According to the march of dimes, one in four pregnancies end in miscarriage. It's a devastating blow for couples, but now there's hope.

There are new uses for an old drug that could give birth to more effective therapies.

The Paris family is expecting a little miracle - a baby brother or sister for four-year-old Kendall.

"They say 32 weeks, which was yesterday, yes, that they say even if the baby is born premature, the chances of survival is very high," said Laura Paris, mother.

And that's a very big deal. After giving birth to Kendall, Laura had three miscarriages in a row.

"After the third one, I was questionable as to why I kept having these miscarriages," she said.

Researchers at the University of Chicago say the problem may lie in Laura's immune system. Instead of protecting the fetus, it gets rid of it.

"A pregnancy is, in essence, slightly foreign to the mother and so the mother's immune response may make an inappropriate response to the pregnancy that will affect subsequent pregnancies," said OBGYN Mary Stephenson, M.D.

In a new study, doctors are testing a powerful drug - used for decades to treat immune disorders -to see if it can help prevent miscarriages.

Immunoglobulin, or IVIG for short, is a solution of antibodies designed to give the immune system a boost. So far, the results are encouraging.

Laura is taking part in the study. Now approaching her eighth month, she's cautiously optimistic.

"Every step closer you get feels just a tad bit better," she said.

Other factors must have been ruled out. Researchers are planning a much larger study and need volunteers.

Criteria for participating are very specific.

Study criteria