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Sindrome di Werdnig-Hoffmann familiare che include una coppia di gemelli MZ concordanti (un caso di Consulenza Eugenica)

Published online by Cambridge University Press:  01 August 2014

L. Gedda
Affiliation:
Istituto di Genetica Medica e di Gemellologia «Gregorio Mendel»- Roma
G. Del Porto
Affiliation:
Istituto di Genetica Medica e di Gemellologia «Gregorio Mendel»- Roma
A. Del Porto-Mercuri
Affiliation:
Istituto di Genetica Medica e di Gemellologia «Gregorio Mendel»- Roma

Summary

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The Authors report the eugenic prediction formulated for a couple whose three babies (two of whom were monozygotic twins) had died as a consequence of the syndrome of Werdnig-Hoffmann. Since the two cases of the MZ twin pair represent a single chance combination at conception, and since the indications from the literature and from the family tree in this case indicate a monomeric genotype of a recessive type, the morbid risk for a fourth affected child has been estimated at 25%.

The occurrence of concordant W. H. syndrome in MZ cotwins is stressed.

No chromosome abnormalities have been revealed by karyotype examination of the parents.

Type
Research Article
Copyright
Copyright © The International Society for Twin Studies 1962

References

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