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Mol. Hum. Reprod. Advance Access originally published online on June 25, 2004
Molecular Human Reproduction 2004 10(8):613-615; doi:10.1093/molehr/gah073
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Molecular Human Reproduction vol. 10 no. 8 © European Society of Human Reproduction and Embryology 2004; all rights reserved

Lack of the T54A polymorphism of the DAZL gene in infertile Italian patients

L. Bartoloni, C. Cazzadore, A. Ferlin, A. Garolla and C. Foresta1

University of Padova, Department of Histology, Microbiology and Medical Biotechnologies, Centre for Male Gamete Cryopreservation, Via Giustiniani 2, Monoblocco 9th Floor, 35128 Padova, Italy

1 To whom correspondence should be addressed. Email: carlo.foresta{at}unipd.it

The Thr54Ala polymorphism of the deleted-in-azoospermia-like (DAZL) protein has been associated with susceptibility to spermatogenic failure in the Taiwanese population. We used single-strand conformation polymorphism and restriction fragment analyses to investigate the presence of the A->G transition in exon 3 of the DAZL gene in 95 infertile Italian patients. The patients had oligozoospermia or non-obstructive azoospermia with different degrees of testicular cytological picture. The allele carrying T54A polymorphism was not present in this group of patients nor in 63 controls, indicating that the frequency of this putative mutation is <1% in Italy. Since the Italian population usually shows allelic frequencies similar to the other Caucasian populations, we suggest that the T54A allele might play a role in infertility only in Taiwanese or Asiatic individuals.

Key words: azoospermia/DAZL/male infertility/oligozoospermia


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