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Moderate mental retardation and nonspecific dysmorphic syndrome associated with ring chromosome 9.

Authors
  • Fryns, J P
  • Lambrechts, A
  • Jansseune, H
  • Van den Berghe, H
Type
Published Article
Journal
Human genetics
Publication Date
Jan 01, 1979
Volume
50
Issue
1
Pages
29–32
Identifiers
PMID: 468257
Source
Medline
License
Unknown

Abstract

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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