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De novo inv del(4) in an infant with the Wolf-Hirschhorn syndrome
F Serville1, R Saura, C Billeaud
1Centre de Génétique, Hôpital Saint-Vincent de Paul, Paris.
Annales De Genetique
|January 1, 1987
Insights
A novel complex rearrangement involving chromosome 4 was identified in an infant. This genetic anomaly, specifically an inversion deletion, resulted in clinical features consistent with Wolf-Hirschhorn syndrome.
Area of Science:
- Genetics
- Human Molecular Genetics
- Developmental Biology
Background:
- De novo chromosomal rearrangements can lead to significant developmental abnormalities.
- The Wolf-Hirschhorn syndrome is a rare genetic disorder associated with deletions on the short arm of chromosome 4.
Observation:
- A female infant presented with clinical manifestations suggestive of Wolf-Hirschschorn syndrome.
- Karyotype analysis revealed a complex de novo rearrangement of chromosome 4.
Findings:
- The specific karyotype was determined as 46,XX,inv del(4)(pter::p16.3::q31.2----p15.2::q31.2----qter).
- This complex inversion deletion on chromosome 4 was directly linked to the observed Wolf-Hirschhorn syndrome phenotype.
Implications:
- This case highlights the importance of detailed cytogenetic analysis in diagnosing complex genetic disorders.
- Understanding such rearrangements contributes to genotype-phenotype correlations for Wolf-Hirschhorn syndrome.
- Further research into the mechanisms of complex chromosomal rearrangements is warranted.
Abstract:
An infant was found to have a de novo complex rearrangement of one chromosome 4. Her karyotype was interpreted as 46,XX,inv del(4)(pter::p16.3::q31.2----p15.2::q31.2----qter). Clinically she showed the features of the Wolf-Hirschhorn syndrome.