On the variability of the Brachmann‐de Lange syndrome in seven patients

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Abstract
The results of the clinical and radiographic study of 7 patients support the view of a unimodal and rather narrow phenotypic spectrum in the Brachmann‐de Lange syndrome (BDLS) and reject the existence of a “classic” type of patient and a “mild phenotype” without upper limb defects who survive with moderate to severe mental retardation. Similarity among all patients is greater than their phenotypic differences. Strict clinical definition of the syndrome warrants easier access to the still unknown cause, most probably a single gene mutation with autosomal dominant inheritance.

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