Trisomy 17p10-p12 due to mosaic supernumerary marker chromosome: delineation of molecular breakpoints and clinical phenotype, and comparison to other proximal 17p segmental duplications.

Abstract excerpt

The unstable, gene-rich chromosome region 17p11.2-p12 is associated with various structural aberrations including supernumerary marker chromosomes (SMCs). In some cases, SMC(17)s utilize the same substrates for recombination as the common recurrent 17p11.2 and 17p12 rearrangements. We report on a 9-year-old girl with a de novo mosaic SMC(17). The der(17) encompasses genetic material from 17p10-p11.2 and is...

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