The expression of mismatched repair genes and their correlation with clinicopathological parameters and response to neo-adjuvant chemotherapy in breast cancer

Table 7 MLH1

SCORE	Percentage of cells staining	Frequency	Percent	Valid percent	Cumulative percent
0	0%	13	41.93	41.93	41.93
1	<5%	0	0	0	41.93
2	5–20%	4	12.90	12.90	54.83
3	20–80%	14	45.16	45.16	100
4	80–100%	0	0	0

Of the 18 cases staining positive 14 had staining in more than 80 % of cells. This result correlated well with the results of H-scoring.