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To report two azoospermic patients with reciprocal X-autosome translocations. Cytogenetic analysis utilizing GTG-banding and Yq microdeletions shown by polymerase chain reaction (PCR) with 12 sequence-tagged site (STS) markers for Y chromosome microdeletions. Cytogenetic analysis showed one man with 46,Y,t(X;19)(q22;q13.3) and the other with 46,Y,t(X;8)(p22;q11). Neither had any Yq microdeletions shown. The patient with 46,Y, t(X;8)(p22;q11) showed a slightly lower than normal testosterone level. By NCBI-Blast search, we found four testis-specific genes, t-complex-associated-testis-expressed 1-like (TCTE1L), Ferritin, heavy polypeptide-like 17 (FTHL17), Testis expressed sequence 13A (TEX13A), and Testis expressed sequence 13B (TEX13B) located near breakpoints on X chromosome. FTHL17, TEX13A, and TEX13B are spermatogonially-expressed, germ-cell-specific genes. This is the first clinical report of azoospermia with reciprocal X-autosome translocations on Xp22 and q22. These translocations on Xp22 and q22 may be direct genetic risk factors for azoospermia.

Citation

Suman Lee, Sook-Hwan Lee, Tae-Gyu Chung, Hyun-Joo Kim, Tae-Ki Yoon, In-Pyung Kwak, Sang-Hee Park, Won-Tae Cha, Sung-Won Cho, Kwang-Yul Cha. Molecular and cytogenetic characterization of two azoospermic patients with X-autosome translocation. Journal of assisted reproduction and genetics. 2003 Sep;20(9):385-9

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PMID: 14531651

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