Fig 1.

Participant genotypes shown as custom tracks on the UCSC Genome Browser. The box (red) on the chromosome 18 ideogram at the top of the figure indicates the region depicted below. The bars (light blue) to the right of the participant study numbers indicate the region of chromosome 18 present in 2 copies with the breakpoint region indicated by the darker bar (dark blue). The darker (red) bar for participant 18q-62C indicates the region present in 3 copies. The locations of the UCSC genes are shown across the bottom of the figure. To the left of each individual’s genotype is the parental origin of the chromosome with the deletion. M = maternal chromosome, P = paternal chromosome and U = unknown