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Letters to the Editors: letter in response to Bhogal and colleagues.

We thank Bhogal and colleagues for their positive comments on our manuscript and their perspective on VWF being a potential driver of COVID-19 microvascular thrombosis rather than a mere biomarker of endotheliopathy. It is well-known that VWF promotes neutrophil recruitment to endothelial surfaces under low-shear conditions and supports neutrophil extravasation towards inflamed tissues1 . This pro-inflammatory role of VWF involves two distinct pathways: (1) a direct interaction of neutrophil receptors (PSGL1 and β2-integrins) with VWF, and (2) an indirect interaction in which neutrophils adhere to VWF-bound platelets.