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Salpietro V, Ruggieri M, Mankad K, Di Rosa G, Granata F, Loddo I, Moschella E, Calabro MP, Capalbo A, Bernardini L, Novelli A, Polizzi A, Seidler DG, Arrigo T, Briuglia S. A de novo 0.63 Mb 6q25.1 deletion associated with growth failure, congenital heart defect, underdeveloped cerebellar vermis, abnormal cutaneous elasticity and joint laxity. Am J Med Genet A 2015; 167A:2042-51. [PMID: 25940952 DOI: 10.1002/ajmg.a.37118] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 02/20/2015] [Indexed: 11/09/2022]
Abstract
Deletions of the long arm of chromosome 6 are rare and are characterized by great clinical variability according to the deletion breakpoint. We report a on 6-year-old girl with a de novo 0.63 Mb deletion on chromosome 6q25.1 who demonstrated multiple congenital anomalies including a ventricular septal defect and an underdeveloped cerebellar vermis. She presented with severe pre- and post-natal growth failure, hyperextensible small joints (Beighton scores = 8/9; with normal parental scores), and an abnormally elastic, redundant skin. Abnormally high upper/lower segment ratio (i.e., 1.34 = > 3SD), mild dysmorphic facial features and developmental delay were also present. The girl's phenotype was compared with: (i) two girls, each previously reported by Bisgaard et al. and Caselli et al. with similar albeit larger (2.6-7.21 Mb) deletions; (ii) seven additional individuals (6 M; 1 F) harboring deletions within the 6q25.1 region reported in the literature; and (iii) ten further patients (5 M; 4 F; 1 unrecorded sex) recorded in the DECIPHER 6.0 database. We reported on the present girl as her findings could contribute to advance the phenotype of 6q deletions. In addition, the present deletion is the smallest so far recorded in the 6q25 region encompassing eight known genes [vs. 41 of Bisgaard et al., and 23 of Caselli et al.,], including the TAB2 (likely responsible for the girl's congenital heart defect), LATS1 gene, and the UST gene (a regulator of the homeostasis of proteoglycans, which could have played a role in the abnormal dermal and cartilage elasticity).
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Affiliation(s)
- Vincenzo Salpietro
- Department of Paediatric Neurology, Chelsea and Westminster Hospital, London, United Kingdom.,Unit of Genetics and Paediatric Immunology, Department of Paediatrics, University of Messina, Messina, Italy
| | - Martino Ruggieri
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Kshitij Mankad
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Gabriella Di Rosa
- Unit of Infantile Neuropsychiatry, Department of Paediatrics, University of Messina, Messina, Italy
| | - Francesca Granata
- Unit of Neuroradiology, Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Messina, Italy
| | - Italia Loddo
- Unit of Genetics and Paediatric Immunology, Department of Paediatrics, University of Messina, Messina, Italy
| | - Emanuela Moschella
- Unit of Genetics and Paediatric Immunology, Department of Paediatrics, University of Messina, Messina, Italy
| | - Maria Pia Calabro
- Unit of Pediatric Cardiology, Department of Paediatrics, University of Messina, Messina, Italy
| | - Anna Capalbo
- Institute of Medical Genetics, "CSS-Mendel" Institute, Rome, Italy
| | - Laura Bernardini
- Institute of Medical Genetics, "CSS-Mendel" Institute, Rome, Italy
| | | | - Agata Polizzi
- Institute of Neurological Sciences, National Research Council, Catania, Italy.,National Centre for Rare Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Daniela G Seidler
- Institute for Physiological Chemistry and Pathobiochemistry, University of Munster, Munster, Germany
| | - Teresa Arrigo
- Unit of Genetics and Paediatric Immunology, Department of Paediatrics, University of Messina, Messina, Italy
| | - Silvana Briuglia
- Unit of Genetics and Paediatric Immunology, Department of Paediatrics, University of Messina, Messina, Italy
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