In vitro fertilization and risk of breast and gynecologic cancers: a retrospective cohort study within the Israeli Maccabi Healthcare Services

Among 87,403 infertile women, IVF was not significantly associated with breast or gynecologic cancers. Among women receiving four or more cycles, ovarian cancer was nonsignificantly elevated, supporting further risk monitoring.

Like Comment

Authors

Louise A. Brinton, Ph.D., Britton Trabert, Ph.D., Varda Shalev, M.D., Eitan Lunenfeld, M.D., M.H.A., Tal Sella, M.D., Gabriel Chodick, Ph.D.

Volume 99, Issue 5, Pages 1189-1196, April 2013

Abstract

Objective:

To assess long-term cancer risks associated with in vitro fertilization (IVF).

Design:

Record-linkage study.

Setting:

Health maintenance organization in Israel.

Patients:

A total of 87,403 women evaluated and/or treated for infertility on or after September 25, 1994 who developed cancer through June 22, 2011: 522 breast, 41 endometrial, 45 ovarian, 311 in situ cervical and 32 invasive cervical cancers were identified.

Intervention(s):

None.

Main Outcome Measures:

Hazard ratios (HRs) for specific cancers.

Results:

We found no significant relationships of IVF exposures to the risks of breast, endometrial or ovarian cancers. Compared to women with no fertility treatment, the HR associated with IVF was 1.58 (95% CI 0.75-3.29), with higher risk among those receiving 4+ cycles (1.78, 95% CI 0.76-4.13). There was also a non-significantly elevated risk for endometrial cancer among women who received 1-3 IVF cycles (1.94, 0.73-5.12), but additional cycles were associated with lesser risk. In contrast, in situ cervical cancer was significantly reduced and invasive cervical cancer non-significantly reduced among women receiving IVF as well as other fertility treatments.

Conclusions:

Our results regarding long-term effects were largely reassuring, but women receiving IVF should continue to be monitored given that the procedures involves potent ovulation stimulators and repeated ovarian punctures.

Read the full text at: http://www.fertstert.org/article/S0015-0282(12)02538-1/fulltext


Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders. The journal publishes juried original scientific articles in clinical and laboratory research relevant to reproductive endocrinology, urology, andrology, physiology, immunology, genetics, contraception, and menopause. Fertility and Sterility® encourages and supports meaningful basic and clinical research, and facilitates and promotes excellence in professional education, in the field of reproductive medicine.

No comments yet.