Breast Cancer and Your Fertility

What is the lastest science on breast cancer and fertility? Are women able to become moms after breast cancer? Are there steps you can take to maintain your fertility after breast cancer? We explain the facts here. 

Be proactive
One survey suggests that half of all reproductive-aged women with invasive breast cancer desire to give birth after cancer treatment ends, and 1 in 10 will do so. It is important to know your fertility options after breast cancer. Your fertility following breast cancer treatment depends largely on the type of cancer you have and the type of treatment you receive.

If you are hoping to have children following breast cancer treatment, discuss your concerns with your cancer doctor (oncologist). He or she may be able to adjust your breast cancer treatment regimen to protect your fertility. You also need to see a fertility specialist (reproductive endocrinologist) right away to learn about your fertility preservation options. Specialists in our fertility network are available to help you.

Fertility preservation
Women with breast cancer have several fertility options:

  • Controlled ovarian stimulation combined with the freezing of mature eggs or embryos
  • Freezing of immature eggs
  • Freezing of ovarian tissue
  • In vitro maturation before freezing mature eggs
  • Use of GnRH-analogs

Sound confusing? A fertility specialist can decode this list for you, and let you know if any of these procedures are right for you. 

Find a fertility clinic near you

Fertility challenges
According to ASRM, women with breast cancer face particular challenges when it comes to fertility preservation.  Many women with breast cancer have a type that is considered to be ‘hormone-sensitive’, meaning that it may grow in response to hormones such as estrogen and progesterone.  Since most protocols for ovarian stimulation for egg or embryo freezing result in higher than normal estrogen levels, this can be a challenge for women with certain types of breast cancer. That being said, this risk is hypothetical – there is no data to suggest that ovarian stimulation is dangerous for women with breast cancer.

Fertility specialists try to be cautious in these scenarios – many use a special protocol for ovarian stimulation that does not cause estrogen levels to be very high. Still, if ovarian stimulation is risky for a particular patient, other family building alternatives may be possible.

Alternatives to embryo freezing
If you don't qualify for embryo freezing with IVF, ask your fertility specialist about other therapies. GnRH-agonists (such as Leuprolide Acetate, or Lupron) might be helpful. Dr. Jennifer Mersereau, Medical Director at the University of North Carolina Division of Reproductive Endocrinology and Infertility, tells Attain Fertility, "Some studies on GnRH-agonists show some benefit in ovarian function in women with breast cancer, although studies have only followed patients for 1 year after chemotherapy. Unfortunately, other studies on GnRH-agonists have shown mixed results. Some show benefit, some show no difference, although none show harm."

Ask your doctor if GnRH-agonists, or other therapies, might help protect your fertility during breast cancer treatment.

Pursuing parenthood
If you have breast cancer, and are interested in becoming a mother, take action to protect your fertility before cancer treatment begins. Ask a fertility specialist about your choices. Many women become parents via adoption, in vitro fertilization (IVF) with donor eggs, or gestational carrier arrangements. These family building options may be available for you if you are unable to become pregnant on your own after cancer treatment ends.

Medically reviewed September 2011 by Dr. Jennifer Mersereau, Medical Director at the University of North Carolina (UNC) Division of Reproductive Endocrinology and Infertility.