng GR - TR/NCATS NIH HHS/United States GR - NH/NIH HHS/United States GR - TR/NCATS NIH HHS/United States GR - NH/NIH HHS/United States PT - Journal Article DEP - 20240103 PL - United States TA - Transfusion JT - Transfusion JID - 0417360 RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) RN - 0 (Antigens, Human Platelet) SB - IM MH - Pregnancy MH - Humans MH - Female MH - Platelet Transfusion/adverse effects MH - Blood Platelets MH - Blood Transfusion MH - HLA Antigens MH - *Thrombocytopenia MH - Isoantibodies MH - *Antigens, Human Platelet OTO - NOTNLM OT - HLA antibodies OT - alloimmunization OT - platelet refractoriness EDAT- 2024/01/04 01:18 MHDA- 2024/02/22 06:43 CRDT- 2024/01/03 10:57 PHST- 2023/11/07 00:00 [revised] PHST- 2023/07/16 00:00 [received] PHST- 2023/11/07 00:00 [accepted] PHST- 2024/02/22 06:43 [medline] PHST- 2024/01/04 01:18 [pubmed] PHST- 2024/01/03 10:57 [entrez] AID - 10.1111/trf.17609 [doi] PST - ppublish SO - Transfusion. 2024 Feb;64(2):210-215. doi: 10.1111/trf.17609. Epub 2024 Jan 3.