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Familial transmission of 16p trisomy in an infant
Human Genetics
|January 1, 1989
Insights
Trisomy 16p in infants presents with severe developmental delay and psychomotor retardation. Affected infants also exhibit characteristic facial features and limb anomalies, indicating a distinct genetic syndrome.
Area of Science:
- Genetics
- Pediatrics
- Developmental Biology
Background:
- Chromosomal abnormalities are a significant cause of congenital disorders.
- Trisomy, the presence of an extra chromosome, can lead to complex developmental phenotypes.
- Specific chromosomal regions, such as 16p, may harbor genes critical for normal development.
Observation:
- This report details a case of 16p trisomy in an infant.
- A review of four cases, including the current one, reveals consistent clinical features.
- The observed phenotype is characterized by significant developmental impairments.
Findings:
- Infants with 16p trisomy consistently display severe developmental delay.
- Psychomotor retardation is a hallmark feature in these infants.
- Distinct facial features (typical facies) and anomalies of the extremities are commonly observed.
Implications:
- 16p trisomy represents a recognizable genetic syndrome with a predictable phenotype.
- Early identification of 16p trisomy can aid in prognostication and management.
- Further research into the specific genes on 16p is warranted to understand the underlying mechanisms of these developmental anomalies.
Abstract:
Based on four reported cases including the present case, 16p trisomic infants have remarkably similar features. These are severe developmental delay, psychomotor retardation, typical facies, and anomalies of extremities.