In the patient sample, 13% of the cells contained 2 red (R=CDKN2A) and 2 green (G=chromosome 9 centromere) (2R2G in Figure 4B) that are found in normal cells, most patient tumor cells (87%) exhibited homozygous deletion either with disomy chromosome 9 (0R2G) (51%) or trisomy 9 (0R3G) (17.5%). The gene discussed is CDKN2A; the disease is neoplasm.