## Abstract Partial or complete duplication of 5p is a rare chromosomal abnormality in which genotype‐phenotype correlation studies are hampered by other commonly associated chromosomal abnormalities. We report on a new patient in whom a complete de novo trisomy 5p in all metaphases represented the
‘Complete’ trisomy 5p; de novo translocation t(2;5)(q36;p11) with isochromosome 5p
✍ Scribed by N. J. Leschot; K. S. Lim
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 344 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0340-6717
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✦ Synopsis
A case of complete trisomy 5p due to a de novo translocation t(2;5)(q36;p11) with an isochromosome 5p is described. Complete trisomy 5p has been reported only once (Brimblecombe et al., 1977). The confusing literature relating to partial trisomy 5p is reviewed. Comparison of our case with the patients reported by Brimblecombe et al. (1977) and by Opitz and Patau (1975) is suggestive for a distinct clinical syndrome if (almost) the complete short arm of chromosome 5 is present in a trisomic state. Unfortunately the clinical findings in the case of Brimblecombe (1966, 1977) are poorly documented. The main features of this syndrome are: macrocephaly, psychomotor retardation, hypotonia, postnatal growth failure, tracheobronchial involvement, mongoloid slant of the eyes, epicanthus, low-set ears, depressed nasal bridge, short first toe, and seizures.
📜 SIMILAR VOLUMES
We describe a de novo trisomy 5p in a 1-year-old severely retarded boy. The complete short arm of chromosome 5 segregated as an additional marker chromosome in all metaphases. The marker was identified as 5p by conventional cytogenetic techniques (GTG, GBG, CBG) and molecular cytogenetic techniques
A father a n d daughter with isolated aniridia were observed to have a n apparently balanced, reciprocal translocation involving chromosomes 5 and 11 [t(5;ll)(ql3.l;pl3)1. No other clinical characteristics often associated with the deletion of llp13 were observed in this family. This finding, in ass