51. Radioulnar Synostosis and Brain Abnormalities in a Patient With 17q21.31 Microdeletion Involving EFTUD2
- Author
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Yuri A. Zarate, G. Bradley Schaefer, and Carla Bell
- Subjects
medicine.medical_specialty ,Microcephaly ,Toe syndactyly ,medicine ,Humans ,Abnormalities, Multiple ,Craniofacial ,Ribonucleoprotein, U5 Small Nuclear ,Sequence Deletion ,business.industry ,Overlapping toe ,Infant, Newborn ,Brain ,Anatomy ,Mandibulofacial dysostosis ,medicine.disease ,Dysostoses ,Microarray Analysis ,Peptide Elongation Factors ,Surgery ,Phenotype ,Otorhinolaryngology ,Radioulnar synostosis ,Female ,Oral Surgery ,Haploinsufficiency ,business ,Mandibulofacial Dysostosis ,Chromosomes, Human, Pair 17 - Abstract
Mandibulofacial dysostosis with microcephaly is a rare syndromic craniofacial condition caused by heterozygous loss-of-function mutations of the EFTUD2 gene on 17q21.31. Thus far, the described musculoskeletal findings in patients with this condition include proximally placed or duplicated thumbs, overlapping toes, and toe syndactyly. We describe a severe case of a patient with a 17q21.31 microdeletion and many of the phenotypic features described in mandibulofacial dysostosis with microcephaly who had bilateral proximal radioulnar synostosis and brain abnormalities. This provides further evidence of the clinical overlap among mandibulofacial and acrofacial dysostoses syndromes and expands the phenotype of EFTUD2 haploinsufficiency due to larger deletions.
- Published
- 2014