Localisation of the gene for Hunter syndrome on the long arm of X chromosome

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Abstract
The localisation of the gene for Hunter syndrome (MPS II) has been studied in 11 families using 12 polymorphic DNA markers, one on the short arm and the remaining 11 located at various points on the long arm of the X chromosome. Lod scores for seven probes were uniformly negative for all values of θ; positive scores at values of θ=0.10 or more were obtained for the five probes located most distally on the long arm (52A, F9C, DX13, St14-1, F8C). Current data suggest the most likely order of the loci to be: 52A, F9C, Hunter, DX13, St14-1, F8C-qter; the Hunter locus may thus be close to that for the fragile site at Xq27.