Regions of homozygous deletion. (A) Loss of region containing the CDKN2A and CDKN2B genes. A continuous region containing CDKN2A and CDKN2B on chromosome 9 was deleted. (B) Partial loss in the PTEN gene. PTEN lost a part of its gene region. Weighted log ratio data appear as a scatter plot. Green points represent subthreshold values. The identified aberrant regions are plotted as a bar graph shaded in red, and the height of each bar corresponds to the average log ratio for that interval. (C) Deleted regions displayed on the UCSC Genome Browser. Black boxes represent the identified aberration Nos. 78 and 79, and lower row shows schematic structure of the RefSeq genes in this region.