Oncofertility

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Placing ovarian tissue strips into the preserving solution Petefeszekszovet-csikok fagyaszto oldatba helyezese.jpg
Placing ovarian tissue strips into the preserving solution

Oncofertility is a subfield that bridges oncology and reproductive research to explore and expand options for the reproductive future of cancer survivors. The name was coined in 2006 by Teresa K. Woodruff at the Oncofertility Consortium.

Contents

Cancer treatments, such as chemotherapy, radiation, and surgery, may destroy a person's ability to have children later in life, and oncofertility research focuses on increasing fertility preservation options. With 10% of cancer patients being younger than age 40, this issue affects more than 135,000 people in the United States each year. As cancer survivorship increases, the preservation of fertility in women, men, and children becomes a critically important topic to patients and their families. The ability to easily preserve fertility prior to cancer treatment can provide hope at the time of diagnosis for families later in life. Oncofertility also incorporates reproductive issues after cancer treatment, such as family planning, complex contraception, hormonal management throughout survivorship, surrogacy, and adoption.

Fertility options for men

Established fertility preservation options for men include sperm banking, in which a semen sample is produced, frozen, and stored for future use, [1] and testicular sperm extraction, during which sperm is retrieved directly from the testes through a short surgical procedure and frozen. [ citation needed ]

Experimental options include testicular tissue banking when testicular tissue is surgically removed and frozen. Scientists are developing methods to use this tissue for fertility preservation in males. [ citation needed ]

Men who do not preserve their fertility prior to cancer treatment may have children through donor sperm, using sperm from a known or anonymous donor to achieve a pregnancy with a female partner, or by using assisted reproductive technologies or adoption.[ citation needed ]

Fertility options for women

Cryopreserving ovarian tissue strips Petefeszekszovet-csikok fagyasztva tarolasa.jpg
Cryopreserving ovarian tissue strips

Options for women to have children after cancer have increased significantly in recent years. [2] Women should be counseled on established options such as embryo banking in which hormonal stimulation causes the production of multiple eggs, which are removed, fertilized by sperm, and frozen for future use, and egg banking in which hormonal stimulation causes the production of multiple eggs, which are removed and frozen for storage and future use, and ovarian transposition (surgically moving the ovaries to a different part of the body) and ovarian shielding (physically shielding the ovaries from the area receiving radiation). [3]

Experimental techniques include ovarian tissue banking in which an ovary is surgically removed and frozen to be transplanted back into the woman when she is ready to have children. Scientists are also working on ways to mature undeveloped eggs from this ovarian tissue. [ citation needed ]

After sterilizing cancer treatment, permanent damage to the uterus could be sustained. [4] A woman can also choose surrogacy (when a woman carries a pregnancy for another woman or couple) or adoption. [ citation needed ]

Recent efforts also investigate the implications of a cancer diagnosis during pregnancy.[ citation needed ]

Fertility options for children

Prepubescent children have fewer options to preserve fertility than adults. [5] These include testicular sperm extraction for males and ovarian tissue banking for females.

Fertility preservation costs may be prohibitive for young patients and multiple organizations now provide methods to reduce costs for patients. [6] These include Fertile Hope and Fertile Action.[ citation needed ]

The Supreme Court of the United States addressed the Social Security implications of oncofertility in March 2012 with Astrue v. Capato .[ citation needed ]

Research also investigates ethical issues in oncofertility, such as the decision-making process for adolescent children and their families. [7]

Related Research Articles

<span class="mw-page-title-main">In vitro fertilisation</span> Assisted reproductive technology procedure

In vitro fertilisation (IVF) is a process of fertilisation where an egg is combined with sperm in vitro. The process involves monitoring and stimulating a woman's ovulatory process, removing an ovum or ova from their ovaries and letting a man's sperm fertilise them in a culture medium in a laboratory. After the fertilised egg (zygote) undergoes embryo culture for 2–6 days, it is transferred by catheter into the uterus, with the intention of establishing a successful pregnancy.

Infertility is the inability of an animal or plant to reproduce by natural means. It is usually not the natural state of a healthy adult, except notably among certain eusocial species. It is the normal state of a human child or other young offspring, because they have not undergone puberty, which is the body's start of reproductive capacity.

<span class="mw-page-title-main">Assisted reproductive technology</span> Methods to achieve pregnancy by artificial or partially artificial means

Assisted reproductive technology (ART) includes medical procedures used primarily to address infertility. This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), cryopreservation of gametes or embryos, and/or the use of fertility medication. When used to address infertility, ART may also be referred to as fertility treatment. ART mainly belongs to the field of reproductive endocrinology and infertility. Some forms of ART may be used with regard to fertile couples for genetic purpose. ART may also be used in surrogacy arrangements, although not all surrogacy arrangements involve ART. The existence of sterility will not always require ART to be the first option to consider, as there are occasions when its cause is a mild disorder that can be solved with more conventional treatments or with behaviors based on promoting health and reproductive habits.

Fertility medications, also known as fertility drugs, are medications which enhance reproductive fertility. For women, fertility medication is used to stimulate follicle development of the ovary. There are very few fertility medication options available for men.

<span class="mw-page-title-main">Testicular sperm extraction</span> Surgical procedure

Testicular sperm extraction (TESE) is a surgical procedure in which a small portion of tissue is removed from the testicle and any viable sperm cells from that tissue are extracted for use in further procedures, most commonly intracytoplasmic sperm injection (ICSI) as part of in vitro fertilisation (IVF). TESE is often recommended to patients who cannot produce sperm by ejaculation due to azoospermia.

<span class="mw-page-title-main">Oocyte cryopreservation</span> Procedure to preserve a womans eggs (oocytes)

Oocyte cryopreservation is a procedure to preserve a woman's eggs (oocytes). This technique has been used to postpone pregnancy. When pregnancy is desired, the eggs can be thawed, fertilized, and transferred to the uterus as embryos. Several studies have shown that most infertility problems are due to germ cell deterioration related to aging. The procedure's success rate varies depending on the age of the woman,, as well as depending on health and genetic indicators. In 1986, the first human birth of oocyte oocyte cryopreservation was reported.

<span class="mw-page-title-main">In vitro maturation</span> Artificial maturation of harvested immature egg cells

In vitro maturation (IVM) is the technique of letting the contents of ovarian follicles and the oocytes inside mature in vitro. It can be offered to women with infertility problems, combined with In Vitro Fertilization (IVF), offering women pregnancy without ovarian stimulation.

Fertility preservation is the effort to help cancer patients retain their fertility, or ability to procreate. Research into how cancer, ageing and other health conditions effect reproductive health and preservation options are growing. Specifically sparked in part by the increase in the survival rate of cancer patients.

<span class="mw-page-title-main">Cryopreservation</span> Process to preserve biological matter

Cryopreservation or cryoconservation is a process where biological material - cells, tissues, or organs - are frozen to preserve the material for an extended period of time. At low temperatures any cell metabolism which might cause damage to the biological material in question is effectively stopped. Cryopreservation is an effective way to transport biological samples over long distances, store samples for prolonged periods of time, and create a bank of samples for users. Molecules, referred to as cryoprotective agents (CPAs), are added to reduce the osmotic shock and physical stresses cells undergo in the freezing process. Some cryoprotective agents used in research are inspired by plants and animals in nature that have unique cold tolerance to survive harsh winters, including: trees, wood frogs, and tardigrades.The first human corpse to be frozen with the hope of future resurrection was James Bedford's, a few hours after his cancer-caused death in 1967.[15] Bedford's is the only cryonics corpse frozen before 1974 still frozen today.

The Genetics & IVF Institute (GIVF) is an international provider of infertility and genetics services and products, and also engages in biomedical research in these fields. The Institute was founded in 1984 by Dr. Joseph D. Schulman and associates. GIVF headquarters are in Fairfax, VA, US, and its facilities include locations in Pennsylvania, Minnesota, California, and Texas in the United States, as well as in China, Mexico, and several other countries.

Reproductive surgery is surgery in the field of reproductive medicine. It can be used for contraception, e.g. in vasectomy, wherein the vasa deferentia of a male are severed, but is also used plentifully in assisted reproductive technology. Reproductive surgery is generally divided into three categories: surgery for infertility, in vitro fertilization, and fertility preservation.

Ovarian tissue cryopreservation is cryopreservation of tissue of the ovary of a female.

Ovarian drilling, also known as multiperforation or laparoscopic ovarian diathermy, is a surgical technique of puncturing the membranes surrounding the ovary with a laser beam or a surgical needle using minimally invasive laparoscopic procedures. It differs from ovarian wedge resection, which involves the cutting of tissue. Minimally invasive ovarian drilling procedures have replaced wedge resections. Ovarian drilling is favored over wedge resection because cutting into the ovary might result in adhesions, potentially complicating postoperative outcomes. Ovarian drilling and ovarian wedge resection are treatment options to reduce the amount of androgen producing tissue in women with polycystic ovarian syndrome (PCOS). PCOS is the primary cause of anovulation, which results in female infertility. The induction of mono-ovulatory cycles can restore fertility.

The Fertiprotekt network is a cooperation of university centres, hospitals and practices. It was founded in Germany in 2006. The network now extends to all German-speaking countries and currently units ca. 100 institutions in Germany, Austria and Switzerland.

Ovarian follicle activation can be defined as primordial follicles in the ovary moving from a quiescent (inactive) to a growing phase. The primordial follicle in the ovary is what makes up the “pool” of follicles that will be induced to enter growth and developmental changes that change them into pre-ovulatory follicles, ready to be released during ovulation. The process of development from a primordial follicle to a pre-ovulatory follicle is called folliculogenesis.

Cancer in adolescents and young adults is cancer which occurs in those between the ages of 15 and 39. This occurs in about 70,000 people a year in the United States—accounting for about 5 percent of cancers. This is about six times the number of cancers diagnosed in children ages 0–14. Globally, nearly 1 million young adults between the ages of 20 and 39 were diagnosed with cancer in 2012, and more than 350,000 people in this age range died from cancer.

Cryopreservation of testicular tissue is an experimental method being used to preserve fertility in pre-pubescent males, or males who cannot produce sperm, to allow them the option of having biological children.

<span class="mw-page-title-main">Artificial ovary</span>

An artificial ovary is a potential fertility preservation treatment that aims to mimic the function of the natural ovary.

<span class="mw-page-title-main">Use of assisted reproductive technology by LGBT people</span>

Lesbian, gay, bisexual, and transgender people people wishing to have children may use assisted reproductive technology. In recent decades, developmental biologists have been researching and developing techniques to facilitate same-sex reproduction.

<span class="mw-page-title-main">Side effects of radiotherapy on fertility</span>

The side effects of radiotherapy on fertility are a growing concern to patients undergoing radiotherapy as cancer treatments. Radiotherapy is essential for certain cancer treatments and often is the first point of call for patients. Radiation can be divided into two categories: ionising radiation (IR) and non-ionising radiation (NIR). IR is more dangerous than NIR and a source of this radiation is X-rays used in medical procedures, for example in radiotherapy.

References

  1. Sheth, Kunj R.; Sharma, Vidit; Helfand, Brian T.; Cashy, John; Smith, Kristin; Hedges, Jason C.; Köhler, Tobias S.; Woodruff, Teresa K.; Brannigan, Robert E. (2012). "Improved Fertility Preservation Care for Male Patients with Cancer After Establishment of Formalized Oncofertility Program". The Journal of Urology. 187 (3): 979–86. doi:10.1016/j.juro.2011.10.154. PMID   22264454.
  2. Noyes, Nicole; Knopman, Jaime M.; Long, Kara; Coletta, Jaclyn M.; Abu-Rustum, Nadeem R. (2011). "Fertility considerations in the management of gynecologic malignancies". Gynecologic Oncology. 120 (3): 326–33. doi:10.1016/j.ygyno.2010.09.012. PMID   20943258.
  3. Jungheim, Emily S.; Carson, Kenneth R.; Brown, Douglas (2010). "Counseling and Consenting Women with Cancer on Their Oncofertility Options: A Clinical Perspective". Oncofertility. Cancer Treatment and Research. Vol. 156. pp. 403–12. doi:10.1007/978-1-4419-6518-9_31. ISBN   978-1-4419-6517-2. PMC   3071538 . PMID   20811851.
  4. Griffiths M, Marshall S, Cousins F, Alesi L, Higgins J, Giridharan S, Sarma U, Menkhorst E, Zhou W, Care A, Donoghue J, Holdsworth-Carson S, Rogers P, Dimitriadis E, Gargett C ,Robertson S, Winship A & Hutt K. Radiotherapy exposure directly damages the uterus and causes pregnancy loss. (2023) JCI Insight. 8(6):e163704. doi: 10.1172/jci.insight.163704 PMID 36946464
  5. Wallace, W. Hamish B. (2011). "Oncofertility and preservation of reproductive capacity in children and young adults". Cancer. 117 (10 Suppl): 2301–10. doi: 10.1002/cncr.26045 . PMID   21523750.
  6. King, Rosalind Berkowitz (2010). "Perspectives on Oncofertility from Demography and Economics". Oncofertility. Cancer Treatment and Research. Vol. 156. pp. 371–9. doi:10.1007/978-1-4419-6518-9_28. ISBN   978-1-4419-6517-2. PMC   3071554 . PMID   20811848.
  7. Galvin, Kathleen M.; Clayman, Marla L. (2010). "Whose Future Is It? Ethical Family Decision Making About Daughters' Treatment in the Oncofertility Context". Oncofertility. Cancer Treatment and Research. Vol. 156. pp. 429–45. doi:10.1007/978-1-4419-6518-9_33. ISBN   978-1-4419-6517-2. PMC   3086488 . PMID   20811853.