To date, approximately 30 patients have been described with a tetrasomy 9p, all being caused by the presence of an isochromosome 9p. We now report on a 3-year-old boy with a de novo intrachromosomal triplication of 9p13-p22, resulting in partial tetrasomy 9p. We compared his phenotype with cases of
Deletion (9) (p13.1 p21.1)
โ Scribed by Scaglia, Fernando; Bodamer, Olaf A.F.; Berend, Sue Ann; Adam, Louise R.; Shaffer, Lisa G.
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 18 KB
- Volume
- 91
- Category
- Article
- ISSN
- 0148-7299
- DOI
- 10.1002/(sici)1096-8628(20000313)91:2<113::aid-ajmg6>3.0.co;2-w
No coin nor oath required. For personal study only.
โฆ Synopsis
We report on a 22-month-old girl with minor facial anomalies, global developmental delay, growth retardation, seizures, and leukoencephalopathy. Initial clinical assessment suggested the diagnosis of Williams syndrome. Results of fluorescence in situ hybridization testing for elastin were normal. However, chromosome analysis showed a 46,XX,del(9)(p13.1p21.1) karyotype in peripheral lymphocytes. Parental chromosomes were normal, indicating a de novo deletion. This patient's manifestations are compared with those of two other cases with overlapping deletions of the proximal short arm of chromosome 9. Am.
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