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Description This letter to the editor addresses limitations to holding COVID vaccines responsible for the diagnosis of thrombotic thrombocytopenic purpura and discusses the potential differential diagnoses that must be considered.

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Hematologic Complications of Pregnancy.

Eur J Haematol

January 2025

Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, Oregon, USA.

Hematologic complications are common in pregnancy and can significantly impact both maternal and fetal health. Recognizing and treating these complications can be challenging due to the limited evidence available to guide clinical consultants. Iron deficiency anemia is the most prevalent hematologic issue in pregnancy and often occurs due to increased maternal blood volume and the nutritional demands of the growing fetus.

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How rare is rare? The first multi-centre epidemiological study of thrombotic thrombocytopenic purpura in a large Canadian city.

Transfus Apher Sci

December 2024

Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada; Department of Laboratory Medicine, St. Michael's Hospital, Toronto, ON, Canada; Division of Hematology, St. Michael's Hospital, Toronto, ON, Canada. Electronic address:

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Allosteric regulation of ADAMTS13 (A Disintegrin And Metalloproteinase with ThromboSpondin type-1 motif, member 13) activity involves an interaction between its Spacer (S) and CUB1-2 domains to keep the enzyme in a closed, latent conformation. Monoclonal antibodies (mAb) uncouple the S-CUB interaction to open the ADAMTS13 conformation and thereby disrupt the global enzyme latency. The molecular mechanism behind this mAb-induced allostery remains poorly understood.

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Analysis of Risk Factors and the Establishment of a Predictive Model for Thrombosis in Patients with Immune Thrombocytopenia.

Clin Appl Thromb Hemost

January 2025

Department of Rheumatology, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Yunnan Province Clinical Research Center for Hematologic Disease, Kunming, Yunnan, China.

Objectives: To explore the risk factors for thrombi occurring in patients with immune thrombocytopenia (ITP) and establish a risk prediction model to better predict the risk of thrombosis in patients with ITP.

Methods: We retrospectively analyzed 350 ITP patients who had been hospitalized in the First People's Hospital of Yunnan Province between January 2024 and June 2024. For all patients, we recorded demographic characteristics and clinical data, analyzed the risk factors for thrombosis in ITP patients and then developed a risk prediction model.

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