Retrospective Cohort Study
Copyright ©The Author(s) 2021.
World J Gastroenterol. Sep 14, 2021; 27(34): 5737-5752
Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5737
Table 3 Clinical characteristics of colorectal cancer patients and MTNR1B genotypes (rs10830963 and rs1447352)
VariablesTotalrs10830963 (C>G)
rs1447352 (A>G)
CC (%)
CG (%)
GG (%)
P value
CC + CG (%)
P value
GG (%)
GA (%)
AA (%)
P value
GG + GA (%)
P value
Sex
Male39 (41.5)7 (33.3)22 (44.9)10 (43.5)0.6629 (41.4)1.004 (66.7)16 (43.2)19 (38.0)0.4020 (46.5)0.53
Female55 (58.5)14 (66.7)27 (55.1)13 (56.5)41 (58.6)2 (33.3)21 (56.8)31 (62.0)23 (53.5)
Age at surgery
mean ± SD (yr)64.2 ± 13.867.0 ± 14.061.4 ± 13.966.8 ± 13.10.1663.1 ± 14.00.2669.7 ± 14.164.4 ± 14.063.0 ± 13.80.5365.1 ± 14.00.47
< 6550 (53.2)11 (52.4)28 (57.1)11 (47.8)0.7539 (55.7)0.633 (50.0)18 (48.6)29 (58.0)0.6821 (48.8)0.41
≥ 6544 (46.8)10 (47.6)21 (42.9)12 (52.2)31 (44.3)3 (50.0)19 (51.4)21 (42.0)22 (51.2)
Stage
I12 (12.8)2 (9.5)6 (12.2)4 (17.4)0.568 (11.4)0.300 (0)4 (10.8)8 (16.0)0.544 (9.3)0.60
II34 (36.2)8 (38.1)18 (36.7)7 (30.4)26 (37.1)1 (16.7)15 (40.5)17 (34.0)16 (37.2)
III30 (31.9)9 (42.9)16 (32.7)5 (21.7)25 (35.7)4 (66.7)12 (32.4)14 (28.0)16 (37.2)
IV18 (19.1)2 (9.5)9 (18.4)7 (30.4)11 (15.7)1 (16.7)6 (16.2)11 (22.0)7 (16.3)
Adjuvant chemotherapya
No 23 (24.5)5 (23.8)12 (25.5)6 (30.0)0.9017 (25.0)0.771 (16.7)8 (22.2)14 (30.4)0.619 (21.4)0.47
Yes 65 (69.1)16 (76.2)35 (74.5)14 (70.0)51 (75.0)5 (83.3)28 (77.8)32 (69.6)33 (78.6)
Tumor locationa
Colon74 (78.7)20 (95.2)41 (87.2)13 (65.0)0.0261 (89.7)0.016 (100)34 (94.4)34 (73.9)0.0240 (95.2)< 0.001
Rectum14 (14.9)1 (4.85)6 (12.8)7 (35.0)7 (10.3)0 (0)2 (5.6)12 (26.1)2 (4.8)
CDKN2A gene
Unmethylation43 (45.7)12 (57.1)17 (34.7)13 (56.5)0.1029 (41.4)0.314 (66.7)16 (43.2)22 (44.0)0.5520 (46.5)0.97
Methylation 51 (54.3)9 (42.9)32 (65.3)10 (43.5)41 (58.6)2 (33.3)21 (56.8)28 (56.0)23 (53.5)
MLH1 gene
Unmethylation77 (81.9)18 (85.7)39 (79.6)19 (82.6)0.8357 (81.4)1.005 (83.3)31 (83.8)40 (80.0)0.9036 (83.7)0.79
Methylation 17 (18.1)3 (14.3)10 (20.4)4 (17.4)13 (18.6)1 (16.7)6 (16.2)10 (20.0)7 (16.3)
MGMT gene
Unmethylation46 (48.9)8 (38.1)26 (53.1)12 (52.2)0.5034 (48.6)0.954 (66.7)18 (48.6)24 (48.0)0.6822 (51.2)0.92
Methylation 48 (51.1)13 (61.9)23 (46.9)11 (47.8)36 (51.4)2 (33.3)19 (51.4)26 (52.0)21 (48.8)
Death in 5 yr
No 76 (80.9)19 (90.5)43 (87.8)13 (56.5)< 0.00162 (88.6)< 0.0016 (100)33 (89.2)36 (72.0)0.0639 (90.7)0.03
Yes 18 (19.1)2 (9.5)6 (12.2)10 (43.5)8 (11.4)0 (0)4 (10.8)14 (28.0)4 (9.3)