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. 2002 Aug;12(6):544-7.
doi: 10.1016/s0960-8966(01)00338-8.

Welander distal myopathy outside the Swedish population: phenotype and genotype

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Welander distal myopathy outside the Swedish population: phenotype and genotype

Désirée von Tell et al. Neuromuscul Disord. 2002 Aug.

Abstract

Welander distal myopathy is a late onset disorder that is mainly seen in Sweden. It is linked to chromosome 2p13 and all Swedish patients show a common shared haplotype, indicating a founder mutation. Here we report the clinical manifestations, magnetic resonance imaging, pathophysiology and haplotype analysis of Welander patients in the Finnish population. The clinical examination of patients from 12 different families showed a distal myopathy with onset in the long extensor muscles of the hands and fingers, also seen in Swedish Welander patients. Muscle biopsies showed characteristic myopathic changes. Haplotype analysis with the five polymorphic markers that make up the common core haplotype, seen in the Swedish patients, revealed that this haplotype is also co-segregating in the Finnish patients and a common ancestry is therefore further supported for patients with Welander distal myopathy.

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