Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Gecz, J. et al.

Gecz, Baker, Donnelly, Ming, McDonald-McGinn, Spinner, Zackai, Sutherland, Mulley,

Fibroblast growth factor homologous factor 2 (FHF2): gene structure, expression and mapping to the BÃ¶rjeson-Forssman-Lehmann syndrome region in Xq26 delineated by a duplication breakpoint in a BFLS-like patient.

BÃ¶rjeson-Forssman-Lehmann syndrome (BFLS) is a syndromal X-linked mental retardation, which maps by linkage to the q26 region of the human X chromosome. We have identified a male patient with BFLS-like features and a duplication, 46,Y,dup(X)(q26q28), inherited from his phenotypically normal mother. Fluorescence in situ hybridisation using yeast artificial chromosome clones from Xq26 localised the duplication breakpoint to an approximately 400-kb interval in the Xq26.3 region between DXS155 and DXS294/DXS730. Database searches and analysis of available genomic DNA sequence from the region revealed the presence of the fibroblast growth factor homologous factor gene, FHF2, within the duplication breakpoint interval. The gene structure of FHF2 was determined and two new exons were identified, including a new 5' end exon, 1B. FHF2 is a large gene extending over approximately 200 kb in Xq26.3 and is composed of at least seven exons. It shows tissue-specific alternative splicing and alternative transcription starts. Northern blot hybridisation showed highest expression in brain and skeletal muscle. The FHF2 gene localisation and tissue-specific expression pattern suggest it to be a candidate gene for familial cases of the BFLS syndrome and other syndromal and non-specific forms of X-linked mental retardation mapping to the region.[1]

References

Fibroblast growth factor homologous factor 2 (FHF2): gene structure, expression and mapping to the Börjeson-Forssman-Lehmann syndrome region in Xq26 delineated by a duplication breakpoint in a BFLS-like patient. Gecz, J., Baker, E., Donnelly, A., Ming, J.E., McDonald-McGinn, D.M., Spinner, N.B., Zackai, E.H., Sutherland, G.R., Mulley, J.C. Hum. Genet. (1999) [Pubmed]

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