Coinheritance of Factor V (FV) Leiden enhances thrombin formation and is associated with a mild bleeding phenotype in patients homozygous for the FVII 9726+5G>A (FVII Lazio) mutation.

doi:10.1182/blood-2003-04-1199

Article

Coinheritance of Factor V (FV) Leiden enhances thrombin formation and is associated with a mild bleeding phenotype in patients homozygous for the FVII 9726+5G>A (FVII Lazio) mutation.

Blood - 1 Dec 2003

Castoldi Elisabetta, Govers-Riemslag Jose W P, Pinotti Mirko, Bindini Debora, Tans Guido, Berrettini Mauro, Mazzucconi Maria Gabriella, Bernardi Francesco, Rosing Jan

Abstract excerpt

We investigated the role of thrombophilic mutations as possible modifiers of the clinical phenotype in severe factor VII (FVII) deficiency. Among 7 patients homozygous for a cross-reacting material-negative (CRM-) FVII defect (9726+5G>A, FVII Lazio), the only asymptomatic individual carried FV Leiden. Differential modulation of FVII levels by intragenic polymorphisms was excluded by a FVII to factor X (FX) gene...

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