| _N | Nuclear |
| _C | Cytoplasmic |
| _S | Immunoreaction intensity score |
| _P | Percentage of cells stained |
| _SxP | Multiplication of immunoreaction intensity score with percentage of cells stained |
| _SxP_irs | International immunoreactive score |
| _SxP_irs_c | Categorized international immunoreactive score |