p53 Immunohistochemistry Patterns Are Surrogate Biomarkers for TP53 Mutations in Gastrointestinal Neuroendocrine Neoplasms

Table 2

Comparison between p53 IHC staining patterns and TP53 mutation status in 92 GI-NEN cases.

IHC staining patterns	Mutation status		value
	Wild-type	Mutant type
Pattern types
Pattern A	2	11	<0.001
Pattern B	33	2
Pattern C	3	41
Binary classification
Wild-type pattern	33	2	<0.001
Mutant pattern	5	52