De novo del(7)(pter----p21.2::p15.2----qter) and craniosynostosis. Implications for critical segment assignment in the 7p2 monosomy syndrome
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Annales De Genetique
|January 1, 1986
Insights
A deletion on chromosome 7p21 causes 7p21 monosomy syndrome, characterized by craniosynostosis. This specific chromosomal region is critical for the syndrome's full clinical presentation.
Area of Science:
- Genetics
- Human Chromosome Syndromes
- Developmental Biology
Background:
- 7p21 monosomy syndrome is a rare genetic disorder.
- Craniosynostosis is a primary feature of this syndrome.
Observation:
- A 4-year-old boy presented with typical 7p21 monosomy syndrome.
- The patient had a de novo deletion on chromosome 7: del(7)(pter----p21.2::p15.2----qter).
Findings:
- The deletion involved the 7p21 band, specifically sub-band p21.1.
- This critical segment is essential for the full clinical manifestation of 7p21 monosomy.
Implications:
- Identifies the critical chromosomal region for 7p21 monosomy syndrome.
- Aids in understanding genotype-phenotype correlations in chromosomal abnormalities.
- Informs genetic counseling and diagnostic approaches for similar cases.
Abstract:
A 4 year-old boy was found to have a typical 7p2 monosomy syndrome, including craniosynostosis, due to a de novo del(7)(pter----p21.2::p15.2----qter). It is concluded that the band 7p21 (probably only the subband p21.1) is the critical segment for the full clinical expression of this aneusomy.