Moderate mental retardation and nonspecific dysmorphic syndrome associated with ring chromosome 9.
- Published Article
- Publication Date
Jan 01, 1979
A ring chromosome 9 is reported in a 12-year-old, moderately mentally retarded boy. As in other ring chromosome 9 patients, the clinical stigmata are nonspecific and their expressivity is mild. The finding of two normal cells of a total of 121 cells examined favors the hypothesis of a postzygotic, mitotic origin of the ring chromosome formation.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/468257