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Summary
This study reports the first known case of a male infant with both trisomy 13 and an XYY chromosome complement. This rare genetic condition combines features of Patau syndrome and XYY syndrome.
Area of Science:
- Genetics
- Human Chromosomal Abnormalities
- Pediatric Medicine
Background:
- Trisomy 13 (Patau syndrome) is a severe genetic disorder characterized by intellectual disability and multiple congenital anomalies.
- XYY syndrome (47,XYY karyotype) is a sex chromosome abnormality in males, typically associated with taller stature and sometimes learning difficulties.
Observation:
- A liveborn male infant presented with the characteristic physical features of trisomy 13.
- Karyotype analysis revealed a novel combination of trisomy 13 and an XYY karyotype (48,XYY,+13).
Findings:
- This case represents the first documented instance of co-existing autosomal trisomy 13 and gonosomal XYY aneuploidy.
- The infant exhibited a complex genetic profile, merging two distinct chromosomal disorders.
Implications:
- This finding expands the known spectrum of chromosomal abnormalities in humans.
- Further research is needed to understand the phenotypic impact and developmental outcomes of this combined genetic condition.