Table IV.

Evaluation of IHC for CDX2 and p53 in differentiated and undifferentiated gastric cancer.

A, Negative CDX2 expression
Expression	Differentiated	Undifferentiated	P-valuea
Positive p53 expression	27	21	0.021
Negative p53 expression	21	41
B, Positive CDX2 expression
Expression	Differentiated	Undifferentiated	P-valuea
Positive p53 expression	37	19	0.678
Negative p53 expression	27	17

^aP value from Fisher's exact test. CDX2, caudal-type homeobox protein 2.