Trisomy of 3pter in a patient with apparent C (trigonocephaly) syndrome

Am J Med Genet. 2000 Oct 2;94(4):311-5. doi: 10.1002/1096-8628(20001002)94:4<311::aid-ajmg9>;2-u.


The C syndrome is a multiple congenital anomaly/mental retardation (MCA/MR) syndrome first described in sibs. The inheritance has been assumed to be autosomal recessive. Several authors have commented that the combination of anomalies found in the conditions suggest an underlying chromosomal anomaly and in a few apparent cases chromosome anomalies have been described. Our patient had findings consistent with the C syndrome and a duplication of 3p by use of subtelomere probes. This shows that new cytogenetic techniques continue to be important in defining the underlying cause of MCA/MR conditions.

Publication types

  • Case Reports

MeSH terms

  • Abnormalities, Multiple / diagnosis
  • Abnormalities, Multiple / genetics
  • Chromosome Banding
  • Chromosomes, Human, Pair 3 / genetics*
  • Chromosomes, Human, Pair 5 / genetics
  • Craniofacial Abnormalities / diagnosis
  • Craniofacial Abnormalities / genetics*
  • Developmental Disabilities / diagnosis
  • Developmental Disabilities / genetics*
  • Female
  • Humans
  • In Situ Hybridization, Fluorescence
  • Infant, Newborn
  • Male
  • Syndrome
  • Trisomy / diagnosis
  • Trisomy / genetics*