VEGF 936C/T Polymorphism and Gestational Trophoblastic Neoplasia.

Objective: To evaluate the relationship between the 936C/T polymorphism of VEGF and the occurrence of gestational trophoblastic neoplasia (GTN).

Study design: A retro- spective study that included 8 patients with complete hydatidiform -mole (CHM) that evolved into spontane- ous remission (SR), 12 pa- tients with CHM that prog- ressed to GTN, and 20 control (C) patients without obstetric complications. Polymorphisms were detected by polymerase chain reaction-amplified technique of patients' DNA, and genotype frequencies were compared between the groups.

Results: . The genotype frequencies of the VEGF 936C/T polymorphism were as follows: SR group, 100% CC genotype; GTN group, 50.0% CC, 41.7% CT, and 8.3% TT; C group, 30.0% CC, 65.0% CT, and 5.0% TT. Genotype frequencies did not differ significantly be- tween the SR and GTN groups, although a trend was observed (p=0.06). Genotype frequencies did differ sig- nificantly between the combined group of all patients with CHM (SR+GTN) and the C group (p=0.03).

Conclusion: This study did not identify a different VEGF 936CT genotype profile for patients with CHM who undergo SR versus those who progress to GTN. However, the, results do suggest that this polymor- phism may affect susceptibil- ity to CHM. Larger groups may improve the results of assessments of the predictive parameters of GTN.