FISH characterization of two supernumerary r(1) associated with distinct clinical phenotypes.

Abstract excerpt

Only a few reports on supernumerary r(1) chromosomes associated with a clinical phenotype have been published. We describe two unrelated patients with congenital malformations and developmental delay who were found to have a de novo supernumerary r(1) in 50% (Case 1) and 80% (Case 2) of the examined cells. Conventional cytogenetic techniques (QFQ, CBG, and DA-DAPI), complemented by fluorescence in situ...

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