Fertility Preservation for Pediatric and Adolescent Patients With Cancer: Medical and Ethical Considerations

Risk of Infertility in the Male Patient After Cancer Treatment

Male fertility can be affected by impairment of spermatogenesis as a result of gonadotoxic chemotherapy, gonadotropin deficiency from central nervous system–directed therapy, or functional abnormalities of genitourinary organs caused by spinal or pelvic surgery and/or radiotherapy. Deleterious effects on testicular function have been observed with alkylating agents, such as cyclophosphamide, as evidenced by increased follicle-stimulating and luteinizing hormone concentrations, indicating decreasing gonadal function.^34–36

In a large cohort study, the St Jude Lifetime Cohort Study, testicular function was evaluated by using a semen analysis. The investigators performed a semen analysis on 214 adult male survivors of childhood cancer, all of whom had received alkylating agents without radiotherapy. Azoospermia was noted in 25%, oligospermia was noted in 28%, and normospermia was noted in 48%. Importantly, there was no identified threshold dose below which azoospermia did not occur or one above which azoospermia was uniformly present.³⁷

Several large studies, including the Childhood Cancer Survivor Study (CCSS),^38,39 have evaluated the fertility outcome of survivors of childhood cancer. The most recent cohort study included almost 11 000 survivors not exposed to gonadal or cranial radiotherapy and more than 3900 sibling controls. On the basis of self-reported data, it was found that male survivors had a decreased likelihood of fathering a pregnancy compared with a sibling control group.⁴⁰ This finding confirmed results from an earlier CCSS study showing that among male patients, risk factors for impaired fertility included increasing alkylating-agent exposures and higher testicular radiation doses (Tables 1 and 2). These studies are important in counseling because although increasing chemotherapy and radiation doses are associated with a higher chance of infertility, there is no dose so low as to guarantee the maintenance of fertility and no dose so high that infertility is certain to occur.

Risk of Infertility in the Female Patient After Cancer Treatment

Chemotherapy and tradiotherapy can destroy ovarian follicles and predispose female patients to diminished ovarian reserve and premature ovarian failure. Premature ovarian failure is defined as premature menopause occurring before age 40. This differs from diminished ovarian reserve, which can lead to increased difficulty in achieving a pregnancy or to a shortened reproductive window despite regular menstrual periods. The deleterious effects of chemotherapy are dependent on the age of the patient at the time of therapy, the specific agents used, and cumulative dosing.⁴¹ Oocytes do not regenerate after birth, as opposed to spermatogenesis, which continues to occur from progenitor stem cells throughout a man’s life. Premature ovarian failure is rare in survivors of childhood cancer and was found to have an incidence of 6% to 9% in CCSS cohorts.⁴² Many women who do not have overt ovarian failure will have diminished ovarian reserve.⁴³ Several studies have used anti-Müllerian hormone (AMH) concentrations to estimate ovarian reserve.^44,45 Survivors of childhood cancer often have lower AMH concentrations compared with a control group.^46,47 Low AMH concentrations can predispose to diminished ovarian reserve and, therefore, a higher risk of infertility as well as earlier menopause. When evaluated by treatment exposure (alkylators only, alkylators and subdiaphragmatic radiation, or high-dose alkylating therapy), all survivor groups had diminished ovarian surface area and AMH concentrations. Ovarian reserve was worse when survivors received a high dose versus a conventional dose of alkylating therapy.

Radiation has an effect on both the brain and the end organs. When the brain is the target of irradiation, infertility can present as hypothalamic amenorrhea. High-dose cranial radiotherapy (35–40 Gy) can cause infertility via hypogonadism through its effects on the hypothalamic-pituitary axis. Such infertility can be treated medically with stimulation of the ovaries or testes with gonadotropins to induce the maturation and release of gametes. Radiation can affect the uterus and vagina, and women undergoing radiation to the uterus are less likely to both conceive a pregnancy and carry it to term.⁴⁸ Direct pelvic radiotherapy, abdominal or spinal radiation, or scatter radiation can all affect the ovaries. The oocyte median lethal dose for radiotherapy is less than 2 Gy.⁴⁹

Several studies have been focused on infertility and achievement of pregnancy in female survivors of cancer. One CCSS cohort study found that the risk of nonsurgical premature menopause was increased for survivors of childhood cancer.⁴² Survivors also had an increased risk of clinical infertility when compared with sibling controls. This risk was most pronounced in the early reproductive years (≤24 years), when fertility is high in a general population. Increasing doses of uterine radiation and alkylators were most strongly associated with infertility. Promisingly, almost two-thirds of survivors with clinical infertility reported a pregnancy during the study period, which included both those achieving pregnancy spontaneously and those who underwent fertility treatment.⁵⁰ Another CCSS cohort study analyzed only survivors who had not received gonadal or cranial radiotherapy to evaluate the effect of chemotherapeutic agents on pregnancy. Just as with male survivors, female survivors had a decreased likelihood of pregnancy and live birth compared with sibling controls. If a pregnancy was not achieved by age 30, the likelihood of ever becoming pregnant by age 45 was further reduced compared with siblings. As with previous studies, the most deleterious chemotherapeutic agents were the alkylating agents, including lomustine and cyclophosphamide.⁴⁰

Boys

Before puberty, methods available for gonadal and gamete preservation in the male patient are primarily theoretical at the present time, with the exception of shielding the testes or moving them out of the radiation field.^52,53 Most methods involve hormonal and other manipulations to protect the testes from injury during cancer treatment or involve preserving a testicular tissue sample. Primordial sperm cells are susceptible to toxicity at all stages of life. Gonad shielding can be used during radiotherapy but is only possible with selected radiation fields and anatomy and may increase the risk of harboring malignant cells.³ The gonad(s) can also be temporarily relocated outside of the radiation field to either the thigh or the anterior abdominal wall.^54,55

To date, no effective pharmacologic intervention has been identified. Gonadal protection through hormone manipulation has been evaluated only in small studies in patients with cancer and is uniformly ineffective in either preserving fertility or speeding the recovery of spermatogenesis.³ Animal studies suggest that testicular tissue cryopreservation, autotransplantation, xenotransplantation, and in vitro maturation may be successful methods of fertility preservation, but most have yet to be tested in humans.⁵⁶ Human spermatocytes have been matured in vitro to mature spermatids, resulting in at least 1 pregnancy.⁵⁷ Testicular tissue cryopreservation has been reported, and ongoing clinical trials are being conducted to address prepubertal fertility preservation in boys.^58,59 Oncologists can help their male patients and their families by sharing with them information and options regarding clinical trials to address prepubertal fertility preservation. Once testicular tissue has been cryopreserved, future options for its use may include in vitro maturation or germ cell transplant, which at this time are theoretical in nature.

Girls

Similar to prepubertal boys, most fertility preservation modalities in prepubertal girls are experimental in nature and are without adequate long-term outcomes data. The exception is gonadal shielding and oophoropexy. Shielding of the ovaries during radiotherapy and oophoropexy to remove the ovaries from the radiation field are strategies to preserve ovarian function during treatment, although radiation scatter is a concern despite best efforts to avoid radiation exposure.^60–62 Although ovarian transposition is relatively effective for preserving the endocrine function of the ovary (in 60% of cases), only approximately 15% of patients treated with transposition and wishing to become pregnant ever achieve this goal.⁶⁰ Of note, the benefit of gonadal shielding is less effective if adjuvant chemotherapy with gonadotoxic agents is required as part of the treatment regimen.

There are also potential means for preserving ovarian function in selected cases of reproductive tract malignancy, including more conservative surgery for certain early-stage tumors and choosing chemotherapeutic agents that have less gonadal toxicity.^60,63,64

In prepubescent girls, the ovaries cannot be stimulated to produce mature eggs. Ovarian tissue cryopreservation has been proposed as a method to preserve fertility in this cohort of girls. In contrast to oocyte cryopreservation, ovarian tissue cryopreservation (via removal of a portion of the ovary or unilateral oophorectomy) is a process in which normal, functioning ovarian tissue is excised from the ovary and cryogenically stored.^65–70 Currently, this technique is only available in certain parts of the United States as an open clinical trial to assess its efficacy and safety as a potential option for preservation of fertility in prepubertal girls.^71,72 Within this context, it is the only method that can be offered to prepubertal girls.⁷³ This technique has been performed in children as young as 2.7 years of age, and the chance of later restoring fertility should theoretically be higher because the ovarian cortex contains more primordial and primary follicles in younger children.⁷³ Ideally, the stored ovarian tissue is thawed and autotransplanted into the donor once her treatment has been completed.⁷⁴ There are no data yet available regarding whether cryopreservation of ovarian tissue in prepubertal girls can lead to pregnancy and delivery. Given the potentially limited viability of the autotransplanted tissue, this procedure is more likely to restore reproductive endocrine function rather than result in preserving fertility, unless the oocytes are retrieved relatively soon after the transplant. Studies using flow cytometric evaluation have confirmed the presence of contaminating leukemia cells in histologically normal pretreatment ovarian tissue specimens removed from patients with leukemia and lymphoma before initiation of treatment, leading to the theoretical concern for reseeding the body with tumor cells after the autotransplant.^75,76 In adults, more than 70 live births have been reported in women who cryopreserved ovarian tissue, but only when the tissue was harvested postpubertally.^77–82 A potential confounder in the various case series in which live births were reported is that in the majority of cases, some native ovarian tissue was present in addition to the autotransplanted ovarian tissue. It is possible that pregnancies occurred from oocytes obtained from the native ovarian tissue and not from the transplanted material.⁸³

Until recently, all of the reports of successful births after autografts of cryopreserved ovarian tissue in the pediatric population were obtained from adolescents who had already begun the pubertal transition. There has now been at least 1 published report of a live birth after an autograft of cryopreserved ovarian tissue in a prepubertal girl, who was 9 years old at the time that her ovarian tissue was cryopreserved.⁸⁴ Before this, the youngest age at the time of ovarian tissue cryopreservation was 14 years, in a girl preparing to undergo a myeloablative conditioning regimen as part of a hematopoietic stem cell transplant performed for homozygous sickle cell anemia. Although she had not yet achieved menarche, there was evidence that she had already started the pubertal transition on the basis of existence of breast development.⁸⁵ Given the unknown efficacy of this technique, ovarian tissue cryopreservation in prepubertal girls is best performed under an IRB protocol.

Male Adolescents

Sperm cryopreservation after masturbation is the most established and effective method of fertility preservation in male adolescents.⁷¹ Whenever possible, sperm should be collected before initiation of cancer therapy to prevent the risk that sperm DNA integrity or sample quality will be compromised. Sperm can be collected at infertility centers or andrology laboratories and stored either at these sites or at long-term storage facilities. Patients may be shy or embarrassed at the prospect of masturbation, such that a discussion of the available options is best conducted with the patient and his legal guardian(s) in a comfortable and accepting manner. It may be helpful to provide a space for the patient to speak privately with a medical team member in the absence of the parent or guardian to allow the adolescent to ask questions and address concerns. Physicians may be instrumental in guiding parents regarding approaches to effectively discuss sperm cryopreservation with their adolescent sons.⁸⁶ One study suggested that adolescent boys may be more successful at masturbation if a parent does not accompany them to the appointment.⁸⁷ Underlying sperm quality may be poor in certain cancer types, including testicular cancer, leukemia, and Hodgkin’s disease.^88,89 Nevertheless, recent progress in andrology laboratories and with assisted reproductive technology (ART) allows for successful freezing and future use of even a limited number of sperm and even when the sperm quality is diminished.⁹⁰

Alternative methods of obtaining sperm besides masturbation include testicular aspiration or extraction, electroejaculation under sedation or anesthesia,⁹¹ or retrieval from a postmasturbation urine sample.⁸⁷ Although fresh sperm samples may result in higher success rates than frozen sperm, the success rate depends more on the sperm parameters at the time of production than on whether the sample was used fresh or was previously cryopreserved.^92,93 With fair-quality frozen sperm samples, IVF is often recommended to achieve pregnancy rather than intrauterine insemination because cycle success rates are much higher and sperm are a limited resource. In cases in which only a few sperm are present, fertilization and pregnancy can be achieved by performing IVF with intracytoplasmic sperm injection (ICSI).

Female Adolescents

Although postpubertal female adolescents historically had few available options, this has changed over the past decade with improvements in oocyte cryopreservation. Oocyte cryopreservation remains generally more invasive and expensive than sperm harvesting. In October 2012, the American Society for Reproductive Medicine released a statement describing oocyte cryopreservation as no longer experimental and recommending that it be offered to adult patients facing the risk of infertility resulting from chemotherapy and other gonadotoxic therapies.⁹⁴ Embryology laboratories are increasingly able to cryopreserve, thaw, and fertilize mature oocytes, with success rates approaching or equaling those achieved with more traditional embryo freezing.⁹⁴ This opens up a viable option for the postmenarcheal pediatric patient with cancer.^95,96 Successful pregnancy rates by using previously cryopreserved oocytes have been reported to be as high as 50% in adult women cryopreserving their oocytes but would be expected to be even better in young women and adolescents.⁹⁷ Such rates have been obtained at fertility centers that are experienced with egg freezing, and patients should be encouraged to freeze oocytes at centers with ample experience using this technology. The number of infants born from frozen oocytes is increasing. Information on the health outcomes of children born via this specific technique for fertility preservation is limited but has overall been reassuring. No increases in chromosomal abnormalities, birth defects, or developmental deficits have been noted in the children born from cryopreserved oocytes as compared with other standard ART procedures, such as IVF, and with natural conception^98–101; however, these data are not from patients who cryopreserved their oocytes after a cancer diagnosis. To date, it is not known whether success rates in this situation will mirror those achieved after oocyte cryopreservation for other indications. Nevertheless, given the reassuring outcomes data for egg freezing in other contexts and the lack of other options for many women facing gonadotoxic therapies, the American Society for Reproductive Medicine and the American College of Obstetricians and Gynecologists support the use of oocyte cryopreservation for women at risk for losing ovarian reserve because of gonadotoxic exposures.¹⁰² This technique requires controlled ovarian hyperstimulation with approximately 10 days of subcutaneous gonadotropin hormone injections. Eggs are then retrieved from the ovaries with transvaginal ultrasonography-guided needle aspiration performed under intravenous sedation. As mentioned previously, although medically viable, this technique has limitations in the adolescent age group because of the invasive nature of the process. Although oocyte cryopreservation is a medically viable option beginning around the time of menarche, it is less clear whether it should be routinely offered to young adolescents or to any minor. The process of oocyte cryopreservation requires approximately 10 days of monitoring with transvaginal ultrasonography and blood tests, followed by a transvaginal oocyte retrieval performed under anesthesia. In some clinical situations, a delay of a week or more before initiating cancer treatment may not be possible or may compromise care such that oocyte cryopreservation may not be a viable option. For many adolescents and their parents or guardians, the invasive nature of the ovarian stimulation process and retrieval may prevent its acceptance on psychological and emotional grounds.

Women with hormonally sensitive tumors who are interested in oocyte or embryo cryopreservation present specific challenges because standard protocols for ovarian stimulation are associated with significant (albeit temporary) elevations in estradiol concentrations. Such elevations may theoretically increase the risk of tumor progression and spread.¹⁰³ There has been a growing experience with the use of selective estrogen receptor modulators and aromatase inhibitors during the stimulation portion of the cycle. Use of these agents has been shown to significantly reduce peak estradiol levels during ovarian stimulation to those more typical of a spontaneous ovulation during a normal menstrual period, thus theoretically decreasing the risk of stimulating hormonally sensitive tumors. Fortunately, this blunting of the hormones does not have a negative effect on egg quality or cycle outcome. The lower estradiol concentrations in cycles using selective estrogen receptor modulators and aromatase inhibitors do not appear to decrease the chance of achieving a pregnancy when the resultant embryos are ultimately transferred to the uterus.^104,105

Cryopreservation of embryos, in which oocytes are fertilized with sperm from the woman’s male partner or with anonymous donor sperm, was historically the only option available to postpubertal girls and young women wishing to preserve their fertility. As compared with oocyte cryopreservation, embryo cryopreservation is more socially, emotionally, and ethically complex because the patient needs the maturity to fully comprehend all aspects of the procedure, including the fact that the eggs will be fertilized with (usually anonymous) donor sperm.⁶⁷ Given the success rate with oocyte cryopreservation, there is little need to consider fertilizing the eggs before cryopreserving them, and embryo cryopreservation should only be used in rare circumstances, for example, when an older adolescent is married or in a long-term committed relationship. Even then, cryopreserving oocytes opens up more future options than cryopreserving embryos and should be encouraged when available and when the patient is of an appropriate age and maturity level to undergo an ovarian stimulation procedure.

For women who have previously undergone pelvic irradiation, there may be scarring or other postradiation effects to the uterus and vagina that preclude conception or the ability to maintain a pregnancy. For girls who will be receiving pelvic irradiation and their families, discussion of the future use of a gestational surrogate may be warranted. If the ovaries remain functional after irradiation, it will be possible to retrieve eggs from them, fertilize them through IVF, and transfer them into a gestational carrier. When premature ovarian failure has occurred, women with uterine or vaginal compromise who wish to consider parenting options outside of adoption will require both donation from a known or anonymous egg donor and the services of a gestational carrier. There are significant costs associated with this mode of reproduction. Also, gestational surrogacy laws are complex, differ among states, and evolve over time.

There has been speculation that concomitant treatment with gonadotropin-releasing hormone (GnRH) analogs may prevent ovarian failure induced by cancer therapy by protecting against chemotherapy-induced follicle depletion. The studies looking at this option to date were performed on adult women with breast cancer, and it is not clear whether these data are applicable to children. In adults, most studies evaluating GnRH analogs to prevent ovarian failure have not demonstrated benefits,^106–108 although 1 recent randomized trial revealed a significant reduction in ovarian failure and an increased fertility rate in women receiving GnRH analogs.¹⁰⁹ These findings cannot be applied to prepubertal girls, in whom the hypothalamic-pituitary-ovarian axis is still quiescent.⁷¹ The 2018 ASCO guidelines acknowledge that there is conflicting evidence regarding the use of GnRH analogs to protect fertility but suggest that in situations in which proven fertility preservation methods are not feasible, GnRH analogs may be offered to patients, with the hope of reducing chemotherapy-induced ovarian insufficiency.³

Counseling Families Regarding Options for Fertility Preservation

Counseling regarding fertility preservation options is the first step in assisting families in navigating options for fertility preservation. This counseling is best undertaken as early as feasible after a cancer diagnosis is made and before the initiation of any cancer treatment, if possible. For preadolescents, it is appropriate for one or both parents or guardians to be present for such conversations. Adolescents may benefit from the opportunity to speak one on one with their physician and/or child psychologist or reproductive specialty surgeon in the absence of their parents. For adolescent girls who may benefit from oocyte cryopreservation, a frank discussion regarding their experience with tampon use and intercourse should be undertaken because the monitoring that is required before retrieving the oocytes requires multiple transvaginal ultrasonographic examinations. For adolescent boys, a discussion of sexual experience and comfort with masturbation should occur. Recognizing that fertility preservation may create both burdens and opportunities for patients and their families, discussions regarding reproductive potential have, as their goal, the maximization of the child’s future options and well-being.

Most often, a child will initially present to the general pediatrician and then be referred to a pediatric hematologist oncologist. Physicians involved in cancer treatment should be familiar with the ASCO guidelines for fertility preservation³ and be able to provide referral for consultation and treatment to patients and families who wish to seek these out. When possible, a child should be referred to a multidisciplinary team for a comprehensive approach to the evaluation of options for fertility preservation for his or her specific circumstances. This team can provide counseling regarding appropriate treatments, their timing, and their scope. The team may consist of the patient’s primary care physician, pediatric hematologist and oncologist, radiation oncologist, reproductive endocrinologist, urologist specializing in male infertility, surgeon (if surgery is part of the treatment), child-life or other integrative health specialist, and mental health professionals. Ethics consultants may be helpful when conflicts arise between medical professionals and the patient and family.¹²⁴ Such a team approach allows families to obtain the information they require to make decisions regarding fertility preservation and allows those who decide to pursue fertility preservation options to do so in an efficient manner and maximizes the chance that fertility preservation options are initiated before starting cancer therapy. For prepubertal children, consultation with and/or referral to a center performing testicular and ovarian cryopreservation under an IRB protocol is appropriate. The type, stage, and severity of the cancer affect the time frame during which decisions surrounding fertility preservation must be made. In some cases, these decisions must be made emergently, whereas in other cases, the window for action is urgent but not emergent. In some circumstances, lifesaving treatment will need to start immediately and fertility preservation options will not be available. Even when fertility preservation is not possible because of the need for treatment or other determinants, counseling regarding the risks to fertility inherent in the various treatment options will allow patients and their families to cope with the effects of cancer treatment.

Counseling Regarding Expected Outcomes After Fertility Preservation

Physicians have an important role in counseling children and their caregivers regarding their future reproductive options when faced with a cancer diagnosis. The option of fertility preservation may be of great comfort for patients and their families and may assist them in managing the emotional trauma of the cancer diagnosis,⁶⁰ although the offer may also result in unrealistic expectations.¹²⁵ Most younger patients with cancer have historically been left with significant anxieties and insufficient information about reproductive issues.¹²⁶ Appropriate counseling of parents and patients (as appropriate for age) in developmentally appropriate language will help patients and their families understand the likelihood that cancer treatment will permanently affect fertility. Reproductive endocrinologists and urologists can be instrumental in explaining the pre- and posttreatment options and may help alleviate these anxieties.³ The downstream options of adoption, egg and sperm donation, and gestational surrogacy can be discussed as well as the success rates, costs, surgical risks, and experimental nature of specific ART options and the acceptability of the option to decline the intervention.^125,127 As part of this discussion, families and children (as appropriate for age) should be made aware that cancer treatments do not guarantee a loss of reproductive potential and that pregnancy can occur in sexually active postpubertal adolescents and young adults. The complexity and impact of the various fertility preservation options may be overwhelming to children and their families. Whenever possible, the information should be conveyed incrementally over multiple visits. This will allow families the time to internalize the various treatment options and determine the optimal course of action for their particular situation. However, some clinical diagnoses do not allow for the luxury of time between identification of the cancer and implementation of treatment, and fertility preservation decisions must be made urgently.

Dispositional Control of Cryopreserved Reproductive Tissue

The fertility specialist can play an important role in discussing the issue of dispositional control of reproductive tissue in the event of the patient’s death or incapacity. Such discussions best occur before the collection of any reproductive tissue. Posthumous use of reproductive tissue is defined as the use of gametes or embryos in an attempt to create offspring after the death of the individual who provided the reproductive tissue. Posthumous reproduction from gametes procured in childhood should not occur if the child does not survive beyond the age of majority. This is further discussed below in the section on ethics. Consent forms should designate that the disposition of reproductive tissue will be delayed until the child reaches the age of majority or discarded if the child does not survive to the age of majority. Once the child becomes an adult, he or she can make changes to the disposition of the reproductive tissue, including provisions for its posthumous use. Legal review of the institutional consent process and associated documentation can be considered to preclude future misunderstanding or a misinterpretation of tissue or specimen disposition or disposal. Because case law has evolved in the area of disposition of previously collected embryos and gametes, which has not always strictly enforced documentation in a consent form, periodic review of the program’s written consents by an institutional attorney may be helpful. For this reason, involving an attorney as part of the team can be beneficial to families and medical personnel. Once the child reaches the age of majority, he or she should issue new documentation regarding his or her wishes for future storage of previously collected reproductive material.

It should also be disclosed that success rates are not guaranteed. Even with successful collection and freezing of eggs, sperm, and/or embryos, success rates will never be 100%; some children who go through the process of fertility preservation will not ultimately be successful in using their cryopreserved reproductive tissue. Additionally, there are no guarantees that stored embryos and gametes will be viable when ready for reproductive use or be free of neoplasia. Also, unexpected catastrophes, both natural and man-made, can lead to unintended damage to or destruction of reproductive tissue.

Barriers to Receiving Counseling

Survey results of adult male and female survivors of cancer of reproductive age and studies evaluating oncology practice patterns for discussing infertility have suggested that a conversation with patients with cancer regarding the potential consequences of their treatment on future fertility was lacking in more than half of cases.³ Pediatric oncologists admit that, despite their motivation to preserve fertility in their patients and their belief that all pubertal patients with cancer could benefit from a fertility consultation, they do not use the ASCO fertility preservation guidelines³ and instead refer their patients to fertility specialists only a minority of the time.¹²⁸ Oncologists provide many different explanations for not referring patients for fertility preservation, including not recognizing the importance of this issue, assuming that patients cannot afford fertility preservation procedures, feeling emotionally uncomfortable discussing the topic, or choosing not to refer the patient because of a poor prognosis.⁷³ Additional barriers include beliefs that such discussions will add additional stress to an overwhelmed family or will violate provider or family cultural taboos on issues of sexuality. Even when counseling does occur, family satisfaction with the process is often lacking; in one study, only 30% of parents were satisfied with the fertility preservation counseling they received regarding their children.¹²⁹ In a survey study identifying reproductive concerns of adolescent girls with cancer and their parents, the concerns of the respective groups were not congruent. Parents incorrectly expected their daughters to be satisfied with only survivorship and less concerned about reproductive potential.¹³⁰ In another study in which families were to recall discussions they had regarding fertility expectations after surviving cancer, only about half of parents recalled receiving information on the topic and nearly one-third expected normal fertility.¹³¹

Patients themselves are generally asking for this information and have identified preservation of fertility as extremely important.¹⁷ Most men taking one survey responded that they believed having experienced cancer increased the value they placed on family closeness and would make them better parents.¹³² For men who desire children in the future, lack of timely information is the most common reason for not banking sperm. A survey of adolescent patients with cancer revealed that 81% would want to undergo investigational or research-based procedures to attempt to maintain their fertility.¹³³ Additional data suggest that the process of fertility preservation, in and of itself, may be therapeutic; for example, young male survivors demonstrated lower distress and enhanced coping with cancer treatment simply from the knowledge that they had stored sperm.^134,135 In addition, the long-term morbidity associated with infertility and interrupted childbearing is not minor and persists well into adulthood.¹³⁶ In addition to fertility preservation options, strategies to help survivors of cancer identify and deal with unresolved grief about cancer-related infertility are important health care interventions.

Despite its perceived importance, the process is not easy for patients and families. Making an appointment with the andrology laboratory usually is the responsibility of the patient and family. Chemotherapy induction may need to proceed expeditiously and may not allow the luxury of time for needed consultations and decision-making or may preclude the ability of the patient to provide more than 1 or 2 samples.⁸⁷ Facilitating the andrology laboratory visit and delaying the initiation of chemotherapy, if possible, are 2 approaches that might be used in appropriate cases to increase fertility options of survivors of cancer. Some situations are true medical emergencies (eg, respiratory compromise from a mediastinal lymphoma) or are significantly urgent to preclude even the short delay required for an andrology laboratory visit.

Currently available fertility preservation options are not believed to compromise the success of cancer therapy or adversely affect a survivor’s health.³ Other than hereditary genetic syndromes, large registry studies have failed to demonstrate an increased risk of genetic abnormalities,^19,23 congenital malformations,^20–22 or cancers in the children of survivors of cancer.^{26–30,32,33} Disclosing this information to patients and families will provide reassurance of the potential value of fertility preservation.¹³⁷ For families with hereditary conditions that are risk factors for developing malignancies, the development of preimplantation genetic testing of embryos allows couples to undergo IVF and screen their embryos for the hereditary cancer syndrome for which their offspring is at risk. By electing not to transfer affected embryos, the risk of transmitting cancer genes to their offspring is dramatically reduced. This approach is supported by the American Academy of Pediatrics as well as by the Ethics Committee of the American Society for Reproductive Medicine for couples who wish to avoid having children with high-risk cancers.¹³⁸

One difficulty in counseling either sex regarding risks to future fertility is that there are few absolutes, and the discussion should be focused on a risk assessment. Some treatments have a high risk of infertility, diminished ovarian reserve, sterility, and/or premature ovarian failure. Other treatments are less likely to lead to the inability to have children. The level of concern over the potential loss of fertility should be addressed, and the spectrum of fertility options that are available to an individual should be presented.