of the breakpoint at the base-pair level (sample No.14) (Figure 7). As for the minimum size in base pairs of copy number changes that can be identified, this is limited only by the resolution and coverage of the SNPs on the arrays. Overall, the SNP array-based approach performed well in the identification of segmental aneuploidy events which makes these platforms a viable and efficient complementary technology to classic karyotyping for molecular characterization of patient samples.