Table 3.
Immunohistochemical patterns of mismatch repair deficiencies
Loss | Tumor |
|
---|---|---|
Primary | Metastatic | |
MLH1/PMS2 | 0 | 0 |
MSH2/MSH6 | 6 | 8 |
MSH6 only | 0 | 2 |
PMS2 only | 1 | 1 |
Combineda | 0 | 3 |
Combined: MSH6 + PMS2 (1 case), MLH1 + MSH6 + PMS2 (1 case), MSH2 + PMS2 (1 case).