Hematological aspects of the COVID-19 syndrome

U.Y. Malkan, I.C. Haznedaroglu

Department of Hematology, Hacettepe University, Faculty of Medicine, Ankara, Turkey. umitmalkan@hotmail.com

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• Hematology
• Infectious Diseases

OBJECTIVE: Viral infections could complicate hematopoiesis and, in some cases, they may worsen the clinical prognosis of blood disorders. SARS-CoV-2 and COVID-19, as a viral disease, can have serious impact on the disease course of hematological neoplastic diseases and can cause hematological complications. The aim of this paper is to review the hematologic aspects of COVID-19 syndrome and the potential management options for SARS-CoV-2 including the convalescent plasma, hemostatic agents and proper anticoagulant treatment.

MATERIALS AND METHODS: Up to February 2022, literature searches were performed using the internet search engines MEDLINE and EMBASE: (i) COVID-19; (ii) Hematology. PRISMA flow diagram described the COVID-19 and hematology search.

RESULTS: According to our COVID-19 and hematology research on research databases, we included 82 studies in the current paper. The issues of the impact of the COVID-19 pandemic on hematological diseases, the role of t-lymphocytes in donor lymphocyte infusion and viruses, hemato-immunologic research in COVID-19, local bone marrow renin-angiotensin system and viral infections, clinical management of COVID-19 infection via hemostatic agents, immune plasma treatment of COVID-19, anticoagulant treatment of COVID-19 associated thrombosis are comprehensively described in this paper.

CONCLUSIONS: The final episode of this pandemic will include the “chimerism-mediated immunotherapy” that will eventually lead to end of the COVID-19 process. The recent Omicron variant seems to have unique evasion effects on the interferon gene expression which will boost the chimerism-mediated immunotherapy without high mortality rates.

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