Nav: Home

Female cancer survivors are one-third less likely to achieve pregnancy than women in general populat

July 03, 2017

Geneva, 3 July 2017: For the first time, a large population study has quantified the chance of pregnancy after treatment for cancer diagnosed in girls and women aged 39 or under. This landmark study, which linked all cancers diagnosed in Scotland between 1981 and 2012 to subsequent pregnancy, found that the cancer survivors were 38% less likely to achieve a pregnancy than women in the general population. This detrimental effect on fertility was evident in almost all types of cancer diagnosed.

"This analysis provides the first robust, population-based evidence of the effect of cancer and its treatment on subsequent pregnancy across the full reproductive age range," said presenter Professor Richard Anderson from the MRC Centre for Reproductive Health, Queen's Medical Research Institute at the University of Edinburgh, UK. "The major impact on pregnancy after some common cancers highlights the need for enhanced strategies to preserve fertility in girls and young women."

Professor Anderson will present the results of the study today at the Annual Meeting of ESHRE in Geneva.

The need for better access to fertility preservation has become more pressing in recent years for two reasons: first, the improved rates of survival in young women and girls diagnosed with cancer; and second, improvements in the techniques of freezing eggs and ovarian tissue to restore fertility.

This latest study, which cross-linked 23,201 female cancer survivors from the Scottish Cancer Registry with hospital discharge records, revealed 6627 pregnancies among the cancer survivors when nearly 11,000 would have been expected in a comparable matched control group from the general population.

For women who had not been pregnant before their cancer diagnosis, 20.6% of the cancer survivors achieved a first pregnancy after diagnosis (2114 first pregnancies in 10,271 women), compared with 38.7% in the control group. Thus, women with cancer were about half as likely to achieve a first pregnancy after diagnosis as were controls.

The analysis also found that the chance of pregnancy was reduced in all age groups, with substantial variations between different cancer diagnoses - notably, reduced pregnancy rates in women with cervical cancer, breast cancer and leukaemia. However, those cancers diagnosed later within the study period (2005-2012) were associated with higher rates of pregnancy than those diagnosed earlier (1981-1988), suggesting that for some cancer treatments the impact on fertility has reduced.

The diagnosis and treatment of female cancers are known to affect fertility for several reasons: some chemotherapy regimens can cause damage to the ovary, and this can occur at any age; radiotherapy can also compromise female fertility through effects on the ovary, uterus and potentially those brain centres which control the reproductive axis.

However, Professor Anderson stressed that the results of the study related only to subsequent pregnancy itself, and not to the incidence of infertility caused by cancer treatment. "Some women may have chosen not to have a pregnancy," he explained. "Thus, while these results do show an expected reduction in the chance of pregnancy after chemotherapy and radiotherapy, having a pregnancy after cancer does involve a range of complex issues that we cannot address in this study."

With rates of cancer survival increasing in both young male and females, fertility preservation ahead of treatment has an increasing role to play in fertility clinics. However, Professor Anderson described such services in all parts of the world, including the USA and Europe, as "very variable". "Oocyte and embryo freezing are regarded as established," he said, "but ovarian tissue cryopreservation is considered experimental, although it is the only option for prepubertal girls."

He added that the results of this study would allow clinicians to advise girls and women more accurately about their future chance of pregnancy. "They emphasise the need to consider the possible effects on fertility in girls and women with a new cancer diagnosis. The implications of the diagnosis and planned treatment and, where appropriate, options for fertility preservation should be discussed with the patient and her family. Even for patients considered at low risk of infertility as a result of treatment, a fertility discussion is recommended before treatment begins."
-end-
Abstract O-082, Monday 3 July 2017
Pregnancy after cancer in girls and women in Scotland: a population-based analysis

Female fertility preservation: the story so far

1. All treatments for cancer in women have some impact on fertility, but quantifying its extent has largely depended on surrogate markers such as ovarian function (menstrual cycles, premature ovarian insufficiency). The best large-scale evidence has come from the US Childhood Cancer Survivor Study, which only includes women up to the age of 21 at diagnosis.

2. There are two commonly used techniques of fertility preservation in females: ovarian tissue cryopreservation, in which frozen-thawed strips of tissue are transplanted for either natural or assisted conception, and egg freezing. The latter needs several eggs to be collected following ovarian stimulation, and thus requires some time for the procedure to be completed, which is not possible in urgent cases.

* When obtaining outside comment, journalists are requested to ensure that their contacts are aware of the embargo on this release.

For further information on the details of this press release, contact:
Christine Bauquis at ESHRE
Mobile: +32 (0)499 25 80 46
Email: christine@eshre.eu

European Society of Human Reproduction and Embryology

Related Cancer Articles:

UCI researchers uncover cancer cell vulnerabilities; may lead to better cancer therapies
A new University of California, Irvine-led study reveals a protein responsible for genetic changes resulting in a variety of cancers, may also be the key to more effective, targeted cancer therapy.
Breast cancer treatment costs highest among young women with metastic cancer
In a fight for their lives, young women, age 18-44, spend double the amount of older women to survive metastatic breast cancer, according to a large statewide study by the University of North Carolina at Chapel Hill.
Cancer mortality continues steady decline, driven by progress against lung cancer
The cancer death rate declined by 29% from 1991 to 2017, including a 2.2% drop from 2016 to 2017, the largest single-year drop in cancer mortality ever reported.
Stress in cervical cancer patients associated with higher risk of cancer-specific mortality
Psychological stress was associated with a higher risk of cancer-specific mortality in women diagnosed with cervical cancer.
Cancer-sniffing dogs 97% accurate in identifying lung cancer, according to study in JAOA
The next step will be to further fractionate the samples based on chemical and physical properties, presenting them back to the dogs until the specific biomarkers for each cancer are identified.
Moffitt Cancer Center researchers identify one way T cell function may fail in cancer
Moffitt Cancer Center researchers have discovered a mechanism by which one type of immune cell, CD8+ T cells, can become dysfunctional, impeding its ability to seek and kill cancer cells.
More cancer survivors, fewer cancer specialists point to challenge in meeting care needs
An aging population, a growing number of cancer survivors, and a projected shortage of cancer care providers will result in a challenge in delivering the care for cancer survivors in the United States if systemic changes are not made.
New cancer vaccine platform a potential tool for efficacious targeted cancer therapy
Researchers at the University of Helsinki have discovered a solution in the form of a cancer vaccine platform for improving the efficacy of oncolytic viruses used in cancer treatment.
American Cancer Society outlines blueprint for cancer control in the 21st century
The American Cancer Society is outlining its vision for cancer control in the decades ahead in a series of articles that forms the basis of a national cancer control plan.
Oncotarget: Cancer pioneer employs physics to approach cancer in last research article
In the cover article of Tuesday's issue of Oncotarget, James Frost, MD, PhD, Kenneth Pienta, MD, and the late Donald Coffey, Ph.D., use a theory of physical and biophysical symmetry to derive a new conceptualization of cancer.
More Cancer News and Cancer Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Listen Again: The Power Of Spaces
How do spaces shape the human experience? In what ways do our rooms, homes, and buildings give us meaning and purpose? This hour, TED speakers explore the power of the spaces we make and inhabit. Guests include architect Michael Murphy, musician David Byrne, artist Es Devlin, and architect Siamak Hariri.
Now Playing: Science for the People

#576 Science Communication in Creative Places
When you think of science communication, you might think of TED talks or museum talks or video talks, or... people giving lectures. It's a lot of people talking. But there's more to sci comm than that. This week host Bethany Brookshire talks to three people who have looked at science communication in places you might not expect it. We'll speak with Mauna Dasari, a graduate student at Notre Dame, about making mammals into a March Madness match. We'll talk with Sarah Garner, director of the Pathologists Assistant Program at Tulane University School of Medicine, who takes pathology instruction out of...
Now Playing: Radiolab

What If?
There's plenty of speculation about what Donald Trump might do in the wake of the election. Would he dispute the results if he loses? Would he simply refuse to leave office, or even try to use the military to maintain control? Last summer, Rosa Brooks got together a team of experts and political operatives from both sides of the aisle to ask a slightly different question. Rather than arguing about whether he'd do those things, they dug into what exactly would happen if he did. Part war game part choose your own adventure, Rosa's Transition Integrity Project doesn't give us any predictions, and it isn't a referendum on Trump. Instead, it's a deeply illuminating stress test on our laws, our institutions, and on the commitment to democracy written into the constitution. This episode was reported by Bethel Habte, with help from Tracie Hunte, and produced by Bethel Habte. Jeremy Bloom provided original music. Support Radiolab by becoming a member today at Radiolab.org/donate.     You can read The Transition Integrity Project's report here.