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A unique phenotype of acquired Glanzmann thrombasthenia due to non‐function‐blocking anti‐αIIbβ3 autoantibodies

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Essentials Acquired Glanzmann thrombasthenia (aGT) is generally caused by function‐blocking antibodies (Abs). We demonstrated a unique aGT case due to marked reduction of αIIbβ3 with anti‐αIIbβ3 Abs. The anti‐αIIbβ3 Abs… Click to show full abstract

Essentials Acquired Glanzmann thrombasthenia (aGT) is generally caused by function‐blocking antibodies (Abs). We demonstrated a unique aGT case due to marked reduction of αIIbβ3 with anti‐αIIbβ3 Abs. The anti‐αIIbβ3 Abs of the patient did not inhibit platelet function but reduced surface αIIbβ3. Internalization of αIIbβ3 induced by the Abs binding may be responsible for the phenotype.

Keywords: function blocking; acquired glanzmann; anti iib; glanzmann thrombasthenia; function

Journal Title: Journal of Thrombosis and Haemostasis
Year Published: 2019

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