. 2015 Jul 25;34(1):70. doi: 10.1186/s13046-015-0185-y

Table 6.

Stratification analysis to evaluate the association of HPV positive patients with TAP1 polymorphisms in Kazakh ESCC by tumor depth

Parameters	TAP1 D637G (HPV⁺/HPV^- patients)		OR (95 % CI)	TAP1 I333V (HPV⁺/HPV^- patients)		OR (95 % CI)
Parameters	AA^a	AG/GG	OR (95 % CI)	AA^a	AG/GG	OR (95 % CI)
Tumor depth
T1/T2	21/16	13/35	0.283 (0.114–0.703)**	23/27	11/24	0.538 (0.218–1.330)
T3/T4	27/9	14/15	0.311 (0.109–0.888)*	21/11	20/13	0.806 (0.294–2.212)
T1-T4	48/25	48/25	0.281 (0.144–0.551)***	44/38	31/37	0.724 (0.380–1.380)

“*”represents P < 0.05, “**”indicates P < 0.01, “***”depicts P < 0.001

^aReference group. We consider the common homozygotes of TAP1 as ORs of 1.00 for the reference genotype