We describe a child with โฃ-thalassemia ascertained by newborn screening. Evaluation at 9 months of age showed minor anomalies and developmental delay. Chromosomal analysis demonstrated a de novo deletion of the most distal portion of the short arm of chromosome 16, which contains the โฃ-globin genes.
Deletion 8p syndrome
โ Scribed by Digilio, Maria Cristina; Marino, Bruno; Guccione, Paolo; Giannotti, Aldo; Mingarelli, Rita; Dallapiccola, Bruno
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 21 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0148-7299
- DOI
- 10.1002/(sici)1096-8628(19980217)75:5<534::aid-ajmg15>3.0.co;2-l
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โฆ Synopsis
The number of patients heterozygous for terminal deletion of the short arm of chromosome 8 (del8p) has increased progressively in parallel with the improved ability of cytogenetic techniques to recognize small imbalances. A del(8p) syndrome has been outlined. We reported a consistent association with atrioventricular canal (AVC) [Marino et al., 1992;Digilio et al., 1993], and have evaluated 6 additional children with del(8p). Personal observations support and expand the del(8p) syndrome phenotype (Tables I andII).
GROWTH IMPAIRMENT
Low birth weight was present in about 2/3 of patients, while half of them showed subsequent slow growth. This was quite a common finding in children with larger deletions, while it was absent in those with the most terminal deletions. Microcephaly was found in 6 of 8 patients. Contrary to previous inference, microcephaly was present not only in patients with deletion of 8p21-p22, but also in 2 children with del(8) (p23).
FACIAL ANOMALIES
Minor facial anomalies were documented in all patients, and included epicanthal folds, microstomia, and apparently low-set and malformed ears. However, facial appearance was considered grossly normal in patients with terminal deletions.
CHEST
Short neck with redundant nuchal skin, broad chest, and wide-set nipples were recorded in about 1/2 of patients.
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