Table 5.

Distribution of “high” and “low” expresser of ER, PR, HER2, and KRT5/17 between dasatinib-responder and nonresponder breast tumor groups predicted by the six-gene predictor

Gene	Expression level *	Predicted nonresponder (80)	Predicted responder (54)	χ² test (P)
HER2	H	46	21	0.035
HER2	L	34	33
ER	H	47	20	0.014
ER	L	33	34
PR	H	45	22	0.078
PR	L	35	32
KRT 5/17	H	28	31	0.010
KRT 5/17	L	52	23

↵* The median expression level of a gene across the 134 tumors was used to define “high” (H) or “low” (L) expression. A tumor was designated as “L” if its expression was below the median level and designated as “H” if its expression was above the median.