[Genetic counseling and prenatal diagnosis in mitochondrial diseases].

Abstract excerpt

Since mitochondrial diseases lead frequently to severe phenotypes and are often hereditary, there is a need for genetic counselling of the affected families. The specific features of mitochondrial genetics, however, hamper straightforward definition of recurrence risks as in Mendelian diseases. Empirical risks were recently provided for MELAS and MERRF syndromes and for Leber hereditary optic neuropathy. In MELAS...

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