Case Control Study
Copyright ©The Author(s) 2021.
World J Gastrointest Oncol. Nov 15, 2021; 13(11): 1766-1780
Published online Nov 15, 2021. doi: 10.4251/wjgo.v13.i11.1766
Table 1 Difference in genotype distribution and allele frequencies of TGFBR2 rs3087465 polymorphism between the case (colorectal cancer patients) and control (healthy persons) groups, females and males, respectively
Genotype
CRC, n (%)
Healthy controls, n (%)
OR (95%CI)
P value
n184 (100)307 (100)
GG117 (63.6)193 (62.9)Reference
GA58 (31.5)102 (33.2)0.938 (0.631-1.393)0.751
AA9 (4.9)12 (3.9)1.237 (0.506-3.026)0.640
GA + AA67 (36.4)1140.969 (0.664-1.416)0.873
G allele292 (79.3)488 (79.5)Reference
A allele76 (20.7)126 (20.5)1.008 (0.732-1.387)0.961
Female69240
GG42 (40.9)159 (66.3)Reference
GA22 (31.9)72 (30)1.157 (0.664-2.079)0.626
AA5 (7.2)9 (3.7)2.103 (0.669-6.608)0.195
GA + AA27(39.1)81 (33.8)1.262 (0.726-2.193)0.409
GG vs GA + AA42 vs 27159 vs 810.792 (0.456-1.377)0.409
GA vs GG + AA22 vs 4772 vs 1681.092 (0.614-1.944)0.764
G allele106 (76.8)390 (81.3)Reference
A allele32 (23.2)90 (18.7)1.346 (0.794-2.281)0.269
Male11567
GG75 (65.2)34 (50.7)Reference
GA36 (31.3)30 (44.8)0.544 (0.289-1.023)0.058
AA4 (3.5)3 (4.5)0.604 (0.128-2.850)0.521
c 0.823
GA + AA40 (34.8)33 (49.3)0.549 (0.297-1.015)0.055
GG vs GA + AA75 vs 4034 vs 331.820 (0.985-3.362)0.055
GA vs GG + AA36 vs 7930 vs 370.562 (0.302-1.047)0.068
G allele186 (80.9)98 (73.1)Reference
A allele44 (19.1)36 (26.9)0.644 (0.389-1.066)0.086
Table 2 Genotype distributions and allele frequencies of TGFBR2 rs3087465 polymorphism in the case group divided into advanced and early colorectal cancer groups (and females and males, respectively)
TGFBR2 -875G/A (rs3087465)
Advanced CRC, n (%)
Early CRC, n (%)
OR (95%CI)
P value
Total n96 (52.2)88 (47.8)
GG64 (66.7)53 (60.2)Reference
GA29 (30.2)29 (33)0.828 (0.441-1.556)0.557
AA3 (3.1)6 (6.8)0.414 (0.099-1.735)0.216
c 0.373
GA + AA32 (33.3)35 (39.8)0.757 (0.415-1.382)0.365
G allele157 (81.8)135 (76.7)Reference
A allele35 (18.2)41 (23.3)0.734 (0.442-1.218)0.230
Female35 (36.5)34 (38.6)
GG22 (62.9)20 (58.8)Reference
GA12 (34.3)10 (29.4)1.091 (0.388-3.071)0.869
AA1 (2.9)4 (11.8)0.227 (0.023-2.207)0.171
c 0.370
GA + AA13 (37.1)14 (41.2)0.844 (0.321-2.222)0.731
G allele56 (80)50 (73.5)Reference
A allele14 (20)18 (26.5)0.694 (0.313-1.539)0.368
Male61 (63.5)54 (61.4)
GG42 (68.9)33 (61.1)Reference
GA17 (27.9)19 (35.2)0.703 (0.317-1.561)0.386
AA2 (3.3)2 (3.7)0.786 (0.105-5.878)0.814
c 1.000
GA + AA19 (31.1)21 (38.9)0.711 (0.329÷1.535)0.384
GG vs GA + AA42 vs 1933 vs 211.407 (0.651-3.038)0.384
G allele101 (82.8)85 (78.7)Reference
A allele21 (17.2)23 (21.3)0.768 (0.398÷1.484)0.432
Table 3 TGFBR2G[-875]A rs3087465 polymorphism distribution in early CRC cases compared to healthy controls
TGFBR2 -875G/A (rs3087465)
Early CRC, n (%)
Healthy controls, n (%)
OR (95%CI)
P value
Total n88 (47.8)307 (100)
GG53 (60.2)193 (62.9)Reference
GA29 (33)102 (33.2)1.035 (0.620-1.728)0.894
AA6 (6.8)12 (3.9)1.821 (0.653-5.080)0.246
GA + AA35 (39.8)1141.118 (0.688-1.817)0.652
G allele135 (76.7)488 (79.5)Reference
A allele41 (23.3)126 (20.5)1.176 (0.788-1.756)0.427
Female34 (38.6)240
GG20 (58.8)159 (66.3)Reference
GA10 (29.4)72 (30)1.104 (0.492-2.478)0.810
AA4 (11.8)9 (3.7)3.533 (0.996-12.535)0.039
c 0.103
GA + AA14 (41.2)81 (33.8)1.374 (0.660-2.861)0.394
G allele50 (73.5)390 (81.3)Reference
A allele18 (26.5)90 (18.7)1.560 (0.869-2.802)0.134
Male 54 (61.4)67
GG33 (61.1)34 (50.7)Reference
GA19 (35.2)30 (44.8)0.653 (0.309-1.379)0.262
AA2 (3.7)3 (4.5)0.687 (0.108-4.378)0.690
c 1.000
GA + AA21 (38.9)33 (49.3)0.656 (0.317-1.357)0.254
GG vs GA + AA33 vs 2134 vs 331.525 (0.737-3.156)0.254
G allele85 (78.7)98 (73.1)Reference
A allele23 (21.3)36 (26.9)0.737 (0.405-1.340)0.316
Table 4 TGFBR2G[-875]A rs3087465 polymorphism distribution in advanced CRC cases compared to healthy controls
TGFBR2 -875G/A (rs3087465)
Advanced CRC, n (%)
Healthy controls, n (%)
OR (95%CI)
P value
Total n96 (52.2)307 (100)
GG64 (66.7)193 (62.9)Reference
GA29 (30.2)102 (33.2)0.857 (0.520-1.414)0.546
AA3 (3.1)12(3.9)0.754 (0.206-2.756)0.668
c 0.940
GA + AA32 (33.3)1140.846 (0.522-1.373)0.499
GA vs GG + AA29 vs 67102 vs 2050.870 (0.530-1.429)0.582
G allele157 (81.8)488 (79.5)Reference
A allele35 (18.2)126 (20.5)0.863 (0.570÷1.308)0.488
Female 35 (36.5)240
GG22 (62.9)159 (66.3)Reference
GA12 (34.3)72 (30)1.205 (0.565-2.567)0.629
AA1 (2.9)9 (3.7)0.803 (0.097-6.647)0.839
c 1.000
GA + AA13 (37.1)81 (33.8)1.160 (0.556-2.421)0.693
G allele56 (80)390 (81.3)Reference
A allele14 (20)90 (18.7)1.083 (0.578-2.032)0.803
Male 61 (63.5)67
GG42 (68.9)34 (50.7)Reference
GA17 (27.9)30 (44.8)0.459 (0.217-0.969)0.039
AA2 (3.3)3 (4.5)0.540 (0.085-3.417)0.507
c 0.841
GA + AA19 (31.1)33 (49.3)0.466 (0.226-0.961)0.037
GG vs GA + AA42 vs 1934 vs 332.146 (1.041-4.422)0.037
GA vs GG + AA17 vs 4430 vs 370.477 (0.228-0.997)0.047
G allele101 (82.8)98 (73.1)Reference
A allele21 (17.2)36 (26.9)0.566 (0.309-1.037)0.064