Mp. Russo et al., ANALYSIS OF LINKAGE DISEQUILIBRIUM BETWEEN DIFFERENT CYSTIC-FIBROSIS MUTATIONS AND 3 INTRAGENIC MICROSATELLITES IN THE ITALIAN POPULATION, Human mutation, 5(1), 1995, pp. 23-27
Three intragenic microsatellites of the CFTR gene, a TA and a CA repea
ts, namely IVS17bTA and IVS 17bCA, located in intron 17b and a CA repe
at (IVS8CA) located in intron 8 of the CFTR gene, were analyzed in a l
arge sample of Italian cystic fibrosis (CF) and normal chromosomes. Li
nkage disequilibrium was evaluated between each marker and different C
F mutations on a total of 377 CF and 358 normal chromosomes. Our resul
ts are consistent with the hypothesis that all Delta F508 chromosomes
derive from a single mutational event. The same hypothesis is valid fo
r mutations G542X, N1303K, 1711-1C-->A, which might have been originat
ed more recently than Delta F508. (C) 1995 Wiley-Liss, Inc.