Table 1

Breast cancer samples studied for mismatch repair errors

Tissue samples are classified according to histology.
Breast cancer tissuesNo. of samples studied for MSINo. of samples studied for intragenic single/trinucleotide instability
Infiltrating ductal15420
Ductal carcinoma in situ620
Infiltrating lobular1111
Mucinous (colloid)2222
Medullary88
Breast cancer cell lines30
Total26791