B. Brenner et al., COEXISTENCE OF FAMILIAL ANTIPHOSPHOLIPID SYNDROME AND FACTOR-V LEIDEN- IMPACT ON THROMBOTIC DIATHESIS, British Journal of Haematology, 94(1), 1996, pp. 166-167
Two young siblings who presented with an unusual recurrent severe thro
mboembolic phenomenon were found to have familial anti-phospholipid sy
ndrome and were heterozygous for the factor V R506Q mutation, The coex
istence of hereditary and acquired APC-resistance may explain the seve
rity of thrombo-embolism.