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Wijmenga, C. et al.

The human skeletal muscle adenine nucleotide translocator gene maps to chromosome 4q35 in the region of the facioscapulohumeral muscular dystrophy locus.

Facioscapulohumeral muscular dystrophy (FSHD) is a relatively common autosomal dominant neuromuscular disorder. The gene for FSHD has recently been assigned to chromosome 4q35. Although abnormal mitochondrial and biochemical changes have been observed in FSHD, the molecular defect is unknown. In addition to the FSHD gene, the human muscle adenine nucleotide translocator gene (ANT1) is located on chromosome 4. Interestingly, biochemical studies recently showed a possible defect of ANT1. In order to evaluate the potential role of ANT1 in the etiology of FSHD, the human ANT1 gene was isolated by cosmid cloning and localized to 4q35, in the region containing the FSHD gene. However, in situ hybridization and physical mapping of somatic cell hybrids localized the ANT1 gene proximal to the FSHD gene. In addition, a polymorphic CA-repeat 5 kb upstream of the ANT1 gene was used as a marker in FSHD and Centre d'Etude du Polymorphisme Humain families to perform linkage analysis. These data together exclude ANT1 as the primary candidate gene for FSHD. The most likely order of the loci on chromosome 4q35 is cen-ANT1-D4S171-F11-D4S187-D4S163-D4S139-+ ++FSHD-tel.[1]

References

The human skeletal muscle adenine nucleotide translocator gene maps to chromosome 4q35 in the region of the facioscapulohumeral muscular dystrophy locus. Wijmenga, C., Winokur, S.T., Padberg, G.W., Skraastad, M.I., Altherr, M.R., Wasmuth, J.J., Murray, J.C., Hofker, M.H., Frants, R.R. Hum. Genet. (1993) [Pubmed]

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