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Effectiveness of progesterone in reducing preterm births may be altered by genetic predisposition
Date:1/29/2009

re more or less likely to respond to 17P for the prevention of recurrent spontaneous preterm birth.

All patients had at least one prior spontaneous preterm birth. The study extracted DNA from the saliva of 389 patients, and then genotyped 20 SNPs in the region of the progesterone receptor gene. Two hundred and fifty-eight (66 percent) of the study participants received 17P and 131 (34 percent) were controls and received a placebo.

Spontaneous preterm birth was less common among women who received 17P. However, after controlling for factors known to be associated with recurrent prematurity, including smoking, number of prior preterm deliveries, and pre-pregnancy body mass index, two SNPs were identified among African-American patients to be predictive of response to progesterone treatment. There was also an interaction between progesterone treatment and genotype of 3 additional polymorphisms for non-African-American women delivering very preterm (less than 32 weeks gestation).

Today's award-winning study, The Relationship Between Polymorphisms in the Human Progesterone Receptor and Clinical Response to 17 Alpha-Hydroxyprogesterone Caproate for the Prevention of Recurrent Spontaneous Preterm Birth, is the sixth study by SMFM members to be honored by the March of Dimes for innovative research focused on preventing premature births. The March of Dimes is conducting a multi-year, multi-million dollar campaign aimed at using research and awareness to reduce the growing rate of premature birth.


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Contact: Elizabeth Lynch
elynch@marchofdimes.com
914-997-4286
March of Dimes Foundation
Source:Eurekalert

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