Score

Staining pattern

Score 0

Negative, none of the cells revealed positivity for the marker.

Score 1+

Weak or mild staining, (5% - 10%) positive of tumor cells.

Score 2+

Moderate staining, less than 25% of tumor cells are stained positive.

Score 3+

Strong staining, (25% - 50%) of tumor cells are stained positive.

Score 4+

Highly strong staining, over 50% of tumor cells are stained positive.