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Partial trisomy 20q in a newborn with dextrocardia
M C Addor1, C Castagne, J L Micheli
1Division of Medical Genetics, CHUV, Lausanne, Switzerland. Marie-Claude.Addor@chuv.hospvd
Genetic Counseling (Geneva, Switzerland)
|February 1, 2003
Summary
This report details a rare case of partial trisomy 20q in a newborn female, characterized by dextrocardia and distinct facial features. The study reviews similar rare chromosomal anomalies in previously reported patients.
Area of Science:
- Genetics
- Developmental Biology
- Pediatrics
Background:
- Partial trisomy 20q is a rare chromosomal abnormality.
- Paternal translocation t(2;20) can lead to partial trisomy 20q.
- This condition presents with a specific set of congenital anomalies.
Observation:
- A female newborn presented with dextrocardia (heart defect).
- Distinctive facial features were observed, including brachycephaly, bulging forehead, deep-set eyes, short nose, large ears, dimpled chin, and short neck.
- The condition was derived from a paternal translocation, specifically t(2;20).
Findings:
- The primary finding is the co-occurrence of dextrocardia and partial trisomy 20q.
- The specific translocation t(2;20) was identified as the source of the partial trisomy 20q.
- A constellation of dysmorphic features accompanies this rare chromosomal anomaly.
Implications:
- This case contributes to the understanding of partial trisomy 20q and its phenotypic spectrum.
- Early identification of this rare condition is crucial for timely intervention and management.
- Further research into the genetic mechanisms and long-term outcomes of trisomy 20q is warranted.