Table 1.

Number of replicates with true discovery for the causal genes before and after PCA adjustment

Gene	Indicator method		Proportion method		Adaptive-sum test method
	Before PCA	After PCA	Before PCA	After PCA	Before PCA	After PCA
ARNT	0	0	0	0	0	0
ELAVL4	0	0	0	0	0	0
FLT1	33	12	33	12	67	15
FLT4	2	0	1	0	3	0
HIF1A	0	0	0	0	0	0
HIF3A	0	0	0	0	0	0
KDR	94	17	160	50	163	53
VEGFA	0	1	0	1	0	1
VEGFC	15	8	15	8	15	8