About This Research Study

The purpose of this research study is to determine if weekly injections of an investigational study drug reduce the rate of early delivery. This research will also determine if the study drug improves the health of the newborn baby.

The study drug will be compared to placebo, which is an injection that is like the study drug, but does not contain active study medication. Depending upon how long you have been pregnant when you enter this research study, participation may last for approximately 20 weeks.

There will be approximately 1700 women enrolled in the United States, Canada and several other countries. Your participation could contribute to reducing the number of preterm births.