Maternal factor V Leiden mutation is associated with HELLP syndrome in Caucasian women.
OBJECTIVE
There is growing evidence that hypertensive pregnancy complications and other adverse pregnancy outcomes are associated with the presence of inherited or acquired thrombophilias. As hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome is one of the most severe forms of pre-eclampsia we aimed to assess the prevalence of the factor V Leiden, the prothrombin 20210G >A mutation and the methylenetetrahydrofolate reductase (MTHFR) 677C >T polymorphism in women with HELLP syndrome and in their fetuses from the same index pregnancy.


METHODS
The study was performed retrospectively in a case-control design.


METHODS
Seventy-one mother-child pairs with HELLP syndrome and 79 control mother-child pairs with uncomplicated pregnancies were included in the study.


METHODS
Genotyping of the three thrombophilic mutations was performed using the LightCycler technology. The chi-squared test was used for statistical analysis. Main outcome measures were maternal and fetal genotypes and their correlation with clinical parameters.


RESULTS
Maternal heterozygosity for factor V Leiden was significantly more prevalent in the HELLP group than in controls (OR 4.45, 95% CI 1.31-15.31). No significant association was observed for maternal prothrombin mutation or MTHFR polymorphism (p=0.894, p=0.189, respectively). The fetal genotype was not associated with HELLP syndrome for any of the three mutations investigated. Analysis of gene-gene interactions and genotype-phenotype correlation with respect to clinical parameters and perinatal outcome revealed no further differences.


CONCLUSIONS
Our study confirms that women heterozygous for factor V Leiden have an increased risk of developing HELLP syndrome, while the most frequent mutations of the prothrombin and MTHFR gene do not play a major role in the pathogenesis of HELLP syndrome.
Muetze
Sabine
S
Department of Obstetrics and Gynecology, RWTH Aachen University Hospital, Aachen, Germany. smuetze@ukaachen.de
Leeners
Brigitte
B
Ortlepp
Jan R
JR
Kuse
Sabine
S
Tag
Carmen G
CG
Weiskirchen
Ralf
R
Gressner
Axel M
AM
Rudnik-Schoeneborn
Sabine
S
Zerres
Klaus
K
Rath
Werner
W
D020016:Activated Protein C Resistance / Q000235:genetics; D000328:Adult; D016022:Case-Control Studies; D005165:Factor V / Q000235:genetics*; D005260:Female; D005838:Genotype; D017359:HELLP Syndrome / Q000235:genetics*; D006801:Humans; D011247:Pregnancy; D012189:Retrospective Studies; D044465:White People
C095381:factor V Leiden; D005165:Factor V