The fragile X syndrome. A study of 83 families.

@article{Fryns1984TheFX,
  title={The fragile X syndrome. A study of 83 families.},
  author={J. P. Fryns},
  journal={Clinical genetics},
  year={1984},
  volume={26 6},
  pages={497-528}
}
The present report summarizes the experience on the mar(X) syndrome in a total of 157 male patients (44 prepubertal and 113 postpubertal) ascertained through 83 index patients from 83 families under investigation. In one third of the families pedigree data were consistent with X-linked recessive inheritance. In the further two thirds of the families the presenting symptom was familial mental retardation with a mentally retarded mother, or mental subnormality with hyperkinetic behaviour in the… CONTINUE READING

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