Abstract:
:We present clinical, cytogenetic, and linkage data of four DNA probes from the terminal long arm of the X chromosome in ten new families with fragile X syndrome. A prior/posterior method of multipoint linkage analysis is employed to combine these results with published data to refine the linkage map of terminal Xq. Ten possible probe/disease orderings were tested. The order with the greatest posterior probability (0.78) of the five loci is 52a-F9-fragile X gene-DX13-St14, although the order with reversal of the positions of 52a and F9 has a posterior probability 0.15. The mean estimates of the distances between the probes and the fragile X gene are 38 cM and 33 cM for the proximal probes 52a and F9, and 8 cM and 12 cM for the distal probes DX13 and St14. Although the current method of choice in the prenatal diagnosis and carrier detection of the fragile X syndrome remains detailed cytogenetic analysis, consideration is given to the potential role of these DNA probes, both singly and in pairs.
journal_name
Hum Genetjournal_title
Human geneticsauthors
Buchanan JA,Buckton KE,Gosden CM,Newton MS,Clayton JF,Christie S,Hastie Ndoi
10.1007/BF00284915subject
Has Abstractpub_date
1987-06-01 00:00:00pages
165-72issue
2eissn
0340-6717issn
1432-1203journal_volume
76pub_type
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