Mapping of the recurrent 2p11.2 microdeletion (A) Array CGH plots from five UAB kindreds (A to E) with 2p11.2 microdeletions, which are flagged in red. The smallest region of overlap (SRO) is represented by the dashed line box. (B) Genomic map of the recurrent 2p11.2 microdeletion region generated using the University of California at Santa Cruz (UCSC) genome browser. Tracks shown from top to bottom include genomic ruler, cytogenetic band, OMIM genes, UCSC and RefSeq genes, UAB 2p11.2 microdeletion patients (red bars), DECIPHER patients with either 2p11.2 microdeletions or microduplications (red bars represent deletions, blue bars represent duplications, and gray bars represent either deletions or duplications), and segmental duplication clusters (named ‘Duplications of >1000 Bases of Non-Repeat Masked Sequence’ and identified by the dashed line boxes). The SRO is represented by the blue shaded area.