Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0038379 (strabismus)
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A 10(6/12)-year-old boy was referred to the genetics department because of mental retardation and dysmorphic findings including microcephaly, flat face, down-slanting palpebral fissures, strabismus, prominent ears, bulbous nasal tip, down-turned corners of the mouth, narrow palate, clinodactyly of the fifth fingers and generalised eczema. Cytogenetic analysis revealed a karyotype of 47,XY,+mar of paternal origin. Multicolour FISH showed the marker chromosome to be derived from chromosome 15. For further elucidation of the phenotype, array-based comparative genomic hybridisation (aCGH) was performed, which revealed dup(5)(q35.2qter) and del(1)(p36.3). Parental FISH analysis revealed that the translocation occurred de novo. Despite the presence of a clinical phenotype along with a microscopically visible chromosomal aberration, a complex cryptic cytogenetic abnormality was causative for the phenotype of the patient. Elucidation of this complex aberration required combination of the whole cytogenetic toolbox.
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PMID:Cryptic trisomy 5q35.2qter and deletion 1p36.3 characterised using FISH and array-based CGH. 1844 Aug 88