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. 1986 Nov 22;293(6558):1353–1356. doi: 10.1136/bmj.293.6558.1353

Application of a closely linked polymorphism of restriction fragment length to counselling and prenatal testing in families with myotonic dystrophy.

A L Meredith, S M Huson, P W Lunt, M Sarfarazi, H G Harley, J D Brook, D J Shaw, P S Harper
PMCID: PMC1342063  PMID: 2878705

Abstract

The close genetic linkage between the loci for apolipoprotein CII (ApoC2) and myotonic dystrophy makes ApoC2 the closest fully validated marker for prediction of myotonic dystrophy. Application to genetic counselling and presymptomatic and prenatal prediction is reported in seven families with myotonic dystrophy, including one case in which the disorder was excluded prenatally. Only one of the families did not have members with ApoC2 genotypes that allowed prediction, but careful clinical study of older family members was found to be an important factor. ApoC2 typing of families with myotonic dystrophy should be of practical help both in prediction for asymptomatic relatives and for prenatal diagnosis in pregnancies of an affected parent.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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