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De novo balanced reciprocal translocation 46,XY,t(6;8)(q13;q22)
Journal of Medical Genetics
|April 1, 1977
Insights
A balanced reciprocal translocation between chromosomes 6 and 8 was identified in an infant with minor malformations. Subsequent developmental assessment revealed normal cognitive function at 17 months of age.
Area of Science:
- Human Genetics
- Developmental Biology
- Clinical Pediatrics
Background:
- Genetic translocations can lead to developmental abnormalities.
- Balanced reciprocal translocations involve an exchange of segments between non-homologous chromosomes.
- Early identification of chromosomal abnormalities is crucial for monitoring development.
Observation:
- A 5-month-old infant presented with minor multiple malformations.
- Karyotyping revealed a de novo balanced reciprocal translocation: 46,XY,t(6;8)(q13;q22).
Findings:
- The infant's karyotype indicated a balanced chromosomal rearrangement without apparent loss or gain of genetic material.
- Follow-up at 17 months showed the infant's mental development was within normal limits.
Implications:
- This case highlights that de novo balanced reciprocal translocations may not always result in significant developmental deficits.
- Further research is needed to understand the long-term outcomes associated with specific translocation breakpoints.
- Genetic counseling and monitoring are essential for families with chromosomal abnormalities.
Abstract:
A 5-month-old infant was examined because of minor multiple malformations. He was found to have a de novo blanced reciprocal translocation 46,XY,t(6;8(q13;q22). On follow-up at the age of 17 months his mental development was found to be within normal limits.