Table 3.

Correlation of grade and CDH1 gene mutation.

Grade	CDH1 mutation positive (%)	CDH1 mutation negative (%)	Pearson chi-square test
Grade 1	2 (50%)	2 (50%)	P = 0.40
Grade 2	8 (53.3%)	7 (46.67%)
Grade 3	5 (83.3%)	1 (16.67%)