Six cases of cryptic subtelomeric translocations in four families: the use of subtelomeric FISH probes as a diagnostic tool.

Abstract excerpt

Finding the diagnosis in children with mental retardation and a normal karyotype, whether or not associated with dysmorphic features, is important for defining an eventual syndrome and for genetic counselling of the families. Telomeric re-arrangements may be a common and underestimated-to-date cause of non-syndromic mental retardation. Using a FISH-based approach combining subtelomeric probes, we report the...

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