American Association for Cancer Research

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Table 2

Distribution of the NQO1 polymorphism among lung cancer patients and controls by histological cell types

Histological cell type	n	NQO1 polymorphism (%)
Histological cell type	n			TT^a	CT^b	CC^c
Controls	1123	3.7	31	65
Cancer patients^d	814	2.9	32	65
Adenocarcinoma	390	2.6	30	68
Squamous carcinoma	217	4.2	35	61
Other^e	207	1.9	33	65

Histological cell type	n	NQO1 polymorphism (%)
Histological cell type	n			TT^a	CT^b	CC^c
Controls	1123	3.7	31	65
Cancer patients^d	814	2.9	32	65
Adenocarcinoma	390	2.6	30	68
Squamous carcinoma	217	4.2	35	61
Other^e	207	1.9	33	65

^a

Homozygous variant

^b

Heterozygous.

^c

Homozygous wild type.

^d

154 individuals had missing histological cell type data.

^e

Other refers to large cell, small cell, and mixed lung cancer histological subtypes.