Retrospective Study
Copyright ©The Author(s) 2020.
World J Gastroenterol. Jul 28, 2020; 26(28): 4140-4150
Published online Jul 28, 2020. doi: 10.3748/wjg.v26.i28.4140
Table 1 Analysis of correlation between insulin receptor substrate 1 expression and clinicopathologic features, n (%)
Clinicopathological featuresIRS-1 expressionP Fisher exact test
Weak (0), n = 66Strong (1+, 2+), n = 61
Age (yr)≤ 60 (n = 42)22 (33.8)20 (33.3)0.552
> 60 (n = 83)43 (66.2)40 (66.7)
GenderMale (n = 70)37 (56.1)33 (54.1)
Female (n = 56)28 (42.4)28 (45.9)
Tumor LocalizationRectum (n = 57)33 (50.8)24 (39.3)0.134
Colon (n = 69)32 (49.2)37 (60.7)
Histological TypeaA (n = 104)46 (69.7)58 (95.1)< 0.001
MA (n = 23)20 (30.3)3 (4.9)
Histological differentiationaG2 (n = 87)35 (53.8)52 (85.2)< 0.001
G3 (n = 39)30 (46.2)9 (14.8)
Tumor sizepT1 + pT2 (n = 11)7 (10.6)4 (6.6)0.312
pT3 + pT4 (n = 116)59 (89.4)57 (93.4)
Lymph node InvolvementNegative (n = 60)29 (43.9)31 (50.8)0.438
Positive (n = 67)37 (56.1)30 (49.2)
Table 2 Analysis of correlations between Insulin receptor substrate 1, Bax and Bcl-xL expressions in primary colorectal cancer
Groups of patients


IRS-1–Bax


IRS-1–Bcl-xL
nP valuernP valuer
All123< 0.0010.513a119< 0.0010.354a
Age (yr)≤ 6040< 0.0010.661a410.0010.481a
> 6081< 0.0010.424a760.0200.267a
SexMale67< 0.0010.497a630.0110.319a
Female55< 0.0010.537a550.0020.415a
LocalizationRectum54< 0.0010.460a510.0800.247a
Colon68< 0.0010.536a67< 0.0010.446a
HP–typeA101< 0.0010.535a96< 0.0010.535a
MA220.953-0.013230.841-0.044
GG284< 0.0010.523a830.0060.300a
G3380.2630.186350.4740.125
TpT1 + pT2100.4550.268110.0050.772a
pT3 + pT4113< 0.0010.529a1080.0010.302a
NpN (-)58< 0.0010.507a570.0070.351a
pN (+)65< 0.0010.493a620.0070.336a
Table 3 Analysis of correlations between Insulin receptor substrate 1 and Ki-67 expression in primary colorectal cancer
Groups of patients


IRS-1 – Ki-67
nP valuer
All1020.5890.054
Age (yr)≤ 60320.291-0.193
> 60680.1470.178
SexMale550.8930.018
Female460.5170.098
LocalizationRectum450.662-0.067
Colon560.2850.145
HP–typeA850.7510.035
MA170.239-0.302
GG2710.8450.024
G3300.7140.070
TpT1 + pT280.0430.723a
pT3 + pT4940.973-0.004
NpN (-)490.4710.105
pN (+)530.9990.000
Table 4 Analysis of correlations between Bax and Bcl-xL expression in primary colorectal cancer
Groups of patients


Bax–Bcl-xL
nP valuer
All115< 0.0010.556a
Age(yr)≤ 6039< 0.0010.575a
> 6074< 0.0010.530a
SexMale60< 0.0010.453a
Female54< 0.0010.643a
LocalizationRectum48< 0.0010.490a
Colon66< 0.0010.594a
HP–typeA93< 0.0010.546a
MA220.0130.519a
GG280< 0.0010.523a
G334< 0.0010.543a
TpT1 + pT2100.5370.222
pT3 + pT4105< 0.0010.577a
NpN (-)55< 0.0010.509a
pN (+)60< 0.0010.582a