A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys

Picton HM, Wyns C, Anderson RA, Goossens E, Jahnukainen K, Kliesch S, Mitchell RT, Pennings G, Rives N, Tournaye H, van Pelt AMM, et al. (2015)
Human Reproduction 30(11): 2463-2475.

Journal Article | Published | English

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STUDY QUESTION: What clinical practices, patient management strategies and experimental methods are currently being used to preserve and restore the fertility of prepubertal boys and adolescent males? SUMMARY ANSWER: Based on a review of the clinical literature and research evidence for sperm freezing and testicular tissue cryopreservation, and after consideration of the relevant ethical and legal challenges, an algorithm for the cryopreservation of sperm and testicular tissue is proposed for prepubertal boys and adolescent males at high risk of fertility loss. WHAT IS KNOWN ALREADY: A known late effect of the chemotherapy agents and radiation exposure regimes used to treat childhood cancers and other non-malignant conditions in males is the damage and/or loss of the proliferating spermatogonial stem cells in the testis. Cryopreservation of spermatozoa is the first line treatment for fertility preservation in adolescent males. Where sperm retrieval is impossible, such as in prepubertal boys, or it is unfeasible in adolescents prior to the onset of ablative therapies, alternative experimental treatments such as testicular tissue cryopreservation and the harvesting and banking of isolated spermatogonial stem cells can now be proposed as viable means of preserving fertility. STUDY DESIGN, SIZE, DURATION: Advances in clinical treatments, patient management strategies and the research methods used to preserve sperm and testicular tissue for prepubertal boys and adolescents were reviewed. A snapshot of the up-take of testis cryopreservation as a means to preserve the fertility of young males prior to December 2012 was provided using a questionnaire. PARTICIPANTS/MATERIALS, SETTING, METHODS: A comprehensive literature review was conducted. In addition, survey results of testis freezing practices in young patients were collated from 24 European centres and Israeli University Hospitals. MAIN RESULTS AND THE ROLE OF CHANCE: There is increasing evidence of the use of testicular tissue cryopreservation as a meansto preserve the fertility of pre- and peri-pubertal boys of up to 16 year-old. The survey results indicate that of the 14 respondents, half of the centres were actively offering testis tissue cryobanking as a means of safeguarding the future fertility of boys and adolescents as more than 260 young patients (age range less than 1 year old to 16 years of age), had already undergone testicular tissue retrieval and storage for fertility preservation. The remaining centres were considering the implementation of a tissue-based fertility preservation programme for boys undergoing oncological treatments. LIMITATIONS, REASONS FOR CAUTION: The data collected were limited by the scope of the questionnaire, the geographical range of the survey area, and the small number of respondents. WIDER IMPLICATIONS OF THE FINDINGS: The clinical and research questions identified and the ethical and legal issues raised are highly relevant to the multi-disciplinary teams developing treatment strategies to preserve the fertility of prepubertal and adolescent boys who have a high risk of fertility loss due to ablative interventions, trauma or genetic pre-disposition.
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Picton HM, Wyns C, Anderson RA, et al. A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys. Human Reproduction. 2015;30(11):2463-2475.
Picton, H. M., Wyns, C., Anderson, R. A., Goossens, E., Jahnukainen, K., Kliesch, S., Mitchell, R. T., et al. (2015). A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys. Human Reproduction, 30(11), 2463-2475.
Picton, H. M., Wyns, C., Anderson, R. A., Goossens, E., Jahnukainen, K., Kliesch, S., Mitchell, R. T., Pennings, G., Rives, N., Tournaye, H., et al. (2015). A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys. Human Reproduction 30, 2463-2475.
Picton, H.M., et al., 2015. A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys. Human Reproduction, 30(11), p 2463-2475.
H.M. Picton, et al., “A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys”, Human Reproduction, vol. 30, 2015, pp. 2463-2475.
Picton, H.M., Wyns, C., Anderson, R.A., Goossens, E., Jahnukainen, K., Kliesch, S., Mitchell, R.T., Pennings, G., Rives, N., Tournaye, H., van Pelt, A.M.M., Eichenlaub-Ritter, U., Schlatt, S.: A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys. Human Reproduction. 30, 2463-2475 (2015).
Picton, Helen M., Wyns, Christine, Anderson, Richard A., Goossens, Ellen, Jahnukainen, Kirsi, Kliesch, Sabine, Mitchell, Rod T., Pennings, G., Rives, Natalie, Tournaye, Herman, van Pelt, Ans M. M., Eichenlaub-Ritter, Ursula, and Schlatt, Stefan. “A European perspective on testicular tissue cryopreservation for fertility preservation in prepubertal and adolescent boys”. Human Reproduction 30.11 (2015): 2463-2475.
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