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Fertility preservation strategies for male patients with cancer

Abstract

With the increasing number of patients surviving cancer, there is increasing interest in long-term quality of life, especially with respect to cancer-related infertility. Although infertility most commonly occurs as the result of treatment with gonadotoxic agents, it can also manifest before treatment has commenced. Current fertility preservation strategies for the postpubertal male patient with cancer focus on sperm cryopreservation before therapy. Sperm acquisition techniques should be discussed with the patient as early as possible, by either an oncologist or a specialist in male reproduction. For patients rendered infertile by cancer treatment who did not cryopreserve sperm beforehand, there are no techniques currently available to restore fertility. For the prepubertal male patient, cryopreservation of sperm is impossible. However, emerging research—primarily in animal models—into promising fertility preservation and restoration strategies might provide a clinical solution in the future. Advances in the protection and cryopreservation of spermatogonial stem cells (SSCs) might translate into clinical options for fertility preservation before treatment. Restoring fertility after treatment might also be possible via SSC autotransplantation or in vitro maturation of SSCs. Before any of these techniques become clinically viable, a number of scientific, logistical and ethical issues will need to be resolved.

Key Points

  • Infertility related to cancer is a major issue for many cancer survivors and should be discussed as early as possible during treatment planning

  • Impairment of fertility related to cancer can manifest before, during or after treatment

  • Existing fertility preservation strategies for men focus on acquiring sperm for cryopreservation before therapy; patients rendered infertile by cancer treatments who did not cryopreserve sperm beforehand are unable to father a biological child

  • Promising advances in spermatogonial stem cell research might lead to future fertility preservation and restoration options for male patients with cancer

  • A number of scientific, logistical and ethical barriers might need to be overcome before investigational fertility preservation strategies can be used clinically, especially for prepubertal patients

  • Development of, and adherence to, clinical care pathways, education of oncological health-care providers and involvement of male reproductive specialists should be included in the management of infertility in male patients with cancer

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Figure 1: Potential options for fertility preservation in the future.

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Acknowledgements

Supported by The Sidney Kimmel Center for Prostate and Urologic Cancers.

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All authors researched data for the article and contributed to the discussion of content. D. J. Katz, T. F. Kolon and J. P. Mulhall wrote the article and reviewed the manuscript before submission.

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Katz, D., Kolon, T., Feldman, D. et al. Fertility preservation strategies for male patients with cancer. Nat Rev Urol 10, 463–472 (2013). https://doi.org/10.1038/nrurol.2013.145

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