Table 4

PMS2 and MLH1 staining

hMLH1PMS2
0/+a+0/0Total
hMLH1 mutation
 0/+a211123
 +516
 +/++33
 0/033
No hMLH1 mutation
 0/+55
 +318122
 0/033
Mutation status unknown
 0/+13114
 +82332243
 0/02518
Total632625330
  • a Staining results: +, nuclear staining; +/++, internal control is stronger than the positive tumor cells; 0/+, negative with a positive internal control; 0/0, tumor and internal control stain negative.