J Child Orthop. 2007 Jul;1(2):143-50. doi: 10.1007/s11832-007-0022-8. Epub 2007 May 10.
The spectrum of hand and foot malformations in patients with Greig cephalopolysyndactyly.
Journal of children's orthopaedics
Philippe Debeer, Koen Devriendt, Luc De Smet, Thomy Deravel, Antonio Gonzalez-Meneses, Karl-Heinz Grzeschik, Jean-Pierre Fryns
Affiliations
Affiliations
- Division of Orthopaedics, Department of Musculoskeletal Science, University Hospital Pellenberg, Weligerveld 1, 3212, Pellenberg, Belgium, [email protected].
PMID: 19308487
PMCID: PMC2656707 DOI: 10.1007/s11832-007-0022-8
Abstract
PURPOSE: Greig cephalopolysyndactyly (GCPS) (OMIM 175700), a rare autosomal dominant disorder, is characterized by a distinct combination of craniofacial, hand and foot malformations. The hand and foot malformations often require orthopedic assessment and treatment. The disorder is caused by point mutations or deletions in the GLI3 gene, located on chromosome 7p14.3. Herewith, we review the hand and foot malformations in a cohort of 13 patients referred for genetic testing.
METHODS: We reviewed the medical files of 13 patients with GCPS seen at the Center for Human Genetics in Leuven between 2003 and 2005. Clinical, molecular and radiological findings, when available, were recorded.
RESULTS: We identified six different point mutations in the GLI3 gene, two microdeletions and three larger chromosomal deletions. In the hands, preaxial polydactyly was never observed, but the malformations included postaxial polydactyly, broad thumbs, clinodactyly of the thumbs and various degrees of syndactyly. In the feet the spectrum of malformations included preaxial polydactyly, postaxial polydactyly, different degrees of syndactyly and broad halluces. Syndactyly of the toes and hallux abnormalities were present in all patients. Most frequently, syndactyly was present between toes 1-2-3. The broadening of the hallux was either due to a complete or partial duplication of the first toe or to broadening of the distal phalanx. Mental retardation was found in three cases and was associated with a large chromosomal deletion of the GLI3 region.
CONCLUSION: We found the classic hand and foot malformations associated with GCPS in our cohort of patients. Patients with a large chromosomal deletion had mental retardation, but no structural brain anomalies were found.
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