How is Glanzmann thrombasthenia classified?

Three types:

• Type I – quantitative reduction in glycoprotein αIIbβ3 levels (< 5%)
• Type II – quantitative reduction in glycoproteins αIIbβ3 levels (5%-20%)
• Type III – qualitative abnormalities that prevent function while allowing reduced or even normal platelet surface expression of glycoproteins αIIbβ3

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