Summary
A family in which an interstitial deletion of the X chromosome, del(X)(q13q21.3), is segregating was ascertained through a boy with cleft lip and palate, agenesis of the corpus callosum, and severe mental retardation. The possible causal relationship to his chromosome abnormality is discussed. Although the deletion occurred within the critical region, the mother showed no signs of gonadal dysgenesis. A phenotypically normal daughter was, as her mother, monosomic for this region of the X, and both showed random inactivation of the X chromosome.
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Supported in part by grants to E.N. from the Carl Petersen's Foundation (B 995) and the Danish Medical Research Council (512-4276)
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Tabor, A., Andersen, O., Lundsteen, C. et al. Interstitial deletion in the “critical region” of the long arm of the X chromosome in a mentally retarded boy and his normal mother. Hum Genet 64, 196–199 (1983). https://doi.org/10.1007/BF00327127
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DOI: https://doi.org/10.1007/BF00327127