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This study details a male infant with unique facial features, clubfeet, and hydrocephalus internus. Cytogenetic analysis revealed a rare tandem translocation between chromosomes 11 and 13, impacting development.
Area of Science:
- Genetics
- Pediatrics
- Human Cytogenetics
Background:
- Congenital anomalies present unique diagnostic challenges.
- Chromosomal abnormalities are a significant cause of birth defects.
- Rare chromosomal translocations require detailed investigation.
Purpose of the Study:
- To report a case of a male infant with unusual physical findings.
- To characterize a novel chromosomal abnormality using cytogenetic studies.
- To correlate the identified karyotype with the infant's phenotype.
Main Methods:
- Clinical examination of the infant, noting facial appearance, clubfeet, and hydrocephalus.
- Cytogenetic analysis to determine the karyotype.
- Detailed analysis of the translocation involving chromosomes 11 and 13.
Main Results:
- The infant presented with dysmorphic facial features, bilateral clubfeet, and moderate hydrocephalus internus.
- Karyotype revealed 45,XY,--C,--D,+t(C;D), indicating a complex chromosomal rearrangement.
- A tandem translocation between chromosome 11 and chromosome 13 was identified, with loss of genetic material.
Conclusions:
- The described karyotype, t(11;13)(q11;q13), represents a rare chromosomal abnormality.
- The observed phenotype in the infant may be associated with this specific translocation and associated genetic material loss.
- Further research is needed to understand the full spectrum of clinical manifestations associated with this translocation.
Abstract:
A male infant is described with unusual facial appearance, clubfeet, and moderate hydrocephalus internus without obvious deficiency in mental and physical development. Cytogenetic studies revealed a karyotype of 45,XY,--C,--D,+t(C;D). A chromosome 11 and a 13 are involved in the formation of the translocation chromosome. The long arm of chromosome 13 is linearly attached to the end of the long arm of chromosome 11 (tandem translocation). Chromosome material of the distal part of the long arm of chromosome 11, as well as the short arm plus the centromere of chromosome 13 seem to have been lost.