Anti-Muellerian hormone predicts IVF success

February 12, 2013

Chevy Chase, MD --Women with a high concentration of anti-Müllerian hormone stand a better chance of giving birth after in vitro fertilization, according to a recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

Anti-Müllerian hormone (AMH) is produced by the ovaries. The study found women with high AMH levels were 2.5 times more likely to have a successful IVF cycle than women of a similar age with low levels of the hormone. AMH levels were a predictor of pregnancy and live birth, even when the mother's age and egg production were taken into account.

Although a growing body of research has pinpointed AMH levels as an indicator of the number of eggs remaining in a woman's ovaries, this study is the first to demonstrate AMH levels are directly connected to birth and pregnancy rates, regardless of the number of eggs retrieved.

"For women who are struggling to get pregnant, a high AMH level should be very reassuring," said Thomas Brodin, MD, of Uppsala University in Sweden and lead author of the study. "High levels of this hormone mean there is a greater chance they have plenty of healthy eggs remaining to support a pregnancy."

Researchers concluded high AMH levels are associated with successful IVF treatment because the hormone levels reveal important information about the quality as well as the quantity of eggs left in a woman's ovaries. Women who have high AMH levels are likely to have a high proportion of eggs capable of developing into healthy embryos, Brodin said.

The prospective cohort study tracked 892 women who underwent IVF treatment at the Carl von Linné Clinic in Uppsala between 2008 and 2011. The participants underwent a total of 1,230 IVF cycles. AMH levels in the participants' blood were measured prior to treatment.

The study found that women were more likely to have a successful treatment outcome as their AMH levels increased. Women who had AMH levels above 2.94 ng/ml had the highest birth rates. The effect leveled out when AMH levels surpassed 5 ng/ml.

Although researchers did not find a cut-off point below which women could not get pregnant, IVF success rates dropped substantially as AMH levels declined. Among the study participants who had AMH levels below 0.2 ng/ml, 53 IVF cycles resulted in only 18 embryo transfers and the birth of three children.

The study found reason for optimism among women who have polycystic ovary syndrome, a condition normally associated with ovulation problems. Women who have this condition tend to have high AMH levels.

"Our data suggests women who have polycystic ovaries are likely to be good candidates for IVF," Brodin said. "Along with high AMH levels, this group tends to have a significant supply of eggs remaining in the ovaries."
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Other researchers working on the study include: N. Hadziosmanovic and L. Berglund of Uppsala Clinical Research Center, and M. Olovsson and J. Holte of Uppsala University.

The article, "Anti-Müllerian Hormone Levels Are Strongly Associated with Live-birth Rates after Assisted Reproduction," appears in the March 2013 issue of JCEM.

The Endocrine Society

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