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A patient carrying a de novo 7q31-35 duplication is presented. The tandem duplication was confirmed by FISH analysis. The case seems to be the first in the literature and, in spite of the large size of the duplicated region, he shows mild facial dysmorphism and a moderate mental retardation. The clinical findings of the dup7q published cases are compared in order to define a possible common phenotype.
RNA single-strand conformation polymorphism (rSSCP) is a recently developed method for detecting genetic defects. This technique requires DNA amplification with a polymerase chain reaction making use of one T7 promoter-containing primer. Amplification products are subsequently transcribedin vitroand the labelled transcripts are analysed for single-strand conformation changes. rSSCP has been applied...
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