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Absence of genetic heterogeneity in Duchenne muscular dystrophy shown by a linkage study using two cloned DNA sequences.
  1. T O'Brien,
  2. P S Harper,
  3. K E Davies,
  4. J M Murray,
  5. M Sarfarazi,
  6. R Williamson

    Abstract

    A linkage study using two different restriction fragment length polymorphisms (RFLPs) identified with cloned DNA sequences has failed to provide evidence for genetic heterogeneity in Duchenne muscular dystrophy (DMD) when tested against intelligence quotient (IQ). Analysis of data for age of confinement to a wheelchair against IQ gave no evidence for heterogeneity. These results are of a practical as well as theoretical significance, since the existence of multiple loci causing DMD would make it more difficult to apply linkage data to genotype prediction in this disease.

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