Figure 3.
MYC protein expression in cases that differ in MYC and chromosome 8 copy number and correlated to MYC messenger RNA (mRNA) and patient overall survival. The percent MYC protein positive cells as determined by immunohistochemistry was compared among the 3 different MYC and chromosome 8 copy number groups using a 1-way analysis of variance (A). MYC protein positive and negative cases were evaluated for level of MYC mRNA (log2 transformed) (B). Lines represent the mean. A case was defined as positive for MYC protein if at least 40% of cells were stained within a 300-cell count. The Mann-Whitney 2-tailed t test was used to determine significance.