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Hum Genet. 1991 Jun;87(2):151-4.

Partial 3q duplication syndrome and assignment of D3S5 to 3q25-3q28.

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  • 1Department of Medical Genetics, University of Groningen, The Netherlands.


We report a girl with a de novo duplication of the distal part of the long arm of chromosome 3 and review the literature. Our patient had the facial characteristics and many other anomalies of the partial 3q duplication syndrome. As a hitherto undescribed symptom in partial 3q trisomy syndrome, she had microphthalmia. The karyotype of this girl was interpreted as an inverse duplication of the terminal portion of chromosome 3: 46,XX,inv dup (3)(pter-q28::q28-q25::q28-qter). Quantitative hybridisation studies with 3p and 3q probes gave a consistent 3:2 ratio of the relative intensities of the q bands in relation to the p bands between patient and control. This confirmed the presence of a 3q duplication and delineated the location of D3S5 to 3q25-3q28.

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