Table 6.

 O⁶-methylguanine methyltransferase (MGMT) expression and low level microsatellite instability (MSI low) in fresh frozen cancers, excluding MSI high tumours

	MGMT expression		Total
	Undetectable/reduced	Normal
MSI low	29	13	42
Non-MSI low	15	2	17
Total	44	15	59

Note that MSI low cannot be scored in the cell lines owing to lack of constitutional DNA.

For this analysis, p = 0.11 (Fisher’s exact test).