The effect of coexistence of the prothrombotic Factor V Leiden mutation on the phenotypical expression in hemophilia is still debatable. Six-year-old boy with severe hemophilia A had presented with large soft tissue hematoma, treated with Factor VIII concentrate. Simultaneous Factor V Leiden mutation had resulted in attenuation of clinical features.
Keywords: Factor V Leiden mutation; hemophilia A; phenotypical expression.
Copyright: © 2019 Journal of Family Medicine and Primary Care.