Apparent SMA I unlinked to 5q

J. M. Cobben, H. Scheffer, M. de Visser, J. H. Begeer, W. M. Molenaar, G. van der Steege, C. H. Buys, G. J. van Ommen, L. P. ten Kate

Research output: Contribution to journalComment/Letter to the editorAcademic

11 Citations (Scopus)

Abstract

A proband with a clinical picture indistinguishable from SMA type I is described. The parents are second cousins. On DNA analysis it appeared that the proband and his healthy 2 year old sib had inherited the same haplotypes for DNA markers flanking the SMA locus on 5q. This supports non-linkage of SMA to chromosome 5q in this family. The consanguinity of the parents raises the possibility of a second locus for autosomal recessive SMA type I outside the 5q12-13 region. This may have implications for genetic counselling after prenatal diagnosis in consanguineous families. Furthermore, this case illustrates the importance of the inclusion of all healthy sibs in prenatal DNA studies for SMA type I
Original languageEnglish
Pages (from-to)242-244
JournalJournal of medical genetics
Volume31
Issue number3
DOIs
Publication statusPublished - 1994

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