Raf kinase inhibitor protein combined with phosphorylated extracellular signal-regulated kinase offers valuable prognosis in gastrointestinal stromal tumor

Table 2 Correlations among proteins expression

Protein expressions	Negative	P-ERK positive	Correlation and P value	Negative	P-MEK positive	Correlation and P value
RKIP
Negative	3	26	Ca = -0.575	11	18	C = -0.323
Positive	25	12	P < 0.001	26	11	P = 0.008

^aC: Correlation coefficient value is calculated using Spearman‘s rho test, P < 0.05 were considered statistically significant.

P-ERK: Phosphorylated-extracellular-signal regulated kinase; P-MEK: Phosphorylated-mitogen-activated protein kinase\ERK kinase; RKIP: Raf kinase inhibitory protein.