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Am J Med Genet A. 2005 Apr 1;134A(1):80-3.

Partial trisomy 2q: report of a patient with dup (2)(q33.1q35).

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  • 1Genetic Counseling Program, Department of Analytical and Diagnostic Sciences, College of Allied Health Sciences, University of Cincinnati, Cincinnati, Ohio, USA.


The partial trisomy 2q phenotype has been well described in the literature, primarily through cases of unbalanced translocations. While these reports contributed to the initial delineation of the phenotype, reports of de novo duplications are valuable in that they exist in the absence of an accompanying monosomy. We describe a 16-month-old female with a de novo duplication of 2q from bands q33.1 to q35. The clinical findings of this patient include a congenital heart defect, dysmorphic facial features, hypotonia, feeding difficulties, and developmental delay. In contrast to most reported individuals with trisomy 2q, this patient demonstrates only mild developmental delays. We compare our findings with other case reports of partial trisomy 2q.

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