Abstract
The gene causing von Recklinghausen neurofibromatosis, or NF1, has been more precisely localized in the pericentromeric region of chromosome 17. Narrowing of the location for the disease became possible through the identification of eight new DNA probe genetic markers in the centromeric region. Markers that closely flank the centromere also closely flank the NF1 gene. Although there was evidence against this localization in one recombinant, a review of the clinical records revealed a borderline diagnosis of NF1. Significant sex differences in recombination were observed in the pericentric region, and odds for different orders were less discriminating when sex differences were considered in multilocus analyses. The location of the NF1 gene with respect to the centromere could not be determined because recombinants between NF1 and the centromere were not detected in the set of families tested.
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