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  • Title: Thrombin-activatable fibrinolysis inhibitor polymorphisms and recurrent pregnancy loss.
    Author: Masini S, Ticconi C, Gravina P, Tomassini M, Pietropolli A, Forte V, Federici G, Piccione E, Bernardini S.
    Journal: Fertil Steril; 2009 Aug; 92(2):694-702. PubMed ID: 18774564.
    Abstract:
    OBJECTIVE: To investigate the possible association between selected thrombin-activatable fibrinolysis inhibitor (TAFI) single nucleotide polymorphisms (SNPs) and recurrent pregnancy loss (RPL). DESIGN: Case-control study. SETTING: University hospital. PATIENT(S): One hundred fifty-eight women (86 cases and 72 controls). INTERVENTION(S): Determination of TAFI SNPs -438A/G, +505A/G, +1040T/C, +1542C/G, and +1583A/T by polymerase chain reaction (PCR) reactions and sequencing analysis performed on peripheral blood samples. MAIN OUTCOME MEASURE(S): Analysis of the genotype and allele frequencies of TAFI SNPs -438A/G, +505A/G, +1040T/C, +1542C/G, and +1583A/T in women with and without RPL. RESULT(S): Genotype and allele frequencies of TAFI +505 and +1583 SNPs were significantly different in women with RPL compared with control women. The frequencies of the +505A/A and +505G/G genotypes were 1.2% and 61.6% in women with RPL and 13.9% and 43.1% in control women, respectively. The frequencies of the +1583A/A and +1583T/T genotypes were 1.2% and 61.6% in women with RPL and 13.9% and 45.8% in control women, respectively. The genotype and allele frequencies at TAFI position -438, +1040, and +1542 were not significantly different between RPL and control women. CONCLUSION(S): The SNPs leading to increased TAFI levels are associated with a reduced risk of RPL. It is possible that TAFI is involved in RPL.
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