Human Reproduction, Vol. 15, No. 12, 2686,
December 2000
© 2000 European Society of Human Reproduction and Embryology
Letters to the Editor |
Birth of a child using frozen–thawed testicular spermatozoa
Fertility Center Hamburg, Speersort 4, D-20095, Germany
Dear Sir,
In the recent paper (Res et al., 2000
) on `the use of testicular spermatozoa from a man treated for seminoma after cryopreservation of testis biopsies' the authors cite another article (Khalifeh et al., 1997), as the first report on the birth of a child using frozen–thawed testicular spermatozoa. This is not quite correct. In 1996, our paper on this subject was published in Human Reproduction and to the best of our knowledge this is in fact the first description of this method in the field of assisted procreation (Fischer et al., 1996).
References
Fischer, R., Baukloh, V., Naether, O. G. J. et al. (1996) Pregnancy after intracytoplasmic sperm injection of spermatozoa extracted from frozen–thawed testicular biopsy. Hum. Reprod., 11, 2197–2199.
Khalifeh, F.A., Sarraf, M., Dabit, S.T. et al. (1997) Full term delivery following ICSI with spermatozoa extracted from frozen-thawed testicular tissue. Hum. Reprod., 12, 87–88.
Res, U., Res, P., Kastelic, D. et al. (2000) Birth after treatment of a male with seminoma and azoospermia with cryopreserved–thawed testicular tissue. Hum. Reprod., 15, 861–864.
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