Familial tandem duplication of bands q31.1 to q32.3 on chromosome 4 with mild phenotypic effect.

Abstract excerpt

We describe a family carrying a direct duplication of an interstitial segment of the distal long arm of chromosome 4(q31.1q32.3) with a mild clinical phenotype. Affected family members include a 27-year-old woman and 2 of her 4 children, 1 of whom also has Klinefelter syndrome. Although 8 cases of simple duplications or insertions of 4q material have been described, only 3 include bands q31-q32, and these involve...

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