Meta-Analysis
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastroenterol. Jul 21, 2014; 20(27): 9191-9199
Published online Jul 21, 2014. doi: 10.3748/wjg.v20.i27.9191
Table 1 Characteristics of studies included in the meta-analysis
Ref.CountryEthnicityStudy designDetected targetNo. of cases detected for Notch1No. of controls detected for Notch1No. of cases detected for Hes1No. of controls detected for Hes1No. of cases detected for Jagged1No. of controls detected for Jagged1
Gou et al[7]ChinaAsiansHCCNotch1108NC----
Huang et al[8]ChinaAsiansHCCNotch16828----
Kang et al[9]South KoreaAsiansHCCNotch1, Notch3, Jagged1, Jagged2, Hes1103NC103NC103NC
Li et al[10]ChinaAsiansHCCNotch116827----
Liu et al[11]ChinaAsiansHCCNotch1317NC----
Piazzi et al[12]ItalyCaucasiansHCCDLL1------
Sun et al[13]ChinaAsiansHCCNotch1, Notch2, Hes174107410--
Wang et al[14]ChinaAsiansHCCNotch1, Hes1, NICD72167216--
Yang et al[15]ChinaAsiansHCCNotch113527----
Yang et al[16]ChinaAsiansHCCNotch1, Jagged1, DLL16363--6363
Yeh et al[17]Taiwan, ChinaAsiansHCCNotch1, Jagged190NC--96NC
Zhang et al[18]ChinaAsiansHCCNotch1, DLL44525----
Zhang et al[19]ChinaAsiansHCCNotch15454----
Zhou et al[20]ChinaAsiansHCCJagged1, Notch160NC--6020
Ishigami et al[21]JapanAsiansHCCDLL4------
Table 2 Meta-analysis of Notch1 and gastric cancer
Stratification of gastric cancerNo. of participantsOR (95%CI)Statistical methodP valueRef.
Gender:10401.21 (0.92-1.59)Fixed0.189[8-11,15,17-20]
Male vs female
Age (yr):6071.36 (0.96-1.91)Fixed0.084[8,10,11,19]
≤ 60 vs > 60
Location:5890.62 (0.43-0.91)Fixed0.01a5[8,11,17,19,20]
Cardia vs noncardia
Tumor size:6340.68 (0.49-0.94)Fixed0.02a5[8,11,15,19,20]
≤ 5 cm vs > 5 cm
Lauren's classification:6801.45 (1.03-2.03)Fixed0.03a5[9,11,13,15,17]
Intestinal vs diffuse
Histological differentiation:12201.42 (0.85-2.37)Random0.1711[7-11,14,15,17-20]
Well/moderate vs poor/undifferentiated
Lymphovascular invasion:2580.49 (0.28-0.87)Fixed0.01a2[10,17]
Negative vs positive
T stage:4530.71 (0.24-2.09)Random0.545[7,10,14,18,20]
T1-2 vs T3-4
N stage:12201.07 (0.57-2.00)Random0.8311[7-11,14,15,17-20]
N0 vs N1-3
Distal metastasis:2850.33 (0.14-0.78)Fixed0.01a3[10,14,18]
Negative vs positive
TNM stage:5670.91 (0.53-1.57)Random0.747[8,9,14,15,17-19]
Stages I-II vs III-IV
Table 3 Meta-analysis of other components of Notch signaling pathway and gastric cancer
Stratification of gastric cancerNotch2
Notch3
Jagged1
Jagged2
DLL4
Hes1
OR (95%CI)P valueOR (95%CI)P valueOR (95%CI)P valueOR (95%CI)P valueOR (95%CI)P valueOR (95%CI)P value
Tumor tissue vs normal tissue292.00 (23.75-3589.39)< 0.01a--0.94 (0.00-254.96)0.98--3.84 (2.52-5.83)< 0.01a14.31 (4.11-49.87)< 0.01a
Gender:--1.01 (0.46-2.26)0.971.26 (0.36-4.39)0.362.90 (0.76-11.02)0.121.03 (0.57-1.86)0.931.05 (0.47-2.35)0.90
Male vs female
Age (yr):--0.75 (0.30-1.88)0.541.19 (0.48-2.94)0.700.17 (0.02-1.40)0.100.52 (0.13-2.16)0.371.13 (0.45-2.81)0.80
≤ 55 vs > 55
Location:----0.63 (0.26-1.50)0.30------
Cardia vs noncardia
Lauren's classification:0.60 (0.02-15.19)0.762.61 (1.17-5.84)0.02a2.02 (1.11-3.69)0.02a3.97 (1.17-13.46)0.03a--1.71 (0.88-3.30)0.11
Intestinal vs diffuse
Histological differentiation:--2.04 (0.89-4.67)0.092.18 (1.23-3.86)< 0.0a1.36 (0.44-4.18)0.600.89 (0.52-1.54)0.691.78 (0.95-3.34)0.07
Well/moderate vs poor/undifferentiated
T stage:--2.40 (0.73-7.92)0.150.50 (0.03-8.54)0.633.70 (1.05-13.08)0.04a (T1 vs T2-4)0.29 (0.16-0.54)< 0.01a1.72 (0.49-6.00)0.39 (T1 vs T2-4)
T1-2 vs T3-4
N stage:--1.84 (0.71-4.75)0.210.82 (0.44-1.50)0.510.91 (0.23- 3.55)0.890.12 (0.06-0.23)< 0.01a0.39 (0.04-4.38)0.45
N0 vs N1-3
Distal metastasis:--------0.55 (0.10-3.00)0.491.76 (0.36-8.51)0.48
Negative vs positive
TNM stage:--1.19 (0.54-2.63)0.670.78 (0.42-1.42)0.411.32 (0.44-3.98)0.620.15 (0.03-0.80)0.03a0.70 (0.15-3.36)0.66
Stages I-II vs III-IV